CN110571127A - Radio frequency power supply for multipole ion trap and ion guide device - Google Patents
Radio frequency power supply for multipole ion trap and ion guide device Download PDFInfo
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- CN110571127A CN110571127A CN201910947887.8A CN201910947887A CN110571127A CN 110571127 A CN110571127 A CN 110571127A CN 201910947887 A CN201910947887 A CN 201910947887A CN 110571127 A CN110571127 A CN 110571127A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J49/00—Particle spectrometers or separator tubes
- H01J49/02—Details
- H01J49/022—Circuit arrangements, e.g. for generating deviation currents or voltages ; Components associated with high voltage supply
Abstract
a radio frequency power supply for a multipole ion trap and ion guide device comprising a signal source, a power amplifier, a radio frequency resonance circuit, a monitoring circuit, a bias circuit and a load, wherein: the signal source is used for providing a radio frequency signal; the power amplifier is used for amplifying the radio-frequency signal provided by the signal source and generating a high-power signal for driving a subsequent circuit; the radio frequency resonance circuit is used for carrying out resonance amplification on the high-power signal output by the power amplifier and outputting the high-power signal to a load; the monitoring circuit is used for monitoring the signal after resonant amplification of the radio frequency resonance circuit; the bias circuit is used for applying direct-current bias voltage to the radio-frequency high voltage transmitted to the load; the load is a multipole ion trap or an ion guide. According to the radio frequency power supply provided by the invention, the radio frequency resonance circuit adopts the series resonance circuit, the radio frequency signal is directly input into the resonance circuit, the energy transmission efficiency is high, the quality factor is higher, and meanwhile, only one main circuit is provided, so that the structure is simpler.
Description
Technical Field
The invention belongs to the technical field of electronic instruments, and particularly relates to a radio frequency power supply for a multipole rod ion trap and an ion guide device.
Background
Multipole ion traps and ion guides are typically comprised of four or more electrodes, such as quadrupole ion traps, octupole ion guides, etc., as shown in figure 1, which is a schematic diagram of an example quadrupole ion trap or quadrupole ion guide rod; because the multipole rod ion trap and the ion guide device have simple structures and strong practicability, the multipole rod ion trap and the ion guide device are widely applied to modern chemical analysis instruments. The rf power supply used to drive such multipole systems needs to provide two rf high voltage outputs of the same amplitude and opposite phases. The circuit of the common radio frequency power supply mainly comprises: signal source circuit, drive circuit and most important radio frequency resonant circuit. The rf resonant circuit is mainly composed of an inductor (L) -capacitor (C) (LC for short), also called LC resonant circuit. At present, a widely used radio frequency resonant circuit adopts a step-up transformer type parallel resonant circuit, and the main structure and principle of the parallel resonant circuit are as follows: the radio frequency power is input by the primary level of the transformer and coupled to the secondary level through the magnetic core, and the coil of the secondary level is connected in parallel with the capacitor to form a parallel LC resonance circuit, so that the high-amplitude radio frequency voltage output is realized. The design of such parallel LC resonant tanks is generally limited by three aspects: firstly, the electromagnetic induction between a main coil and a secondary coil in a parallel LC resonance loop has inevitable energy loss; secondly, the loss of the transmission energy can limit the quality factor of the secondary parallel LC resonant circuit at the same time; thirdly, the step-up transformer in the parallel LC resonant circuit is relatively complex in winding manufacture, so that the circuit design of the whole radio frequency power supply becomes complex, and the miniaturization of the whole radio frequency power supply is difficult to realize.
Disclosure of Invention
Technical problem to be solved
The invention provides a radio frequency power supply for a multipole rod ion trap and an ion guide device, and aims to solve the problems that inevitable energy loss exists in a circuit of a common radio frequency power supply, the quality factor of a resonant circuit is small, the circuit design of the radio frequency power supply is complicated, and the miniaturization of the whole radio frequency power supply is difficult to realize.
(II) technical scheme
a radio frequency power supply for a multipole ion trap and ion guide device comprising a signal source 100, a power amplifier 200, a radio frequency resonance circuit 300, a monitoring circuit 400, a bias circuit 500 and a load 600, wherein:
a signal source 100 for providing a radio frequency signal with adjustable amplitude and frequency;
a power amplifier 200, the input end of which is connected to the output end of the signal source 100, for amplifying the radio frequency signal provided by the signal source 100 to generate a high power signal for driving a subsequent circuit;
The radio frequency resonance circuit 300 has an input end connected to the output end of the power amplifier 200, a first output end connected to the positive polarity of the load 600, and a second output end connected to the negative polarity of the load 600, and is configured to perform resonance amplification on the high power signal output by the power amplifier 200, generate a radio frequency signal with a higher amplitude, and output the radio frequency signal to the load 600;
The monitoring circuit 400 is connected with the first input end of the radio frequency resonance circuit 300 and the second input end of the monitoring circuit 300, is used for monitoring signals after resonance amplification of the radio frequency resonance circuit 300, can visually obtain the amplitude and frequency of radio frequency high-voltage signals transmitted to the load 600, and can monitor the capacitive matching state between a power supply and the load;
a bias circuit 500, a first input terminal of which is connected to the first output terminal of the rf resonant circuit 300 and a second input terminal of which is connected to the second output terminal of the rf resonant circuit 300, for applying a dc bias voltage to the rf high voltage transmitted to the load 600;
the load 600 is a multipole ion trap or ion guide.
the radio frequency resonance circuit 300 includes: first variable resistor 301, first inductance 3021, second inductance 3022, second variable resistor 303, and variable capacitor 304, wherein:
A first port of the first variable resistor 301 serves as an input end of the rf resonant circuit 300 and is connected to an output end of the power amplifier 200, a second port of the first variable resistor 301 is connected to a first port of a first inductor 3021, a second port of the first inductor 3021 is connected to a first port of the variable capacitor 304, a second port of the variable capacitor 304 is connected to a first port of a second inductor 3022, a second port of the second inductor 3022 is connected to a first port of the second variable resistor 303, and a second port of the second variable resistor 303 is connected to ground; a first port and a second port of the variable capacitor 304 are respectively used as a first output end and a second output end of the radio frequency resonance circuit 300;
a first inductor 3021 and a second inductor 3022 in the radio frequency resonance circuit are both formed by winding magnetic rings made of carbonyl iron powder core materials, and the first inductor 3021 and the second inductor 3022 are wound on the same magnetic ring;
the monitoring circuit 400 includes: a first monitoring circuit 401 and a second monitoring circuit 402, wherein,
A first monitoring circuit 401, an input end of which is connected to the first output end of the rf resonant circuit 300, for monitoring the rf signal output from the first output end of the rf resonant circuit 300 to the load;
Specifically, the first monitoring circuit 401 includes: a first capacitor 4011, a second capacitor 4012, and a first monitor output port 4013, wherein:
a first port of the first capacitor 4011 is used as an input port of the first monitoring circuit 401, and a second port is connected to a first port of the second capacitor 4012 and the first monitoring output port 4013; the second port of the second capacitor 4012 is connected to ground.
A second monitoring circuit 402, an input end of which is connected to the second output end of the rf resonant circuit 300, for monitoring the rf signal output from the second output end of the rf resonant circuit 300 to the load;
the second monitoring circuit 402 includes: third electric capacity 4021, fourth electric capacity 4022 and second monitoring output port 4023, wherein:
a first port of the third capacitor 4021 is an input end of the second monitoring circuit 402; a second port of the third capacitor 4021 is connected to a first port of the fourth capacitor 4022 and the second monitoring output port 4023; the second port of the fourth capacitor 4022 is connected to ground.
a bias circuit 500, a first input terminal of which is connected to the first output terminal of the rf resonant circuit 300 and the first input terminal of the monitoring circuit 400, and a second input terminal of which is connected to the second output terminal of the rf resonant circuit 300 and the second input terminal of the monitoring circuit 400, for applying a dc bias voltage to the output rf high voltage; the bias circuit 500 includes: a fifth capacitor 501, a sixth capacitor 502, a first resistor 503, a second resistor 504, a positive input end and a negative input end of a high-voltage power supply 505; wherein:
A first port of the fifth capacitor 501 is used as a first input end of the bias circuit 500, and is connected with a first output end of the rf resonant circuit 300 and an input end of the first monitoring circuit 401, and a second port of the fifth capacitor 501 is used as a second output end of the bias circuit 500, and is connected with a negative polarity end of the load 600; a second port of the sixth capacitor 502 is used as a first output terminal of the bias circuit 500, and is connected to a positive polarity terminal of the load 600 and a first port of the second resistor 504; a first port of the first resistor 503 is connected to a first output terminal of the bias circuit 500, and a second port is connected to a positive input terminal of the high voltage power supply 505; the negative input terminal of the high voltage power supply 505 is connected to the second port of the second resistor 504, and the first port of the second resistor 504 is connected to the second output terminal of the bias circuit 500.
(III) advantageous effects
the radio frequency power supply for the multipole rod ion trap and the ion guide device outputs a radio frequency signal with adjustable amplitude and frequency through a signal source, then obtains a power amplified signal through a power amplifier, and the power amplified signal realizes amplitude amplification through a series LC resonance circuit in a radio frequency resonance circuit to obtain two paths of synchronous output of radio frequency high voltage with the same amplitude and opposite phases. Because the radio frequency resonance circuit adopts the series LC resonance circuit, the radio frequency signal is directly input into the LC resonance circuit, and the energy transmission efficiency is high. The invention adopts the series LC resonance loop to realize the amplification of the radio frequency signal amplitude by directly amplifying the voltage of the resonance energy storage circuit, and has higher quality factor compared with the parallel LC resonance which realizes the amplification of the signal amplitude by amplifying the current. Meanwhile, the series LC resonance circuit is only provided with one main circuit, and the parallel LC resonance circuit is provided with a main circuit and a secondary circuit, so that the structure is simpler, and the realization of a miniaturized radio frequency power supply is more facilitated.
the radio frequency power supply for the multipole rod ion trap and the ion guide device adopts the design of the radio frequency power supply of the series LC resonance circuit, is connected in series through the capacitor and the inductor, directly inputs the radio frequency power amplified by power into the series LC resonance circuit to realize the output of high-voltage radio frequency signals, can reduce the loss of energy in the transmission process, obtains higher quality factors, simplifies the resonance circuit of the radio frequency power supply, realizes the miniaturization of the whole radio frequency power supply, and improves the use flexibility of the radio frequency power supply while ensuring the radio frequency high-voltage output performance.
drawings
Figure 1 is a schematic diagram of an example quadrupole ion trap or quadrupole ion guide rod according to an embodiment of the present invention;
Fig. 2 is a diagram of an inductor winding manner according to an embodiment of the present invention;
Figure 3 is a circuit diagram of an rf power supply for a multipole ion trap and ion guide according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to specific embodiments and the accompanying drawings.
Fig. 3 is a circuit diagram of an rf power supply for a multipole ion trap and ion guide in accordance with an embodiment of the present invention, the rf power supply comprising: signal source 100, power amplifier 200, radio frequency resonance circuit 300, monitoring circuit 400, bias circuit 500 and load 600, wherein:
a signal source 100 for providing a radio frequency signal with adjustable amplitude and frequency;
a power amplifier 200, the input end of which is connected to the output end of the signal source 100, for amplifying the radio frequency signal provided by the signal source 100 to generate a high power signal for driving a subsequent circuit;
the radio frequency resonance circuit 300 has an input end connected to the output end of the power amplifier 200, a first output end connected to the positive polarity of the load 600, and a second output end connected to the negative polarity of the load 600, and is configured to perform resonance amplification on the high power signal output by the power amplifier 200, generate a radio frequency signal with a higher amplitude, and output the radio frequency signal to the load 600;
The monitoring circuit 400 is connected with the first input end of the radio frequency resonance circuit 300 and the second input end of the monitoring circuit 300, is used for monitoring signals after resonance amplification of the radio frequency resonance circuit 300, can visually obtain the amplitude and frequency of radio frequency high-voltage signals transmitted to the load 600, and can monitor the capacitive matching state between a power supply and the load;
a bias circuit 500, a first input terminal of which is connected to the first output terminal of the rf resonant circuit 300 and a second input terminal of which is connected to the second output terminal of the rf resonant circuit 300, for applying a dc bias voltage to the rf high voltage transmitted to the load 600; and
the load 600 is a multipole ion trap or ion guide.
The specific working principle is as follows:
The signal source 100 generates a radio frequency signal with adjustable amplitude and frequency, and transmits the generated radio frequency signal to the power amplifier 200;
a power amplifier 200, an input end of which is connected to the output end of the signal source 100, for performing power amplification on the radio frequency signal, outputting a power amplification signal for driving the radio frequency resonance circuit, and then transmitting the power amplification signal to the radio frequency resonance circuit 300;
in the rf power circuit for the multipole rod ion trap and the ion guide apparatus provided in this embodiment, the rf signal source 100 is a DG811 series product directly purchased from rig brand, and can output rf signals with adjustable amplitude and frequency; the power amplifier 200 is an ATA-105 model of Aigtek brand, and can amplify the power of the radio frequency signal output from the signal source;
the input end of the rf resonant circuit 300 is connected to the output end of the power amplifier 200, the first output end is connected to the positive polarity of the load 600, the second output end is connected to the negative polarity of the load 600, and the rf resonant circuit amplifies the power amplified signal output by the power amplifier 200 to output to the load 600;
specifically, the radio frequency resonance circuit 300 includes: first variable resistor 301, first inductor 3021, second variable resistor 303, second inductor 3022, and variable capacitor 304 capacitance, wherein:
a first port of the first variable resistor 301 serves as an input end of the rf resonant circuit 300 and is connected to an output end of the power amplifier 200, a second port of the first variable resistor 301 is connected to a first port of a first inductor 3021, a second port of the first inductor 3021 is connected to a first port of the variable capacitor 304, a second port of the variable capacitor 304 is connected to a first port of a second inductor 3022, a second port of the second inductor 3022 is connected to a first port of the second variable resistor 303, and a second port of the second variable resistor 303 is connected to ground; a first port and a second port of the variable capacitor 304 are respectively used as a first output end and a second output end of the radio frequency resonance circuit 300;
the first inductor 3021 and the second inductor 3022 in the rf resonant circuit are both formed by winding magnetic rings made of carbonyl iron powder core material, and the first inductor 3021 and the second inductor 3022 are wound on the same magnetic ring, and the inductance thereof can be controlled by changing the number of winding turns, and fig. 2 is a diagram illustrating an example of the winding manner of the inductor according to the present invention. Compared with the general step-up transformer type parallel resonance mode, for example, the step-up transformer wound by the magnetic ring is widely adopted at present, in order to ensure that the primary and secondary sides have higher quality factor and inductance, special attention needs to be paid to the winding mode, and the primary and secondary sides are preferably wound on the same side of the magnetic ring to prevent magnetic leakage or leakage inductance, namely, the loss of energy in the induction transmission process is reduced, so that many places need to be paid attention to when manufacturing the step-up transformer; although the inductor in the present embodiment is also formed by winding on the magnetic ring, since the present embodiment is a series resonance mode of the inductor and the load, there is no concern about energy loss due to magnetic leakage, and therefore, the winding mode of the coil is flexible; the booster transformer type parallel resonance mode is to amplify the induced current to realize final voltage amplification, and the series resonance mode is to amplify the direct voltage, so that the booster transformer type parallel resonance mode has a more direct effect and has a higher quality factor; similarly, the simplicity of the inductor of the series resonant circuit in manufacturing greatly simplifies the complexity of the radio frequency power supply circuit, so that the radio frequency power supply becomes simple, compact and small in structure, and the flexibility of the use of the radio frequency power supply is improved.
in the rf resonant circuit 300, the main components are the first inductor 3021 and the second inductor 3022, which are formed by winding the same carbonyl iron powder core magnetic ring, so that the two inductors are coupled to each other, and the specific position on the magnetic ring does not have a strict requirement, and only the inductance values of the two wound inductors need to be the same; when a power-amplified radio-frequency signal is output from the power amplifier 200, it passes through the first variable resistor 301, the first inductor 3021, the variable capacitor 304, the second inductor 3022, and the second variable resistor 303, and then is grounded to form a series circuit;
in the rf resonant circuit 300, a series LC loop is formed between the first variable resistor 301, the first inductor 3021 and the variable capacitor 304 as a first output terminal of the rf resonant circuit 300; another series LC loop is formed between the second variable resistor 303, the second inductor 3022 and the variable capacitor 304 as a second output terminal of the rf resonant circuit 300; when the frequency of an input radio frequency signal is adjusted, a specific frequency can be found, so that the two series LC circuits reach a resonance state, and the phase of the signal can be influenced due to the influence of capacitance on a time constant, and finally, resonance amplified radio frequency signals with equal amplitude, opposite phases and the same frequency can be obtained at a first output end and a second output end of the radio frequency resonance circuit 300; the first variable resistor 301 and the second variable resistor 303 in the rf resonant circuit 300 are used to adjust the quality factors of two LC circuits connected in series, so that two output terminals of the rf resonant circuit 300 are balanced, and the variable capacitor 304 is used to adjust the capacitance value of the LC circuit, so that the rf resonant circuit 300 reaches a resonance condition;
the monitoring circuit 400 has a first input end connected to the first output end of the rf resonant circuit 300 and a second input end connected to the second output end of the rf resonant circuit 300, and is mainly used to monitor a signal after resonant amplification of the signal input to the load 600 by the rf resonant circuit 300, and by using the monitoring signal, the amplitude and frequency of the rf high-voltage signal transmitted to the load 600 can be intuitively obtained, and meanwhile, the capacitive matching state between the power supply and the load can be monitored.
Specifically, the monitoring circuit 400 includes a first monitoring circuit 401 and a second monitoring circuit 402, wherein:
The first monitoring circuit 401 includes: first capacitor 4011, second capacitor 4012, and first monitor output port 4013:
a first port of the first capacitor 4011 is used as an input port of the first monitoring circuit 401, and is connected to a first output end of the radio frequency resonance circuit 300; the second port is connected with the first port of the second capacitor 4012 and the first monitor output port 4013; the second port of the second capacitor 4012 is connected to ground.
the second monitoring circuit 402 includes: a third capacitor 4021, a fourth capacitor 4022, and a second monitoring output port 4023; wherein:
A first port of the third capacitor 4021 is an input port of the second monitoring circuit 402 and is connected to a second output terminal of the radio frequency resonance circuit 300; a second port of the third capacitor 4021 is connected to a first port of the fourth capacitor 4022 and the second monitoring output port 4023; a second port of the fourth capacitor 4022 is connected to ground;
the monitoring circuit 400 includes a first monitoring circuit 401 and a second monitoring circuit 402, wherein the first monitoring circuit 401 is connected to the first output terminal of the rf resonant circuit 300, and is configured to monitor a waveform output from the first output terminal of the rf resonant circuit 300 to the load 600; the monitoring circuit 402 is connected to the second output terminal of the rf resonant circuit 300, and is configured to monitor a waveform output from the second output terminal of the rf resonant circuit 300 to the load 600; if the waveform amplitudes at the two ends are not consistent, the amplitudes of the signals output to the two ends of the load 600 can be consistent by adjusting the frequencies of the first variable resistor 301, the second variable resistor 303, the variable capacitor 304 and the signals in the radio frequency resonance circuit 300;
the monitoring circuit 400 attenuates the high-amplitude rf signal output to the load 600, and then outputs a low-amplitude signal for monitoring; the capacitance values of the first capacitor 4011 in the first monitoring circuit 401 and the third capacitor 4021 in the second monitoring circuit 402 are equal, the capacitance values of the second capacitor 4012 in the first monitoring circuit 401 and the fourth capacitor 4022 in the second monitoring circuit 402 are equal, the capacitance values of the second capacitor 4012 and the fourth capacitor 4022 are generally dozens of times of the capacitance values of the first capacitor 4011 and the third capacitor 4021, signals at two ends of the second capacitor 4012 and the fourth capacitor 4022 are selected to be monitored, and the signals are signals input to the load 600 and attenuated by dozens of times.
The bias circuit 500, the first input terminal of which is connected to the first output terminal of the rf resonant circuit 300 and the first input terminal of the monitoring circuit 400, and the second input terminal of which is connected to the second output terminal of the rf resonant circuit 300 and the second input terminal of the monitoring circuit 400, is mainly used for applying a dc bias voltage to the rf high voltage transmitted to the load 600, and the bias voltage can be adjusted according to the requirement of the load 600.
The bias circuit 500 includes: a fifth capacitor 501, a sixth capacitor 502, a first resistor 503, a second resistor 504 and a high voltage power supply 505.
a first port of the fifth capacitor 501 is used as a first input end of the bias circuit 500, and is connected with a first output end of the radio frequency resonance circuit 300 and an input end of the first monitoring circuit 401; a second port of the fifth capacitor 501 is used as a first output end of the bias circuit 500 and is connected with a positive polarity end of the load 600; a first port of the sixth capacitor 502, which is used as a second input terminal of the bias circuit 500, is connected to a second output terminal of the rf resonant circuit 300 and a second input terminal of the monitoring circuit 402, which is a second input terminal of the bias circuit 500; a second port of the sixth capacitor 502 is used as a second output end of the bias circuit 500, and is connected to the negative polarity end of the load 600 and the first port of the second resistor 504; the second port of the second resistor 504 is connected with the negative terminal of the high-voltage power supply 505; a first port of the first resistor 503 is connected to a first output terminal of the bias circuit 500, and a second port is connected to a positive input terminal of the high voltage power supply 505; the negative input end of the high-voltage power supply 505 is connected with the second port of the second resistor 504, and the second port of the first resistor 503 is connected with the positive-polarity end of the high-voltage power supply 505; the high voltage power source 505 has a positive polarity terminal and a negative polarity terminal.
the bias circuit 500 is generally used to apply a dc bias to the load 600, so that the applied dc bias must be isolated from affecting the rf signal output from the rf resonant circuit 300; the fifth capacitor 501 and the sixth capacitor 502 in the bias circuit 500 have a dc blocking function, and generally, these two capacitors will be relatively large, at least it is ensured that the rf signal output from the rf resonant circuit 300 to the load 600 will not be affected, and in order to ensure the balance of the output circuit, the capacitance values of the fifth capacitor 501 and the sixth capacitor 502 are equal; since the bias voltage is generally a dc high voltage, the first resistor 503 and the second resistor 504 in the bias circuit 500 function as a rectifying and protecting circuit, and similarly, for the balance of the output circuit, the resistances of the first resistor 503 and the second resistor 504 are the same;
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. a radio frequency power supply for a multipole ion trap and ion guide device, the power supply comprising a signal source (100), a power amplifier (200), a radio frequency resonance circuit (300), a monitoring circuit (400), a bias circuit (500) and a load (600), wherein:
A signal source (100) for providing a radio frequency signal of adjustable amplitude and frequency;
The input end of the power amplifier (200) is connected with the output end of the signal source (100) and is used for amplifying the radio-frequency signal provided by the signal source (100) and generating a high-power signal for driving a subsequent circuit;
the radio frequency resonance circuit (300) has an input end connected with the output end of the power amplifier (200), a first output end connected with the positive polarity of the load (600), and a second output end connected with the negative polarity of the load (600), and is used for performing resonance amplification on a high-power signal output by the power amplifier (200) to generate a radio frequency signal with a higher amplitude and outputting the radio frequency signal to the load (600);
The monitoring circuit (400) is connected with a first input end of the radio frequency resonance circuit (300) and a second input end of the monitoring circuit (400) is connected with a second output end of the radio frequency resonance circuit (300) and used for monitoring signals after resonance amplification of the radio frequency resonance circuit (300), so that the amplitude and the frequency of radio frequency high-voltage signals transmitted to the load (600) can be intuitively obtained, and meanwhile, the capacitive matching state between a power supply and the load can be monitored;
the bias circuit (500), the first input end is connected with the first output end of the radio frequency resonance circuit (300), the second input end is connected with the second output end of the radio frequency resonance circuit (300), used for applying the direct current bias voltage to the radio frequency high voltage transmitted to the load (600);
the load (600) is a multipole ion trap or ion guide.
2. the radio frequency power supply for a multipole ion trap and ion guide device according to claim 1, wherein the radio frequency resonance circuit (300) comprises a first variable resistor (301), a first inductance (3021), a second inductance (3022), a second variable resistor (303) and a variable capacitance (304), wherein:
a first series resonant circuit loop is formed among the first variable resistor (301), the first inductor (3021) and the variable capacitor (304); a second series resonant circuit loop is formed among the second variable resistor (303), the second inductor (3022) and the variable capacitor (304);
a first port of the first variable resistor (301) is used as an input end of the radio frequency resonance circuit (300) and is connected with an output end of the power amplifier (200), and a second port of the first variable resistor (301) is connected with a first port of the first inductor (3021);
A first port of the variable capacitor (304) is used as a first output port of the radio frequency resonance circuit (300), and a second port of the variable capacitor (304) is used as a second output port of the radio frequency resonance circuit (300);
the second port of the first inductor (3021) is connected with the first port of the variable capacitor (304), the second port of the variable capacitor (304) is connected with the first port of the second inductor (3022), the second port of the second inductor (3022) is connected with the first port of the second variable resistor (303), and the second port of the second variable resistor (303) is connected with the ground;
The first variable resistor (301) and the second variable resistor (303) adjust the quality factors of the first series resonant circuit loop and the second series resonant circuit loop, so that two output ends of the radio frequency resonant circuit (300) are balanced;
The variable capacitance (304) adjusts the capacitance of the first and second series resonant circuit loops such that the radio frequency resonant circuit (300) reaches a resonant condition.
3. The rf power supply of claim 2, wherein the first inductor (3021) and the second inductor (3022) are wound around a magnetic ring made of carbonyl iron powder core material, and the first inductor (3021) and the second inductor (3022) are wound around the same magnetic ring.
4. The radio frequency power supply for a multipole rod ion trap and ion guide device according to claim 3, wherein the inductance values of the first (3021) and second (3022) inductors are the same.
5. the radio frequency power supply for a multipole ion trap and ion guide device according to claim 1, wherein the monitoring circuit (400) comprises a first monitoring circuit (401) and a second monitoring circuit (402), wherein,
The input end of the first monitoring circuit (401) is connected with the first output end of the radio frequency resonance circuit (300) and is used for monitoring the radio frequency signal output to the load from the first output end of the radio frequency resonance circuit (300);
and the input end of the second monitoring circuit (402) is connected with the second output end of the radio frequency resonance circuit (300) and is used for monitoring the radio frequency signal output to the load from the second output end of the radio frequency resonance circuit (300).
6. The radio frequency power supply for multipole rod ion trap and ion guide device of claim 1, wherein the first monitoring circuitry (401) comprises a first capacitor (4011), a second capacitor 4012 and a first monitoring output port (4013), wherein:
a first port of the first capacitor (4011) is used as an input port of the first monitoring circuit (401), and a second port of the first capacitor (4011) is connected with a first port of the second capacitor (4012) and a first monitoring output port (4013); the second port of the second capacitor (4012) is connected to ground.
and the input end of the second monitoring circuit (402) is connected with the second output end of the radio frequency resonance circuit (300) and is used for monitoring the radio frequency signal output to the load from the second output end of the radio frequency resonance circuit (300).
7. The radio frequency power supply for a multipole ion trap and ion guide device according to claim 6 wherein the second monitoring circuit (402) comprises a third capacitor (4021), a fourth capacitor (4022) and a second monitoring output port (4023) wherein:
a first port of the third capacitor (4021) is an input end of the second monitoring circuit (402), and a second port of the third capacitor (4021) is connected with a first port of the fourth capacitor (4022) and the second monitoring output port (4023); the second port of the fourth capacitor (4022) is connected to ground.
8. The radio frequency power supply for a multipole ion trap and ion guide device according to claim 7, wherein the capacitance of the monitoring circuit (400), the first capacitor (4011) in the first monitoring circuit (401) and the third capacitor 4021 in the second monitoring circuit (402) are equal; the capacitance values of a second capacitor (4012) in the first monitoring circuit (401) and a fourth capacitor (4022) in the second monitoring circuit (402) are equal; the capacitance values of the second capacitor (4012) and the fourth capacitor (4022) are 10 to 100 times that of the first capacitor (4011) and the third capacitor (4021).
9. The radio frequency power supply for a multipole ion trap and ion guide device according to claim 1, wherein the bias circuit (500) comprises a fifth capacitor (501), a sixth capacitor (502), a first resistor (503), a second resistor (504), a high voltage power supply (505), wherein:
A first port of a fifth capacitor (501) is used as a first input end of the bias circuit (500) and is connected with a first output end of the radio frequency resonance circuit (300) and an input end of the first monitoring circuit (401), and a second port of the fifth capacitor (501) is used as a second output end of the bias circuit (500) and is connected with a negative polarity end of the load (600);
a second port of the sixth capacitor (502) is used as a second output end of the bias circuit (500) and is connected with a positive polarity end of the load (600) and a first port of the second resistor (504);
a first port of the first resistor (503) is connected with a first output end of the bias circuit (500), and a second port is connected with a positive input end of the high-voltage power supply (505);
the negative input end of the high-voltage power supply (505) is connected with the second port of the second resistor (504), and the first port of the second resistor (504) is connected with the second output end of the bias circuit (500).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910947887.8A CN110571127A (en) | 2019-09-30 | 2019-09-30 | Radio frequency power supply for multipole ion trap and ion guide device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910947887.8A CN110571127A (en) | 2019-09-30 | 2019-09-30 | Radio frequency power supply for multipole ion trap and ion guide device |
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| CN110571127A true CN110571127A (en) | 2019-12-13 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112491416A (en) * | 2020-11-27 | 2021-03-12 | 西安空间无线电技术研究所 | Real-time monitoring and feedback system for ion trap radio-frequency potential of ion microwave frequency standard |
| CN113725062A (en) * | 2021-09-07 | 2021-11-30 | 国开启科量子技术(北京)有限公司 | Ion trap radio frequency device |
-
2019
- 2019-09-30 CN CN201910947887.8A patent/CN110571127A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112491416A (en) * | 2020-11-27 | 2021-03-12 | 西安空间无线电技术研究所 | Real-time monitoring and feedback system for ion trap radio-frequency potential of ion microwave frequency standard |
| CN112491416B (en) * | 2020-11-27 | 2024-03-15 | 西安空间无线电技术研究所 | Real-time monitoring and feedback system for RF potential of ion trap for ion microwave frequency standard |
| CN113725062A (en) * | 2021-09-07 | 2021-11-30 | 国开启科量子技术(北京)有限公司 | Ion trap radio frequency device |
| CN113725062B (en) * | 2021-09-07 | 2023-07-07 | 国开启科量子技术(北京)有限公司 | Ion trap radio frequency device |
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