CN205142152U - High -power band pass filter - Google Patents
High -power band pass filter Download PDFInfo
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- CN205142152U CN205142152U CN201520949913.8U CN201520949913U CN205142152U CN 205142152 U CN205142152 U CN 205142152U CN 201520949913 U CN201520949913 U CN 201520949913U CN 205142152 U CN205142152 U CN 205142152U
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Abstract
The utility model provides a high -power band pass filter. Traditional band pass filter irrigates this circuit by the bart usually, adopts 600F (0805 encapsulation) electric capacity preparation to form, and it has the stop band and restraines poor, bulky, applied frequency range low grade shortcoming, is burnt out by high -power signal very easily. The utility model provides an adopt 100B encapsulation electric capacity, the high -power band pass filter of chebyshev circuit, its characterized in that: including input terminal, third inductance, a high pass circuit, low pass circuit, the 2nd high pass circuit, fourth inductance and output terminal, input terminal, third inductance, a high pass circuit, low pass circuit, the 2nd high pass circuit, fourth inductance and output terminal establish ties in proper order. The utility model discloses simple structure, reasonable in design, the performance is high, and the reliability is high, and the processing degree of difficulty is little, and is with low costs big with the power capacity.
Description
Technical field
The utility model relates to a kind of high-power band pass filter, belongs to military communication technical field, relates to wavelength band at 400MHz ~ 3000MHz.
Background technology
Band pass filter is microwave power filtration module conventional in wireless receiving system, is generally used in many application scenarios such as the active/passive radar of military communication, prevents receiver and other communication equipments from mutually disturbing.Along with the fast development of modern wireless telecommunication system and electronic equipment, communicate crowded as intensive highway between each frequency range, one of high-power filtration module key becoming wireless receiving system of research high-performance, volume miniaturization.
Traditional band pass filter is usually by Butterworth circuit, and adopt 600F (0805 encapsulation) electric capacity to be made, it has the shortcomings such as stopband suppression is poor, volume large, applying frequency scope is low, is easy to be burnt by high-power signal; Along with the requirement of modern wireless telecommunication system is more and more higher, the requirement of receiver Chinese People's Anti-Japanese Military and Political College signal being burnt to ability constantly promotes, simultaneously improving constantly along with wireless telecommunication system frequency, and development high-frequency high-power band pass filter is extremely urgent.
Utility model content
The purpose of this utility model is to overcome above shortcomings in prior art, and provides a kind of reasonable in design, and performance is high, and reliability is high, and difficulty of processing is little, the high-power band pass filter that cost is low and power capacity is large.
The technical scheme in the invention for solving the above technical problem is: this high-power band pass filter adopts 100B to encapsulate electric capacity and chebyshev function circuit, it is characterized in that: comprise input terminal, the 3rd inductance, the first high pass circuit, low pass circuit, the second high pass circuit, the 4th inductance and lead-out terminal, described input terminal, the 3rd inductance, the first high pass circuit, low pass circuit, the second high pass circuit, the 4th inductance and lead-out terminal are connected successively.By the setting of the first high pass circuit, low pass circuit, the second high pass circuit, can bear high-power, ensure the reliability of product, above-mentioned filter circuit can be the Out-of-band rejection of 1900MHz and above out of band signal realization >=15dB to frequency, can also the various out of band signal of filtering and the various harmonic component such as second harmonic, triple-frequency harmonics that produced by inband signaling, ensure that the pure of signal.
First high pass circuit described in the utility model comprises the first electric capacity, the second electric capacity, the 3rd electric capacity, the 4th electric capacity and the first inductance, first electric capacity and the second Capacitance parallel connection arrange formation parallel-connection structure, 3rd electric capacity, the 4th Capacitance parallel connection arrange formation parallel-connection structure, first inductance one end is connected between above-mentioned two groups of parallel-connection structures, and other end ground connection.
Low pass circuit described in the utility model comprises the 5th electric capacity, the 6th electric capacity, the 7th electric capacity, the 8th electric capacity and the second inductance, the first end of the 5th electric capacity is connected with the second inductance, 6th electric capacity first end is connected with the second inductance, second end of the 5th electric capacity is connected with the second end of the 6th electric capacity and ground connection, the first end of the 7th electric capacity is connected with the second inductance, 8th electric capacity first end is connected with the second inductance, and the second end of the 7th electric capacity is connected with the second end of the 8th electric capacity and ground connection.
First high pass circuit described in the utility model is identical with the second high pass circuit structure.
The utility model compared with prior art, have the following advantages and effect: structure is simple, reasonable in design, by the setting of the first high pass circuit, low pass circuit, the second high pass circuit, can bear high-power, ensure the reliability of product, above-mentioned filter circuit can be the Out-of-band rejection of 1900MHz and above out of band signal realization >=15dB to frequency, can also the various out of band signal of filtering and the various harmonic component such as second harmonic, triple-frequency harmonics that produced by inband signaling, ensure that the pure of signal.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structured flowchart of the high-power band pass filter in the utility model embodiment.
Fig. 2 is the schematic diagram of high-power band pass filter.
Embodiment
Below in conjunction with accompanying drawing, also by embodiment, the utility model is described in further detail, and following examples are that the utility model is not limited to following examples to explanation of the present utility model.
Embodiment 1.
See Fig. 1 to Fig. 2, the high-power band pass filter of the present embodiment comprises input terminal in, the 3rd inductance L 3, first high pass circuit 201, low pass circuit 202, second high pass circuit 201, the 4th inductance L 4 and lead-out terminal out.Wherein, the first high pass circuit 201 is identical with the second high pass circuit 201 structure.
Input terminal in the present embodiment, the 3rd inductance L 3, first high pass circuit 201, low pass circuit 202, second high pass circuit 201, the 4th inductance L 4 and lead-out terminal out connect successively.By the setting of the first high pass circuit 201, low pass circuit 202, second high pass circuit 201, can bear high-power, ensure the reliability of product, above-mentioned filter circuit can be the Out-of-band rejection of 1900MHz and above out of band signal realization >=15dB to frequency, can also the various out of band signal of filtering and the various harmonic component such as second harmonic, triple-frequency harmonics that produced by inband signaling, ensure that the pure of signal.
The first high pass circuit 201 in the present embodiment comprises the first electric capacity C1, the second electric capacity C3, the 3rd electric capacity C3, the 4th electric capacity C4 and the first inductance L 1, first electric capacity C1 and the second electric capacity C3 is arranged in parallel formation parallel-connection structure, 3rd electric capacity C3, the 4th electric capacity C4 are arranged in parallel formation parallel-connection structure, first inductance L 1 one end is connected between above-mentioned two groups of parallel-connection structures, and other end ground connection.
Low pass circuit 202 in the present embodiment comprises the 5th electric capacity C5, the 6th electric capacity C6, the 7th electric capacity C7, the 8th electric capacity C8 and the second inductance L 2, the first end of the 5th electric capacity C5 is connected with the second inductance L 2,6th electric capacity C6 first end is connected with the second inductance L 2, second end of the 5th electric capacity C5 is connected with second end of the 6th electric capacity C6 and ground connection, the first end of the 7th electric capacity C7 is connected with the second inductance L 2,8th electric capacity C8 first end is connected with the second inductance L 2, and second end of the 7th electric capacity C7 is connected with second end of the 8th electric capacity C8 and ground connection.
In the present embodiment, 8 electric capacity C1, electric C2, electric C3, electric C4 are the high power requirements meeting product, have employed the form that 100B series A TC electric capacity two is in parallel, namely electric C1, electric C2 are in parallel, electricity C3, electric C4 parallel connection are welded on printed board pad cross road, L1 inductance adopts the coiling of Ф 1.0mm enamelled wire, is welded between printed board pad and cavity ground connection.
Electric capacity C5, electric capacity C6 and inductance L 2 constitute 13 rank low pass filter, 4 electric capacity C5, electric capacity C6, electric capacity C7, electric capacity C8 are the high power requirements meeting product, have employed the form that 100B series A TC electric capacity two is in parallel, L2 inductance adopts the coiling of Ф 1.0mm enamelled wire, is welded on two printed board pad cross roads.
High-power band pass filter in the present embodiment meets the requirement of modern wireless telecommunication system module high-performance, high reliability, has the advantage that difficulty of processing is little, cost is low, lightweight and power capacity is large; By the debugging to each filter, the phase equalization of same batch of product can be ensured.Can also by changing the design frequency of filter circuit and electric capacity quantity to be applied to receiving system application requirement when higher frequency and more high-power use occasion.
The first high pass circuit 201 in the present embodiment and the second high pass circuit 201 are Chebyshev's high pass circuit, and low pass circuit 202 is Chebyshev's low pass circuit.
Above content described in this specification is only to the explanation of the utility model example.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment; only otherwise depart from the content of the utility model specification or surmount this scope as defined in the claims, protection range of the present utility model all should be belonged to.
Claims (4)
1. a high-power band pass filter, it is characterized in that: comprise input terminal, the 3rd inductance, the first high pass circuit, low pass circuit, the second high pass circuit, the 4th inductance and lead-out terminal, described input terminal, the 3rd inductance, the first high pass circuit, low pass circuit, the second high pass circuit, the 4th inductance and lead-out terminal are connected successively.
2. high-power band pass filter according to claim 1, it is characterized in that: described first high pass circuit comprises the first electric capacity, the second electric capacity, the 3rd electric capacity, the 4th electric capacity and the first inductance, first electric capacity and the second Capacitance parallel connection arrange formation parallel-connection structure, 3rd electric capacity, the 4th Capacitance parallel connection arrange formation parallel-connection structure, first inductance one end is connected between above-mentioned two groups of parallel-connection structures, and other end ground connection.
3. high-power band pass filter according to claim 1 and 2, it is characterized in that: described low pass circuit comprises the 5th electric capacity, the 6th electric capacity, the 7th electric capacity, the 8th electric capacity and the second inductance, the first end of the 5th electric capacity is connected with the second inductance, 6th electric capacity first end is connected with the second inductance, second end of the 5th electric capacity is connected with the second end of the 6th electric capacity and ground connection, the first end of the 7th electric capacity is connected with the second inductance, 8th electric capacity first end is connected with the second inductance, and the second end of the 7th electric capacity is connected with the second end of the 8th electric capacity and ground connection.
4. high-power band pass filter according to claim 1 and 2, is characterized in that: described first high pass circuit is identical with the second high pass circuit structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520949913.8U CN205142152U (en) | 2015-11-24 | 2015-11-24 | High -power band pass filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520949913.8U CN205142152U (en) | 2015-11-24 | 2015-11-24 | High -power band pass filter |
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| Publication Number | Publication Date |
|---|---|
| CN205142152U true CN205142152U (en) | 2016-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520949913.8U Active CN205142152U (en) | 2015-11-24 | 2015-11-24 | High -power band pass filter |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105490657A (en) * | 2015-11-24 | 2016-04-13 | 浙江嘉科电子有限公司 | A high-power band-pass filter |
| CN108964626A (en) * | 2018-07-06 | 2018-12-07 | 成都仕芯半导体有限公司 | Analog bandpass filter |
| CN112702059A (en) * | 2020-12-11 | 2021-04-23 | 兰州空间技术物理研究所 | Frequency synthesizer for cesium atomic clock |
-
2015
- 2015-11-24 CN CN201520949913.8U patent/CN205142152U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105490657A (en) * | 2015-11-24 | 2016-04-13 | 浙江嘉科电子有限公司 | A high-power band-pass filter |
| CN108964626A (en) * | 2018-07-06 | 2018-12-07 | 成都仕芯半导体有限公司 | Analog bandpass filter |
| CN108964626B (en) * | 2018-07-06 | 2022-04-19 | 成都仕芯半导体有限公司 | Analog band-pass filter |
| CN112702059A (en) * | 2020-12-11 | 2021-04-23 | 兰州空间技术物理研究所 | Frequency synthesizer for cesium atomic clock |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: Xiuzhou District of Jiaxing City, Zhejiang Province, 314001 high street Taoyuan Road No. 587 Building No. 1 Patentee after: Jiake Electronics Co., Ltd., Zhejiang Address before: 314001 building 16, No. 1369 Chengnan Road, Zhejiang, Jiaxing 303 Patentee before: Jiake Electronics Co., Ltd., Zhejiang |