CN101794926A - Band-pass filter based on pentagon closed loop resonator - Google Patents
Band-pass filter based on pentagon closed loop resonator Download PDFInfo
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- CN101794926A CN101794926A CN201010133507A CN201010133507A CN101794926A CN 101794926 A CN101794926 A CN 101794926A CN 201010133507 A CN201010133507 A CN 201010133507A CN 201010133507 A CN201010133507 A CN 201010133507A CN 101794926 A CN101794926 A CN 101794926A
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Abstract
The invention relates to a miniaturization band-pass filter based on pentagon closed loop resonator, belonging to the microwave communication equipment technical field. The band-pass filter comprises a pentagon resonator, an embedded pentagon full-wavelength resonator and a feeder line; wherein the embedded resonator adopts a slotted pentagon closed loop resonator, multi-layer nesting coupling is adopted, and meanwhile the feeder line with inductive coupling is loaded. The invention adopts the feeder line in inductive magnetic coupling structure without adding circuit area and processing complexity, coupling with the resonator is improved and loss is reduced while volume of circuit is reduced; the slotted pentagon resonator is adopted, so that extra transmission zero is introduced into passband edge of the filter and stop band rejection capability is improved. High performance miniaturization microwave filter is realized on a limited medium substrate. Multi-layer nesting coupling increases surface area, thus the center frequency of the filter shifts down. The invention has compact design, is easy to integrate and has convenient use in dense integrated circuit.
Description
Technical field
The invention belongs to the microwave telecommunication devices technical field, particularly a kind of microwave band-pass filter.
The present invention relates to a kind of miniaturization band pass filter, particularly relate to a kind of microwave band-pass filter that adopts novel fluting slit pentagon resonator and have the feeder line composition of inductive magnetic coupled structure based on pentagon closed loop resonator.
Background technology
Microstrip filter is based on Theory of Electromagnetic Field, by perception, the capacitive of microstrip line itself and a kind of filter that intercouples and realize, because its volume is little, reliability is high, conformity of production good, need not debug, be easy to advantages such as integrated, in microwave hybrid circuit, be extensive use of.Reduce the volume of circuit and improve the important topic that circuit performance is modern microwave filter design.Usually, the micro-strip resonantor structure is numerous, says from universal significance to be broadly divided into open loop type, closed loop and chip three major types.And, not only possess the traditional square ring resonator and the premium properties of annulus resonator based on the filter of pentagon resonator structure, also represented some new characteristics simultaneously.This pentagon resonator can form the bimodulus resonant element, makes same order wavenumber filter resonant element number reduce by half.The pentagon resonator has the advantage of slice structure simultaneously, and it has littler loss and bigger power capacity to compare open loop, closed loop resonant element.In order not increase the progression of filter, the another kind of method that improves circuit characteristic is to introduce cross coupling between non-conterminous resonator, in the stopband generation transmission zero of filter.Therefore cross-linked introducing need recomputate the coupling between resonator to the band external characteristic bigger influence being arranged all in the filter band, has increased the difficulty of circuit design.
Accompanying drawing 1 is depicted as traditional pentagon resonator, because its distinctive shape, this resonator has the bimodulus effect.Bimodulus resonance effect because of dual-mode resonator has reduced the number of resonator, thereby makes processing technology simple, but its transmission characteristic and not really desirable.
Summary of the invention
The objective of the invention is to propose the novel fluting slit pentagon resonator that a kind of employing has the feeder line of inductive magnetic coupled structure, and design microwave band-pass filter thus.The microstrip filter of gained is not only simple in structure, and has adjustable transmission zero and the good outer suppression characteristic of band.
The present invention is achieved by the following technical solutions.
A kind of pentagon band pass filter, comprise outer pentagon resonator, the long resonator of embedded pentagon all-wave, feeder line, it is characterized in that: embedded resonator adopts the pentagon closed loop resonator of fluting, and adopts the multilayer nest coupling, loads simultaneously to have inductive coupled feeder line.
Multilayer nest of the present invention coupling can be following structure: comprise the pentagon closed loop resonator of two-layer fluting, connected by linking arm between two-layer that an embedded again pentagon patch resonator is connected with above-mentioned pentagon closed loop resonator by linking arm.
The present invention is not increasing under circuit area and the processed complex degree prerequisite, adopts the feeder line of this inductive magnetic coupled structure, when reducing the circuit volume, has increased and the resonator coupling, has reduced loss; Adopt fluting slit pentagon resonator, make and introduced extra transmission zero, improved inhibition ability stopband in the passband edge of filter.On limited medium substrate, realize the high miniaturization microwave filter of performance.The multilayer nest coupling increases surface area, makes the centre frequency of filter move down here.The present invention is compact to design, be easy to integrated, easy to use in intensive integrated circuits.This microstrip filter has potential application prospect and using value in microwave circuit and mobile communication Circuits System.
Description of drawings
Fig. 1 loads the structural representation of fluting slit pentagon resonator.；
Fig. 2 is a structural representation of the present invention.Wherein 1 is peripheral pentagon resonator, and 2 is the base paster, and 3 is the long resonator of embedded pentagon all-wave, and 4 is feeder line, and 5 is linking arm, and 6 is the pentagon patch resonator, and 7 are feeder duct, and 8 is the embedded pentagon resonator of sublevel, and 9 is embedded arm.
Embodiment
The present invention will be in conjunction with the accompanying drawings, is described further by following examples.
Embodiment.
Accompanying drawing 2 is a specific embodiment of the present invention.
Present embodiment is made up of peripheral pentagon resonator 1, base paster 2, the long resonator 3 of embedded pentagon all-wave, feeder line 4, linking arm 5, pentagon patch resonator 6, feeder duct 7, the embedded pentagon resonator 8 of sublevel and embedded arm 9.Peripheral pentagon resonator 1, the long resonator 3 of embedded pentagon all-wave, the embedded pentagon resonator 8 of sublevel, pentagon patch resonator 6 are embedded successively; The long resonator 3 of embedded pentagon all-wave, the embedded pentagon resonator 8 of sublevel connect by linking arm 5, and pentagon patch resonator 6 is connected with above-mentioned pentagon closed loop resonator by linking arm.
In the present embodiment, peripheral pentagon resonator 1, its width are 0.24mm, and the length of side is 9.4mm; Base paster 2, its width are 1.9mm, and length is 2.8mm; The long resonator 3 of embedded pentagon all-wave, its length of side is 0.6mm for the 6.3mm width; Feeder line 4, its length are 7mm, and width is 1.5mm; Linking arm 5, its width are 0.6mm, and length (from pentagon resonator summit to its edge) is 3.4mm; Pentagon patch resonator 6, its length of side are 2.4mm; Feeder duct 7, its length are 4.8mm, and width is 1.3mm; The long resonator 8 of the embedded pentagon all-wave of sublevel, its length of side is 4.5mm, width is 0.6mm; Embedded arm 9, its width are 0.8mm, and length (from the summit of pentagon patch resonator to its edge) is 1.8mm.
The feeder line width is 1.5mm.
Claims (2)
1. miniaturization band pass filter based on pentagon closed loop resonator, comprise outer pentagon resonator, the long resonator of embedded pentagon all-wave, feeder line, it is characterized in that: embedded resonator adopts the pentagon closed loop resonator of fluting, and adopt the multilayer nest coupling, loading simultaneously has inductive coupled feeder line.
2. described band pass filter according to claim 1, described multilayer nest is coupled as the pentagon closed loop resonator of two-layer fluting, connected by linking arm between two-layer, an embedded again pentagon patch resonator is connected with above-mentioned pentagon closed loop resonator by embedded arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010133507A CN101794926A (en) | 2010-03-26 | 2010-03-26 | Band-pass filter based on pentagon closed loop resonator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010133507A CN101794926A (en) | 2010-03-26 | 2010-03-26 | Band-pass filter based on pentagon closed loop resonator |
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| CN101794926A true CN101794926A (en) | 2010-08-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201010133507A Pending CN101794926A (en) | 2010-03-26 | 2010-03-26 | Band-pass filter based on pentagon closed loop resonator |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101950825A (en) * | 2010-09-01 | 2011-01-19 | 华东交通大学 | Novel compact dual-mode band-pass filter |
| CN102354779A (en) * | 2011-09-30 | 2012-02-15 | 北京航空航天大学 | Miniaturized tunable bandstop filter |
| EP3439110A4 (en) * | 2016-08-09 | 2019-12-11 | Tongyu Communication Inc. | Filter feed network and base-station antenna |
-
2010
- 2010-03-26 CN CN201010133507A patent/CN101794926A/en active Pending
Non-Patent Citations (3)
| Title |
|---|
| 《MICROWAVE AND OPTICAL TECHNOLOGY LETTERS》 20091231 Lin Yuan,etc DESIGN OF DUAL-MODE PENTAGON PATCH RESONATOR FILTER USING ASYMMETRICAL lambda/4 INTERDIGITAL COUPLED LINES 第2817-2819页 1-2 , * |
| LIN YUAN,ETC: "DESIGN OF DUAL-MODE PENTAGON PATCH RESONATOR FILTER USING ASYMMETRICAL λ/4 INTERDIGITAL COUPLED LINES", 《MICROWAVE AND OPTICAL TECHNOLOGY LETTERS》 * |
| Z.-X. CHEN，ETC: "NOVEL DUAL-MODE DUAL-BAND BANDPASS FILTER USING DOUBLE SQUARE-LOOP STRUCTURE", 《PROGRESS IN ELECTROMAGNETICS RESEARCH》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101950825A (en) * | 2010-09-01 | 2011-01-19 | 华东交通大学 | Novel compact dual-mode band-pass filter |
| CN102354779A (en) * | 2011-09-30 | 2012-02-15 | 北京航空航天大学 | Miniaturized tunable bandstop filter |
| EP3439110A4 (en) * | 2016-08-09 | 2019-12-11 | Tongyu Communication Inc. | Filter feed network and base-station antenna |
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Application publication date: 20100804 |