CN103152002A - Conode series resonance structure inductance-capacitance filter - Google Patents
Conode series resonance structure inductance-capacitance filter Download PDFInfo
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- CN103152002A CN103152002A CN2011104029217A CN201110402921A CN103152002A CN 103152002 A CN103152002 A CN 103152002A CN 2011104029217 A CN2011104029217 A CN 2011104029217A CN 201110402921 A CN201110402921 A CN 201110402921A CN 103152002 A CN103152002 A CN 103152002A
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Abstract
The invention provides a conode series resonance structure inductance-capacitance filter which includes four parts including two series-arm series resonance units and two parallel-arm series resonance units. The conode series resonance structure inductance-capacitance filter is characterized in that the four series resonance units are connected on a conode. The conode series resonance structure inductance-capacitance filter has the advantages of being capable of doubling the number of filter sections through replication and cascade, and satisfying requirements of being high in band edge steepness and restraining stopband; the design is simple, the structure is compact, and the filter is easy to debug and manufacture.
Description
(1) technical field:
The present invention relates to a kind of inductance capacitance (LC) filter, particularly a kind of conode series resonance structure choke-condenser filter.
(2) background technology:
Filter is the Primary Component in electronics, communication system, and major function is that the various signals of telecommunication are extracted, separate or suppress according to frequency requirement.Development along with electronic technology, the application of electronic product is more and more extensive, constantly expand owing to using frequency range, the interference of electric room also is on the rise, therefore filter not only will be guaranteed the normal reliable work of electronic product own, and will reduce and influence each other, guarantee normal wireless operational environment.
The characteristic usable frequency of filter responds to describe, and by the difference of its characteristic, can be divided into low pass filter, high pass filter, band pass filter, band stop filter, and wherein the most frequently used be band pass filter.Filter divides from structure, comprise active and passive two large classes, widely used is passive filter, by composed component different common, resistance capacitance (RC) filter, inductance capacitance (LC) filter, ceramic filter, crystal filter, cavity body filter, Surface Acoustic Wave Filter, screw-filter, dielectric filter, microstrip filter etc. are arranged.The application of filter is very extensive, comprises the electronic equipments such as radio communication, satellite communication, TV, broadcasting, post and telecommunications, navigation, number biography, numerical control, remote control, remote measurement, electronic countermeasures, measuring instrument.And various filters all have application characteristic separately, are applicable to respectively in different application directions.
The designing technique of traditional inductance capacitance (LC) filter is very ripe, but the circuit more complicated of general choke-condenser filter, design needs the factor of consideration also very many.Want to design high performance filter, need the designer to have very rich experience, and for the choke-condenser filter of high joint number, make and get up to carry out a large amount of debugging work, time and effort consuming.
The present invention has designed a kind of conode series resonance structure choke-condenser filter, can realize the convenient design of filter, can simply copy and cascade filter simultaneously, realize the rapid Design of the high performance requirements filter that joint number doubles, simultaneously, because each resonant element in filter construction and filter frequency domain characteristic have direct corresponding relation, debugging is made simple.
(3) summary of the invention:
The object of the invention is to design a kind of conode series resonance structure choke-condenser filter, adopt the choke-condenser filter of this structural design, the transmission zero of designing filter flexibly, realize the band edge steepness of filter and the flexible balance of Out-of-band rejection, simultaneously can be simply to conode series resonance structure choke-condenser filter copy, cascade, realize the rapid Design of high joint number, high performance requirements filter.This conode series resonance structure choke-condenser filter has compact conformation, simplicity of design, technical indicator excellence, debugs characteristics easily.
Technical scheme of the present invention: a kind of conode series resonance structure choke-condenser filter, comprise two series arm series resonance unit, two and arm series resonance unit four parts, it is characterized in that four series resonance unit are connected in common node jointly.The working mechanism of this conode series resonance structure choke-condenser filter is: conode series resonance structure choke-condenser filter comprises four series resonance unit, each series resonance unit is to be formed by an inductance and a capacitances in series, two series arm series resonance unit are identical, its resonant frequency point is the centre frequency of filter, the resonance frequency of two and arm series resonance unit is different, lay respectively at filter low side stopband and high-end stopband, two transmission zeros of shaping filter.When the filter of design requires to satisfy simultaneously the high and stopband inhibition of band edge steepness when high, just conode series resonance Structure Filter can be copied rear cascade, complete being doubled of choke-condenser filter joint number, design very convenient.
The series arm series resonance unit of above-mentioned said a kind of conode series resonance structure choke-condenser filter is to be made of an inductance and a capacitances in series, and an end is port of wave filter, a termination common node.
The also arm series resonance unit of above-mentioned said a kind of conode series resonance structure choke-condenser filter is to be made of an inductance and a capacitances in series, an end ground connection, a termination common node.
The series arm series resonance unit of above-mentioned said a kind of conode series resonance structure choke-condenser filter, two series arm series resonance unit are identical, and resonance frequency is the centre frequency of filter.
The also arm series resonance unit of above-mentioned said a kind of conode series resonance structure choke-condenser filter, two also arm series resonance unit is different, the resonance frequency of a series resonance unit is the low side stopband transmission zero of filter, and the resonance frequency of a series resonance unit is the high-end stopband transmission zero of filter.
Inductance in the resonant element of above-mentioned said a kind of conode series resonance structure choke-condenser filter can be chip inductor, magnetic core coil inductance, air core coil inductance, planar circuit inductance.
Electric capacity in the series resonance unit of above-mentioned said a kind of conode series resonance structure choke-condenser filter can be patch capacitor, ceramic disc capacitor, leaded multilayer ceramic capacitor, planar circuit electric capacity.
Above-mentioned said a kind of conode series resonance structure choke-condenser filter can copy cascade, becomes the filter that joint number doubles.
Superiority of the present invention is: 1, a kind of conode series resonance structure choke-condenser filter, comprise two series arm series resonance unit, two and arm series resonance unit four parts, it is characterized in that four series resonance unit are connected in same node jointly; 2, this conode series resonance structure choke-condenser filter can just can be realized being doubled of filter joint number by copying and cascade, satisfies the requirement that high band edge steepness and stopband suppress, simplicity of design; 3, compact conformation of the present invention, the debugging of filter is made very convenient.
(4) description of drawings:
Accompanying drawing 1 is the circuit diagram of the related a kind of conode series resonance structure choke-condenser filter of the present invention.
Accompanying drawing 2 is the related a kind of conode series resonance structure choke-condenser filter of the present invention, and the inductance of its each series resonance unit and electric capacity position exchange.
Accompanying drawing 3 is two circuit diagrams after identical conode series resonance structure choke-condenser filter cascade.
Accompanying drawing 4 is two identical conode series resonance structure choke-condenser filter cascades and two series inductances of cascade place is combined into a circuit diagram after inductance.
Accompanying drawing 5 is the frequency response curve of the related a kind of conode series resonance structure choke-condenser filter of the present invention.
Accompanying drawing 6 is two frequency response curves after identical conode series resonance structure choke-condenser filter cascade.
Wherein: 100 is conode series resonance structure choke-condenser filter body, 110,120 is two series arm series resonance unit, 111,121 is the inductance of two series arm series resonance unit, 112,122 is the electric capacity of two series arm series resonance unit, 130,140 is two also arm series resonance unit, 131,141 is two also inductance of arm series resonance unit, 132,142 is two also electric capacity of arm series resonance unit, 150 is input port, 160 is output port, and 170 is common node; 200 is the conode series resonance structure choke-condenser filter body of electric pole electric capacity location swap; 300 is the filter body after the cascade of two conode series resonance structure choke-condenser filters; 400 are the choke-condenser filter cascade of two conode series resonance structures and two series inductances of cascade place are combined into a filter body after inductance; 500 is the frequency response curve of conode series resonance structure choke-condenser filter, and 510 is the filter center frequency, and 520 is low side stopband transmission zero, and 530 is high-end stopband transmission zero; 600 is the filter freguency response curve after the cascade of two conode series resonance structure choke-condenser filters.
(5) embodiment:
Embodiment 1: a kind of conode series resonance structure choke-condenser filter 100, comprise 110,120, two of two series arm series resonance unit and arm series resonance unit 130,140 4 parts, it is characterized in that four series resonance unit 110,120,130,140 are connected in common node 170 jointly.the working mechanism of this conode series resonance structure choke-condenser filter 100 is: conode series resonance structure choke-condenser filter 100 comprises four series resonance unit 110, 120, 130, 140, each series resonance unit is to be formed by an inductance and a capacitances in series, two series arm series resonance unit 110, 120 is identical, its resonant frequency point is the centre frequency 510 of filter, two and arm series resonance unit 130, 140 resonance frequency is different, lay respectively at filter low side stopband and high-end stopband, two transmission zeros 520 of shaping filter, 530.When the filter of design requires to satisfy simultaneously the high and stopband inhibition of band edge steepness when high, just conode series resonance Structure Filter 100 can be copied rear cascade, complete being doubled of choke-condenser filter joint number, design very convenient.
The series arm series resonance unit 110 of above-mentioned said a kind of conode series resonance structure choke-condenser filter 100 is to be made of an inductance 111 and electric capacity 112 series connection, and an end is port of wave filter 150, one termination common nodes 170.
The also arm series resonance unit 130 of above-mentioned said a kind of conode series resonance structure choke-condenser filter 100 is to be made of an inductance 131 and electric capacity 132 series connection, an end ground connection, a termination common node 170.
The series arm series resonance unit of above-mentioned said a kind of conode series resonance structure choke-condenser filter 100, two series arm series resonance unit 110,120 are identical, and resonance frequency is the centre frequency 510 of filter.
The also arm series resonance unit of above-mentioned said a kind of conode series resonance structure choke-condenser filter 100, two and arm series resonance unit 130,140 differences, the resonance frequency of a series resonance unit 130 is that the resonance frequency of 420, one of the low side stopband transmission zeros series resonance unit 140 of filter is the high-end stopband transmission zero 530 of filter.
Inductance 111,121,131,141 in the series resonance unit of above-mentioned said a kind of conode series resonance structure choke-condenser filter 100 is magnetic core coil inductance.
Electric capacity 112,122,132,142 in the series resonance unit of above-mentioned said a kind of conode series resonance structure choke-condenser filter 100 is ceramic disc capacitors.
Embodiment 2: above-mentioned said a kind of conode series resonance structure choke-condenser filter 100 can copy cascade, becomes the filter 300 that joint number doubles.
Claims (8)
1. conode series resonance structure choke-condenser filter comprises two series arm series resonance unit, two and arm series resonance unit four parts, it is characterized in that four series resonance unit are connected in common node jointly.
2. said a kind of conode series resonance structure choke-condenser filter according to claim 1 is characterized in that said series arm series resonance unit being to be formed by an inductance and a capacitances in series, and an end is port of wave filter, a termination common node.
3. said a kind of conode series resonance structure choke-condenser filter according to claim 1 is characterized in that said and arm series resonance unit, is to be made of an inductance and a capacitances in series, an end ground connection, a termination common node.
4. said a kind of conode series resonance structure choke-condenser filter according to claim 1 is characterized in that said series arm series resonance unit, and two series arm series resonance unit are identical, and resonance frequency is the centre frequency of filter.
5. said a kind of conode series resonance structure choke-condenser filter according to claim 1, it is characterized in that said and arm series resonance unit, two also arm series resonance unit is different, the resonance frequency of a series resonance unit is the low side stopband transmission zero of filter, and the resonance frequency of a series resonance unit is the high-end stopband transmission zero of filter.
6. said a kind of conode series resonance structure choke-condenser filter according to claim 1 is characterized in that the inductance in said series resonance unit, can be chip inductor, magnetic core coil inductance, air core coil inductance, planar circuit inductance.
7. said a kind of conode series resonance structure choke-condenser filter according to claim 1 is characterized in that the electric capacity in said series resonance unit, can be patch capacitor, ceramic disc capacitor, leaded multilayer ceramic capacitor, planar circuit electric capacity.
8. said a kind of conode series resonance structure choke-condenser filter according to claim 1, is characterized in that said filter can copy cascade, becomes the filter that joint number doubles.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011104029217A CN103152002A (en) | 2011-12-07 | 2011-12-07 | Conode series resonance structure inductance-capacitance filter |
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| CN2011104029217A CN103152002A (en) | 2011-12-07 | 2011-12-07 | Conode series resonance structure inductance-capacitance filter |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103401822A (en) * | 2013-07-25 | 2013-11-20 | 上海航天测控通信研究所 | Satellite-borne X-frequency band data transmission out-of-band rejection device and satellite-borne X-frequency band data transmission out-of-band rejection method |
| CN104865476A (en) * | 2015-06-12 | 2015-08-26 | 上海埃德电子股份有限公司 | Filter network for oscillatory wave immunity test and mounting structure of filter network |
| CN112953431A (en) * | 2021-01-28 | 2021-06-11 | 北京邮电大学 | IPD filter chip suitable for microwave and millimeter wave |
| CN113630102A (en) * | 2021-07-19 | 2021-11-09 | 天通瑞宏科技有限公司 | Acoustic wave filter |
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| CN101072017A (en) * | 2006-05-11 | 2007-11-14 | 精工爱普生株式会社 | Split ring resonator bandpass filter, electronic device including said bandpass filter, and method of producing said bandpass filter |
| CN101272133A (en) * | 2008-05-21 | 2008-09-24 | 日月光半导体制造股份有限公司 | Band-pass filter |
| CN101640519A (en) * | 2009-09-02 | 2010-02-03 | 南京理工大学 | High stop-band inhibiting multi-zero 2.4 GHz mini filter |
| CN101692512A (en) * | 2009-09-28 | 2010-04-07 | 长安大学 | Ultra wide band bandpass filter based on ground defective grounding structure |
| US20100207706A1 (en) * | 2007-10-01 | 2010-08-19 | Masaya Tamura | Left-handed filter |
-
2011
- 2011-12-07 CN CN2011104029217A patent/CN103152002A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101072017A (en) * | 2006-05-11 | 2007-11-14 | 精工爱普生株式会社 | Split ring resonator bandpass filter, electronic device including said bandpass filter, and method of producing said bandpass filter |
| US20100207706A1 (en) * | 2007-10-01 | 2010-08-19 | Masaya Tamura | Left-handed filter |
| CN101272133A (en) * | 2008-05-21 | 2008-09-24 | 日月光半导体制造股份有限公司 | Band-pass filter |
| CN101640519A (en) * | 2009-09-02 | 2010-02-03 | 南京理工大学 | High stop-band inhibiting multi-zero 2.4 GHz mini filter |
| CN101692512A (en) * | 2009-09-28 | 2010-04-07 | 长安大学 | Ultra wide band bandpass filter based on ground defective grounding structure |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103401822A (en) * | 2013-07-25 | 2013-11-20 | 上海航天测控通信研究所 | Satellite-borne X-frequency band data transmission out-of-band rejection device and satellite-borne X-frequency band data transmission out-of-band rejection method |
| CN103401822B (en) * | 2013-07-25 | 2016-10-26 | 上海航天测控通信研究所 | The number of a kind of spaceborne X frequency range passes Out-of-band rejection devices and methods therefor |
| CN104865476A (en) * | 2015-06-12 | 2015-08-26 | 上海埃德电子股份有限公司 | Filter network for oscillatory wave immunity test and mounting structure of filter network |
| CN112953431A (en) * | 2021-01-28 | 2021-06-11 | 北京邮电大学 | IPD filter chip suitable for microwave and millimeter wave |
| CN113630102A (en) * | 2021-07-19 | 2021-11-09 | 天通瑞宏科技有限公司 | Acoustic wave filter |
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Application publication date: 20130612 |