CN102709630A - Filter of satellite communication earth station receiver - Google Patents
Filter of satellite communication earth station receiver Download PDFInfo
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- CN102709630A CN102709630A CN2012101803836A CN201210180383A CN102709630A CN 102709630 A CN102709630 A CN 102709630A CN 2012101803836 A CN2012101803836 A CN 2012101803836A CN 201210180383 A CN201210180383 A CN 201210180383A CN 102709630 A CN102709630 A CN 102709630A
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Abstract
A filter of a satellite communication earth station receiver comprises a cover plate (1) and a bottom plate (2), wherein the bottom plate (2) comprises an input waveguide cavity (3) and an output waveguide cavity (4), between which at least two over-sized waveguide cavities are arranged. According to the invention, non physical cross coupling is adopted to overcome the limitation of physical size, so as to realize a transmission zero away from passband; and stopband attenuation away from the passband can be greatly increased through widening the stopband of the filter under the condition of not changing the stages of the filter.
Description
Technical field
The present invention relates to a kind of waveguide filter, relate in particular to and contain cross-linked waveguide filter.
Background technology
At present, band pass filter is a kind of base electronic components and parts, and it is used for the signal of telecommunication in the selective filter passband, the signal of telecommunication in the rejects trap stopband simultaneously.The microwave and millimeter wave band pass filter should have low insertion loss, high selectivity and wide stopband in being commonly used in modern radio set.For example; In Ka band satellite communication ground station receiver; Filter should be able to transmit the signal in the 19.2 GHz-21.2 GHz frequency bands, can suppress the signal in the transmit frequency band 29.5 GHz-30 GHz frequency bands simultaneously, and the insertion loss in the passband should be less than 1dB; For fear of receive simultaneously and launch and produce from blocking effect, the stopband attenuation of filter at least should be greater than 45dB.
Waveguide filter has advantages such as loss is little, power capacity is big, and effect has had a strong impact on the Stopband Performance of waveguide filter but the rich shade of waveguide is loose.Although adopt E face discontinuity, like ridge waveguide, can reduce the effect of dispersion of waveguide, also cause the whole filter complex structure simultaneously, processing cost significantly increases.Increase the progression of filter, also can widen the stopband of waveguide filter, improve the stopband attenuation of filter, but also increased the insertion loss and the volume of filter simultaneously.
Be positioned at selectivity and stopband attenuation that transmission zero on the complex frequency face imaginary axis can be used for improving filter.The method that realizes transmission zero has two kinds usually: the one, and the limit extractive technique.Transmission zero adopts band resistance resonator to realize, the position of transmission zero is by the resonance frequency decision of the band resistance resonator of correspondence, and this band resistance resonator also produces a transmission pole simultaneously.At this moment, all couplings can have identical polar.The 2nd, the physical intersection coupling technique.Between non-adjacent resonant element, introduce cross-couplings, can produce many signal path.If at certain frequency, the signal amplitude of two paths equates, opposite in sign, and the signal of this two paths is cancelled each other so, and a transmission zero will appear at this frequency.At this moment, must realize the coupling of two kinds of polarity simultaneously.But because the restriction of physical size, the transmission zero of utilizing top two kinds of technology to realize is nearer apart from passband usually, can not be used for improving the stopband attenuation away from passband.
Summary of the invention
The objective of the invention is to propose a kind of satellite communication earth station filter for receiver to the problems referred to above.Utilize non-physical intersection to be coupled and realize transmission zero, thereby under the situation that does not increase filter order, widen filter stop bend, increase substantially stopband attenuation away from passband away from passband.
Technical scheme of the present invention is:
A kind of satellite communication earth station filter for receiver, it comprises cover plate and base plate, described base plate comprises incoming wave guide cavity and output wave guide cavity, between incoming wave guide cavity and output wave guide cavity, is provided with at least two and crosses the size waveguide resonant cavity.
Size waveguide resonant cavity excessively of the present invention is a plurality of, and each is crossed between the size waveguide resonant cavity and carries out cascade through coupling iris.
The size waveguide resonant cavity of crossing of the present invention comprises that at least one TE101/TE301 crosses the size waveguide cavity and crosses the size waveguide cavity with at least one TE101/TE201.
The size waveguide resonant cavity of crossing of the present invention comprises that three TE101/TE301 cross the size waveguide cavity and a TE101/TE201 crosses the size waveguide cavity, and each is crossed between the size waveguide resonant cavity and carries out cascade through coupling iris.
The size waveguide resonant cavity of crossing of the present invention is processed by metallic aluminium or other metal, and cavity inner wall is silver-plated; First crosses one section waveguide of size waveguide resonant cavity through the coupling iris coupling excitation; Be coupled to last through coupling iris and cross the size waveguide resonant cavity, the output passband signal.
The size waveguide resonant cavity of respectively crossing of the present invention all has main mould and a higher mode; Two bars transmission paths are provided; The signal stack that amplitude equates, phase place is opposite produces transmission zero; And transmission zero is positioned at the stopband far away apart from passband, through changing the relative angle of I/O, changes the position of transmission zero.
Beneficial effect of the present invention:
The present invention utilizes non-physical intersection to be coupled and realizes the transmission zero away from passband, thereby under the situation that does not increase filter order, widens filter stop bend, increases substantially the stopband attenuation away from passband.
Waveguide filter of the present invention is formed by the cascade of several size waveguide resonant cavity excessively, and one section waveguide is adopted in input and output.The passband of filter is formed by the main mould of crossing the size waveguide resonant cavity, and the higher mode of crossing the size waveguide resonant cavity provides the signal path of another signal path and the formation of main mould to superpose mutually, thereby has produced the transmission zero away from passband.Cross the size of size waveguide resonant cavity and coupling iris, can confirm that each transmission zero is determined separately by the mistake size waveguide resonant cavity of correspondence and the size of coupling iris thereof according to pass-band performance and the needed position of transmission zero.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the S parameter of Ka band satellite communication ground station filter for receiver.
Fig. 3 is the group delay of Ka band satellite communication ground station filter for receiver.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further described.
A kind of satellite communication earth station filter for receiver, it comprises cover plate 1 and base plate 2, described base plate 2 comprises incoming wave guide cavity 3 and output wave guide cavity 4, between incoming wave guide cavity 3 and output wave guide cavity 4, is provided with at least two and crosses the size waveguide resonant cavity.
Waveguide filter of the present invention comprises
Through several size waveguide resonant cavities of crossing that coupling iris carries out cascade, the chamber is processed by metallic aluminium or other metal, and cavity wall is silver-plated;
First crosses one section waveguide of size waveguide resonant cavity through the diaphragm coupling excitation;
Be coupled to last through diaphragm and cross the size waveguide resonant cavity, the output passband signal.
As shown in Figure 1, the size waveguide resonant cavity of crossing of the present invention comprises that three TE101/TE301 cross size waveguide cavity 5-1 and a TE101/TE201 crosses size waveguide cavity 5-2, and each is crossed between the size waveguide resonant cavity and carries out cascade through coupling iris 6.
The size waveguide resonant cavity of crossing of the present invention is processed by metallic aluminium or other metal, and cavity inner wall is silver-plated; First crosses one section waveguide of size waveguide resonant cavity through coupling iris 6 coupling excitations; Be coupled to last through coupling iris 6 and cross the size waveguide resonant cavity, the output passband signal.
The size waveguide resonant cavity of respectively crossing of the present invention all has main mould and a higher mode; Two bars transmission paths are provided; The signal stack that amplitude equates, phase place is opposite produces transmission zero; And transmission zero is positioned at the stopband far away apart from passband, through changing the relative angle of I/O, changes the position of transmission zero.A kind of waveguide filter of the present invention is formed by the cascade of several size waveguide resonant cavity excessively, and one section waveguide is adopted in input and output.The passband of filter is formed by the main mould of crossing the size waveguide resonant cavity, and the higher mode of crossing the size waveguide resonant cavity provides the signal path of another signal path and the formation of main mould to superpose mutually, thereby has produced the transmission zero away from passband.Cross the size of size waveguide resonant cavity and coupling iris, can confirm that each transmission zero is determined separately by the mistake size waveguide resonant cavity of correspondence and the size of coupling iris thereof according to pass-band performance and the needed position of transmission zero.
During practical implementation:
This filter is a waveguiding structure, and it is processed by metallic aluminium or other metal fully, comprises cavity and cover plate two parts, and wire chamber inwall and metal cover board bottom are silver-plated, and metal cover board arrives following cavity through screw.Each unit is crossed the size waveguide resonant cavity and is all produced a transmission pole and a transmission zero, and in order to obtain the transmission zero of diverse location, it is all different with the size of the coupling iris of correspondence that the size waveguide resonant cavity is crossed in each unit.
As shown in Figure 1; Realize this filter based on Ka band satellite communication ground station receiver pass-band; It is crossed size waveguide cavity and TE101/TE201 by three TE101/TE301 and crosses the size waveguide cavity and form that (module exponent of TE101 mould on directions X is 1; Module exponent on the Y direction is 0, and the module exponent on the Z direction is 1; The module exponent of TE301 mould on directions X is 3, and the module exponent on the Y direction is 0, and the module exponent on the Z direction is 1; The module exponent of TE201 mould on directions X is 2, and the module exponent on the Y direction is 0, and the module exponent on the Z direction is 1).The height of whole filter is 0.17 inch, and the thickness of all diaphragms is 16 mils, and the radius of corner of diaphragm is 31 mils.Its passband is positioned at 19.2 GHz-21.2 GHz, and the insertion loss of passband is superior to 0.2dB, and group delay is changed to 0.3ns.Decay at transmit frequency band 29.5 GHz-30 GHz is superior to 54 dB.TE101/TE201 crosses the size waveguide cavity and has produced near the transmission zero that is positioned at the 29.5GHz, and TE101/TE301 crosses the size waveguide cavity and produced near the transmission zero that is positioned at the 31GHz.
The present invention does not relate to all identical with the prior art prior art that maybe can adopt of part and realizes.
Claims (6)
1. satellite communication earth station filter for receiver; It comprises cover plate (1) and base plate (2); Described base plate (2) comprises incoming wave guide cavity (3) and output wave guide cavity (4), it is characterized in that between incoming wave guide cavity (3) and output wave guide cavity (4), being provided with at least two and crosses the size waveguide resonant cavity.
2. satellite communication earth station filter for receiver according to claim 1 is characterized in that described size waveguide resonant cavity excessively is a plurality of, and each is crossed between the size waveguide resonant cavity and carries out cascade through coupling iris (6).
3. satellite communication earth station filter for receiver according to claim 1 and 2 is characterized in that the described size waveguide resonant cavity of crossing comprises that at least one TE101/TE301 crosses size waveguide cavity (5-1) and at least one TE101/TE201 crosses size waveguide cavity (5-2).
4. satellite communication earth station filter for receiver according to claim 3; It is characterized in that the described size waveguide resonant cavity of crossing comprises that three TE101/TE301 cross size waveguide cavity (5-1) and a TE101/TE201 crosses size waveguide cavity (5-2), each is crossed between the size waveguide resonant cavity and carries out cascade through coupling iris (6).
5. satellite communication earth station filter for receiver according to claim 1 is characterized in that the described size waveguide resonant cavity of crossing is processed by metallic aluminium or other metal, and cavity inner wall is silver-plated; First crosses one section waveguide of size waveguide resonant cavity through coupling iris (6) coupling excitation; Be coupled to last through coupling iris (6) and cross the size waveguide resonant cavity, the output passband signal.
6. satellite communication earth station filter for receiver according to claim 1; It is characterized in that the described size waveguide resonant cavity of respectively crossing all has main mould and a higher mode; Two bars transmission paths are provided, and the signal stack that amplitude equates, phase place is opposite produces transmission zero, and transmission zero is positioned at the stopband far away apart from passband; Through changing the relative angle of I/O, change the position of transmission zero.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201210180383.6A CN102709630B (en) | 2011-06-02 | 2012-06-01 | Filter of satellite communication earth station receiver |
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| CN2011101470937 | 2011-06-02 | ||
| CN201110147093 | 2011-06-02 | ||
| CN201110147093.7 | 2011-06-02 | ||
| CN201210180383.6A CN102709630B (en) | 2011-06-02 | 2012-06-01 | Filter of satellite communication earth station receiver |
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| CN102709630A true CN102709630A (en) | 2012-10-03 |
| CN102709630B CN102709630B (en) | 2015-09-02 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103490124A (en) * | 2013-09-26 | 2014-01-01 | 西安空间无线电技术研究所 | Waveguide duplexer |
| CN104241746A (en) * | 2014-09-09 | 2014-12-24 | 江苏贝孚德通讯科技股份有限公司 | Waveguide high-frequency low-pass filter |
| CN105304981A (en) * | 2015-10-30 | 2016-02-03 | 成都九洲迪飞科技有限责任公司 | Wideband high-inhibition band-pass filter covering Ka band |
| CN105406157A (en) * | 2015-12-22 | 2016-03-16 | 江苏贝孚德通讯科技股份有限公司 | Diaphragm type adjustable filter |
| CN105470605A (en) * | 2015-12-18 | 2016-04-06 | 航天恒星科技有限公司 | Waveguide filter and wave band transmitter |
| CN106992346A (en) * | 2017-04-07 | 2017-07-28 | 北京理工大学 | A kind of Millimeter Wave Rectangular Wave cavity body filter with dual transfer zero |
| CN110336101A (en) * | 2019-06-28 | 2019-10-15 | 电子科技大学 | A kind of Wide stop bands inductance diaphragm, capacitive window interlock loading waveguide bandpass filter |
| CN111384552A (en) * | 2018-12-29 | 2020-07-07 | 深圳市大富科技股份有限公司 | Filter and communication device |
| CN112909458A (en) * | 2021-02-08 | 2021-06-04 | 湖南国科雷电子科技有限公司 | W-waveband E-plane waveguide filter |
| CN117766965A (en) * | 2023-12-28 | 2024-03-26 | 北京华通时空通信技术有限公司 | Filter |
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| US6657521B2 (en) * | 2002-04-26 | 2003-12-02 | The Boeing Company | Microwave waveguide filter having rectangular cavities, and method for its fabrication |
| US20050264379A1 (en) * | 2004-05-28 | 2005-12-01 | New Japan Radio Co., Ltd. | Filter |
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| US6657521B2 (en) * | 2002-04-26 | 2003-12-02 | The Boeing Company | Microwave waveguide filter having rectangular cavities, and method for its fabrication |
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| WO2007013723A1 (en) * | 2005-07-26 | 2007-02-01 | Electronics And Telecommunications Research Institute | Inductive waveguide iris for adaptable tuning |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103490124A (en) * | 2013-09-26 | 2014-01-01 | 西安空间无线电技术研究所 | Waveguide duplexer |
| CN103490124B (en) * | 2013-09-26 | 2016-03-30 | 西安空间无线电技术研究所 | A kind of waveguide duplexer |
| CN104241746A (en) * | 2014-09-09 | 2014-12-24 | 江苏贝孚德通讯科技股份有限公司 | Waveguide high-frequency low-pass filter |
| CN105304981B (en) * | 2015-10-30 | 2018-07-06 | 成都九洲迪飞科技有限责任公司 | The broadband height for covering Ka wave bands inhibits bandpass filter |
| CN105304981A (en) * | 2015-10-30 | 2016-02-03 | 成都九洲迪飞科技有限责任公司 | Wideband high-inhibition band-pass filter covering Ka band |
| CN105470605A (en) * | 2015-12-18 | 2016-04-06 | 航天恒星科技有限公司 | Waveguide filter and wave band transmitter |
| CN105406157B (en) * | 2015-12-22 | 2019-04-02 | 江苏贝孚德通讯科技股份有限公司 | A kind of diaphragm type tunable filter |
| CN105406157A (en) * | 2015-12-22 | 2016-03-16 | 江苏贝孚德通讯科技股份有限公司 | Diaphragm type adjustable filter |
| CN106992346A (en) * | 2017-04-07 | 2017-07-28 | 北京理工大学 | A kind of Millimeter Wave Rectangular Wave cavity body filter with dual transfer zero |
| CN106992346B (en) * | 2017-04-07 | 2019-02-19 | 北京理工大学 | A kind of Millimeter Wave Rectangular Wave cavity body filter with dual transfer zero |
| CN111384552A (en) * | 2018-12-29 | 2020-07-07 | 深圳市大富科技股份有限公司 | Filter and communication device |
| CN110336101A (en) * | 2019-06-28 | 2019-10-15 | 电子科技大学 | A kind of Wide stop bands inductance diaphragm, capacitive window interlock loading waveguide bandpass filter |
| CN112909458A (en) * | 2021-02-08 | 2021-06-04 | 湖南国科雷电子科技有限公司 | W-waveband E-plane waveguide filter |
| CN117766965A (en) * | 2023-12-28 | 2024-03-26 | 北京华通时空通信技术有限公司 | Filter |
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| CN102709630B (en) | 2015-09-02 |
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