CN103490124A - Waveguide duplexer - Google Patents
Waveguide duplexer Download PDFInfo
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- CN103490124A CN103490124A CN201310446043.8A CN201310446043A CN103490124A CN 103490124 A CN103490124 A CN 103490124A CN 201310446043 A CN201310446043 A CN 201310446043A CN 103490124 A CN103490124 A CN 103490124A
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Abstract
The invention relates to a waveguide duplexer, and belongs to the technical field of electronics. A parasitic mode of a resonator is used as a non-transmission node of the waveguide duplexer, a transmission zero is generated out of a band of a path filter by controlling multipath effect of coupling of a dominant mode and another dominant mode and coupling of the dominant modes and the parasitic mode, and therefore the isolation of the duplexer is improved. Meanwhile, the implementation mode of the transmission zero of the type does not need cross coupling, the structural size of the duplexer can be reduced, and the processing and assembling process can be simplified.
Description
Technical field
The present invention relates to a kind of waveguide duplexer, belong to electronic technology field.
Background technology
Waveguide duplexer is the critical component that microwave is penetrated system.Along with the development of communication system in recent years, also more and more higher to the requirement of duplexer, requirement meets the index of high isolation, filter with low insertion loss under the restriction of given size and interface requirement.Generalized Chebyshev protosype makes and meets needs resonator number still less under same Out-of-band rejection condition by the introducing transmission zero, yet how to realize that in Wave guide system transmission zero is a difficult point, because the demand of specific topological form and coupling polarity is frequent and size and the interface requirement contradiction of duplexer.This patent has provided a kind of novel duplexer way of realization, does not need cross-couplings, and the spurious mode generation transmission zero by resonator, solved this contradiction effectively.
Summary of the invention
The objective of the invention is in order to propose a kind of waveguide duplexer.
The objective of the invention is to be achieved through the following technical solutions.
A kind of waveguide duplexer of the present invention, comprise cavity and cover plate, and cover plate covers on cavity and with cavity and is fixedly connected with;
Cavity comprises common port T shape knot and two path filters, and two path filters are symmetrical respectively is distributed in the two ends that common port T shape is tied; Two path filters are respectively left channel filter and right channel filter;
The left channel filter outwards comprises left side the first resonator, left side the second resonator, left side the 3rd resonator and left side the 4th resonator successively from common port T shape knot;
The right channel filter outwards comprises right side the first resonator, right side the second resonator, right side the 3rd resonator and right side the 4th resonator successively from common port T shape knot;
Described left side the first resonator, left side the 4th resonator, right side the first resonator and right side the 4th resonator are TE101 pattern rectangular waveguide resonator;
Described left side the second resonator, left side the 3rd resonator, right side the second resonator and right side the 3rd resonator are the TE201 mode resonator, the TE201 mode resonator is used the TE201 pattern as main mould, use the TE101 pattern as parasitic mode, the TE101 spurious mode is as the disresonance node; TE101 pattern in described TE101 pattern rectangular waveguide resonator is different from the frequency as the TE101 pattern of parasitic mode in the TE201 mode resonator.
Beneficial effect
Waveguide duplexer of the present invention can not used cross-couplings to produce transmission zero at band far away;
The present invention can be widely applied in the Radio-Frequency Wireless Communication system;
Waveguide duplexer of the present invention is used the spurious mode of resonator as non-transmission node, the multipath effect of the coupling by controlling main mould and main mould and main mould and spurious mode coupling produces transmission zero outside the band of path filter, thereby improves the isolation of duplexer; Simultaneously, because the transmission zero implementation of the type does not need cross-couplings, the physical dimension of duplexer be can reduce, processing and assembly technology simplified.
Two path filters of duplexer are used respectively two TE201 mould resonators, the resonance frequency of using its " low order pattern " TE101 pattern is as disresonance zero point, utilize the multipath coupling of disresonance generation at zero point, produce two transmission zeros at two passages respectively, for improving the band inhibition far away of path filter, thereby improve the mutual isolation of two passages.
The polarity of the coupling between disresonance zero point of controlling by the position of controlling filter coupled hole that filter cavity and its low order pattern form is controlled the position of transmission zero, make the high-end passage of duplexer produce transmission zero at low side, otherwise, the low side passage also produces two transmission zeros high-end, thereby improves the isolation of duplexer.Owing to not using cross coupling structure, the overall structure of duplexer is a list structure, is convenient to processing and assembling.
The accompanying drawing explanation
The structural representation that Fig. 1 is duplexer cavity of the present invention;
Fig. 2 is duplexer collaborative simulation field model, in each resonator, adds as seen from the figure for coordinately regulated lump port;
The final full-wave simulation that Fig. 3 is duplexer is figure as a result, by simulation result, uses as seen the synergy emulation method can be by repeatedly with method, obtaining fast the corresponding physical dimension of ideal response of duplexer.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
Embodiment
A kind of waveguide duplexer, comprise cavity and cover plate, and cover plate covers on cavity and with cavity and is fixedly connected with;
As shown in Figure 1, cavity comprises 1 and two path filter of common port T shape knot, and two path filters are symmetrical two ends that are distributed in common port T shape knot 1 respectively; Two path filters are respectively left channel filter and right channel filter;
The left channel filter outwards comprises left side the first resonator 2, left side the second resonator 3, left side the 3rd resonator 4 and left side the 4th resonator 5 successively from common port T shape knot 1;
The right channel filter outwards comprises right side the first resonator 2 ', right side the second resonator 3 ', right side the 3rd resonator 4 ' and right side the 4th resonator 5 ' successively from common port T shape knot 1;
Described left side the first resonator 2, left side the 4th resonator 5, right side the first resonator 2 ' and right side the 4th resonator 5 ' are TE101 pattern rectangular waveguide resonator;
Described left side the second resonator 3, left side the 3rd resonator 4, right side the second resonator 3 ' and right side the 3rd resonator 4 ' are the TE201 mode resonator, the TE201 mode resonator is used the TE201 pattern as main mould, use the TE101 pattern as parasitic mode, the TE101 spurious mode is as the disresonance node.
By controlling between coupling window M1(left side the second resonator 3 between resonator and left side the 3rd resonator 4) with M2(on the left of between the 3rd resonator 4 and left side the 4th resonator 5) and the transmission zero location of M1 ' (right side the second resonator 3 ' with right side the 3rd resonator 4 ' between) and M2 ' (right side the 3rd resonator 4 ' with right side the 4th resonator 5 ' between) relative position (whether M1 overlaps with M2 ' window center line with M2, M1 ') control channel filter.The window of resonator is opened at different positions (between coupling window M1 and M2, M1 ' and M2 ' center line distance) can control the ratio be coupled between the coupling of main mould and main mould between adjacent resonators and main mould and spurious mode, thereby the control transmission zero is apart from the distance of passband.
Determine coupling window size and waveguide length with collaborative simulation.
1) in the all-wave electromagnetic-field simulation model of duplexer, in the position of each resonator electric field maximum, add the lump port consistent with direction of an electric field, carry out the all-wave electromagnetic-field simulation.
2) emulation obtains three ripple ports and 8 the 11 port simulation results that the lump port forms by duplexer after completing, then use circuits cascading emulation, by between 8 lump port end and two ports, adding lumped capacity, the numerical value of regulating these lumped capacities makes the simulation result of duplexer reach the response results of desirable duplexer.
3), by the size judgement coupling window size of control capacittance and the deviation of ideal dimensions, then revise the length of the size resonator of coupling window in field model.Then again by step 1) start the design of next round simulation and optimization, until the simulation result of all-wave electromagnetic field model reaches desirable response results.
Duplexer for this type, due to the resonator that uses different mode, the coupling of traditional simulating analysis between can't the simple computation resonator, except the input and output waveguide port, position in the electric field maximum of each resonator adds a lump port, then in the simulation model of road, this N port circuit model is carried out to collaborative simulation, size by tuning capacitance judges coupling corresponding in all-wave electromagnetic field model, whether the corresponding physical size of frequency is suitable, how to revise, then according to the emulation that re-starts revised electromagnetic field model, so only need seldom several circulations just can find the diplexer structure size that meets index request, the full-wave simulation model as shown in Figure 2, final simulation result as shown in Figure 3, S11(return loss wherein) mean that energy is reflected back the energy of port one when port one is inputted, the S21(insertion loss) mean that port one is transferred to the energy of port 2, the S31(insertion loss) mean that port one is transferred to the energy of port 3.
Claims (1)
1. a waveguide duplexer, it is characterized in that: comprise cavity and cover plate, cover plate covers on cavity and with cavity and is fixedly connected with;
Cavity comprises common port T shape knot and two path filters, and two path filters are symmetrical respectively to be distributed in common port T shape and to tie 1 two ends; Two path filters are respectively left channel filter and right channel filter;
The left channel filter outwards comprises left side the first resonator, left side the second resonator, left side the 3rd resonator and left side the 4th resonator successively from common port T shape knot;
The right channel filter outwards comprises right side the first resonator, right side the second resonator, right side the 3rd resonator and right side the 4th resonator successively from common port T shape knot;
Described left side the first resonator, left side the 4th resonator, right side the first resonator and right side the 4th resonator are TE101 pattern rectangular waveguide resonator;
Described left side the second resonator, left side the 3rd resonator, right side the second resonator and right side the 3rd resonator are the TE201 mode resonator, the TE201 mode resonator is used the TE201 pattern as main mould, use the TE101 pattern as parasitic mode, the TE101 spurious mode is as the disresonance node; TE101 pattern in TE101 pattern rectangular waveguide resonator is different from the frequency as the TE101 pattern of parasitic mode in the TE201 mode resonator.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310446043.8A CN103490124B (en) | 2013-09-26 | 2013-09-26 | A kind of waveguide duplexer |
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| CN201310446043.8A CN103490124B (en) | 2013-09-26 | 2013-09-26 | A kind of waveguide duplexer |
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| CN103490124A true CN103490124A (en) | 2014-01-01 |
| CN103490124B CN103490124B (en) | 2016-03-30 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106785270A (en) * | 2016-12-29 | 2017-05-31 | 西安空间无线电技术研究所 | A kind of microwave complementation duplexer |
| CN106898849A (en) * | 2017-04-25 | 2017-06-27 | 四川省韬光通信有限公司 | A kind of dielectric waveguide filter with cross coupling structure |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1341253A1 (en) * | 2002-02-06 | 2003-09-03 | Quasar Microwave Technology Limited | Waveguide monitoring arrangement |
| EP1564835A1 (en) * | 2004-02-16 | 2005-08-17 | Siemens Mobile Communications S.p.A. | Inline waveguide filter with up to two out-of-band transmission zeros |
| CN102709630A (en) * | 2011-06-02 | 2012-10-03 | 无锡波联电科技有限公司 | Filter of satellite communication earth station receiver |
-
2013
- 2013-09-26 CN CN201310446043.8A patent/CN103490124B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1341253A1 (en) * | 2002-02-06 | 2003-09-03 | Quasar Microwave Technology Limited | Waveguide monitoring arrangement |
| EP1564835A1 (en) * | 2004-02-16 | 2005-08-17 | Siemens Mobile Communications S.p.A. | Inline waveguide filter with up to two out-of-band transmission zeros |
| CN102709630A (en) * | 2011-06-02 | 2012-10-03 | 无锡波联电科技有限公司 | Filter of satellite communication earth station receiver |
Non-Patent Citations (1)
| Title |
|---|
| 高秀晓: "多模双工器技术", 《中国优秀硕士学位论文全文数据库》, 15 March 2011 (2011-03-15), pages 4 - 23 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106785270A (en) * | 2016-12-29 | 2017-05-31 | 西安空间无线电技术研究所 | A kind of microwave complementation duplexer |
| CN106785270B (en) * | 2016-12-29 | 2019-06-18 | 西安空间无线电技术研究所 | A kind of microwave complementation duplexer |
| CN106898849A (en) * | 2017-04-25 | 2017-06-27 | 四川省韬光通信有限公司 | A kind of dielectric waveguide filter with cross coupling structure |
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| CN103490124B (en) | 2016-03-30 |
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