CN103531868A - Substrate integration waveguide duplexer - Google Patents
Substrate integration waveguide duplexer Download PDFInfo
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- CN103531868A CN103531868A CN201310498569.0A CN201310498569A CN103531868A CN 103531868 A CN103531868 A CN 103531868A CN 201310498569 A CN201310498569 A CN 201310498569A CN 103531868 A CN103531868 A CN 103531868A
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Abstract
The invention relates to a substrate integration waveguide duplexer which comprises a main body part, and a common end connector, a receiving filter channel output end and a transmitting filter channel receiving end which are arranged on the main body part, wherein a first receiving resonant cavity, a second receiving resonant cavity, a first transmitting resonant cavity, a second transmitting resonant cavity and a dual-mode common resonant cavity are arranged on the main body part; the first receiving resonant cavity, the second receiving resonant cavity and the dual-mode common resonant cavity form a receiving filter channel used for filtering a signal received by the common end connector; the first transmitting resonant cavity, the second transmitting resonant cavity and the dual-mode common resonant cavity form a transmitting filter channel used for filtering a signal to be transmitted by the common end connector; and the transmitting filter channel and the receiving filter channel are isolated mutually. The substrate integration waveguide duplexer has the benefits of simple structure and small size.
Description
Technical field
The present invention relates to the communications field, be specifically related to a kind of substrate integration wave-guide duplexer.
Background technology
Concerning communication system, duplexer is significant concerning the transceiver based on frequency division principle.Its performance has important impact to the receipts of an entire system/isolation, selectivity, noise factor, gain, sensitivity.In conventional diplexer circuit, conventionally need to use the T connector that connects receive path filter and transmission channel filter, occupied on the one hand larger area, due to the length of minor matters in T joint, directly affect on the other hand the performance of two passage median filters, therefore needed the long period to be optimized.
It is little, easily and the advantage such as active circuit is integrated, cost is low that substrate integrated waveguide technology has volume compared to metal waveguide, has that radiation is little, loss is low, be suitable for the advantages such as upper frequency application compared to stripline technique.
At present, still lack the T connector that a kind of new structure can make duplexer design discard tradition, for designing the substrate integration wave-guide duplexer of novel miniaturization.
Summary of the invention
The technical problem to be solved in the present invention is, for the defect existing in prior art, provides a kind of improved substrate integration wave-guide duplexer, no longer relies on traditional T connector, makes duplexer area occupied less.
The technical solution adopted for the present invention to solve the technical problems is: a kind of substrate integration wave-guide duplexer is provided, comprise main part and be arranged at the common port joint on described main part, the channel output end that accepts filter, transmitting filtering channel receiving terminal, on described main part, offer the first reception resonant cavity, second and receive resonant cavity, the first transmission cavity, the second transmission cavity and the public resonant cavity of bimodulus;
The described channel output end and described first that accepts filter receives resonant cavity vicinity and arranges and form coupling, and described transmitting filtering channel receiving terminal and described the first transmission cavity vicinity arrange and form coupling; Described the first reception resonant cavity and described second receives resonant cavity vicinity and arranges and form cascade by coupling, described the first transmission cavity and described the second transmission cavity vicinity arrange and form cascade by coupling, described the second reception resonant cavity and described the second transmission cavity arrange and by coupling, form cascade with the public resonant cavity of described bimodulus respectively with the public resonant cavity of described bimodulus is contiguous respectively, and the public resonant cavity of described common port joint and described bimodulus is contiguous to be arranged also in precalculated position formation coupling;
Described first receives resonant cavity, the second reception resonant cavity and the public resonant cavity of described bimodulus is formed for the passage that accepts filter that the signal of described common port joint reception is carried out to filtering, described the first transmission cavity, the second transmission cavity and the public resonant cavity of described bimodulus form the transmitting filtering channel that the signal that described common port joint is sent carries out filtering, and described transmitting filtering channel and described in accept filter passage by the public resonant cavity of bimodulus in different path filters the difference of mode of operation, form isolation mutually.
Preferably, described the second transmission cavity and the public resonant cavity of described bimodulus are intercoupled and are formed cascade by the first coupling slot being arranged on described main part, described the second reception resonant cavity and the public resonant cavity of described bimodulus are intercoupled and are formed cascade by the second coupling slot being arranged on described main part, the public resonant cavity of described bimodulus and described common port joint form coupling by the 3rd coupling slot being arranged on described main part, described first receive resonant cavity with described in the channel output end that accepts filter by the 6th coupling slot being arranged on described main part, form coupling, described the first transmission cavity and described transmitting filtering channel receiving terminal form coupling by the 7th coupling slot being arranged on described main part.
Preferably, described common port joint, described in accept filter channel output end and described transmitting filtering channel receiving terminal be the feed microstrip line of rectangle.
Preferably, the public resonant cavity of described bimodulus is cuboid and partly mutually aims at described the second reception resonant cavity and the second transmission cavity respectively, described the first coupling slot is arranged on described second and receives between the part that resonant cavity aims at mutually with the public resonant cavity of described bimodulus, and described the second coupling slot is arranged between the part that described the second transmission cavity aims at mutually with the public resonant cavity of described bimodulus.
Preferably, described the first reception resonant cavity and second receives resonant cavity and is all cuboid, and described the first reception resonant cavity and second receives resonant cavity and partly mutually aims at, on described main part, also offer for first receiving the 4th coupling slot that resonant cavity and second receives resonant cavity described in cascade, described the 4th coupling slot is opened in described first and receives resonant cavity and second and receive between the part that resonant cavity aims at mutually.
Preferably, described the first transmission cavity and the second transmission cavity are all cuboid, described the first transmission cavity and the second transmission cavity are partly aimed at mutually, on described main part, also offer the 5th coupling slot of penetrating the chamber that shakes for the first transmission cavity described in cascade and the second sending and receiving, described the 5th coupling slot is opened between the part that described the first transmission cavity and the second transmission cavity aim at mutually.
Preferably, described substrate integration wave-guide duplexer comprises successively first medium substrate, described second medium substrate and described the 3rd medium substrate of laminating, described in accept filter and launch filtering channel receiving terminal described in channel output end and described common port joint all adopts silver slurry to be printed in the upper surface of described first medium substrate; Described the 3rd coupling slot, described the 6th coupling slot and described the 7th coupling slot all adopt silver slurry to be printed in the upper surface of described second medium substrate; Described the first coupling slot, described the second coupling slot, described the 4th coupling slot and described the 5th coupling slot all adopt silver slurry to be printed in the upper surface of described the 3rd medium substrate; Lower surface at described the 3rd medium substrate adopts silver slurry to cover completely; Described the first reception resonant cavity, described the first transmission cavity, the public resonant cavity of described bimodulus are all opened in described second medium substrate inside, and described the second reception resonant cavity, described the second transmission cavity are all opened in described the 3rd medium substrate inside.
Substrate integration wave-guide duplexer of the present invention has following beneficial effect: the transmitting filtering channel of substrate integration wave-guide duplexer provided by the invention and the passage that accepts filter share a public resonant cavity of bimodulus, utilize the distribution character of different modes of resonance in the public resonant cavity of bimodulus, appropriately choose the position of the public resonant cavity of this bimodulus and other resonant cavity cascades, thereby form two isolation between path filter.In the present invention, common port joint only need to be compared with the duplexer of employing T junction in a precalculated position and the coupling of the public resonant cavity of bimodulus, has that volume is less, the simpler beneficial effect of structure.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the perspective view of the substrate integration wave-guide duplexer in one embodiment of the invention;
Fig. 2 is the front view of the substrate integration wave-guide duplexer of the present invention in embodiment illustrated in fig. 1;
Fig. 3 shows the electric field rough schematic accepting filter under channel frequence at the public resonant cavity of simulation bimodulus;
Fig. 4 shows the electric field rough schematic under transmitting filtering channel frequency at the public resonant cavity of simulation bimodulus.
Embodiment
For technical characterictic of the present invention, object and effect being had more clearly, understand, now contrast accompanying drawing and describe the specific embodiment of the present invention in detail.
Fig. 1 shows the substrate integration wave-guide duplexer in one embodiment of the invention, comprise and be roughly rectangular-shaped main part and be arranged at the common port joint 80 on main part, the channel output end 10 that accepts filter, transmitting filtering channel receiving terminal 40, on main part, offer the first reception resonant cavity 20, second and receive resonant cavity 30, the first transmission cavity 50, the second transmission cavity 60 and the public resonant cavity 70 of bimodulus.
The channel output end 10 and described first that accepts filter receives resonant cavity 20 and is close to and forms coupling, and transmitting filtering channel receiving terminal 40 and the first transmission cavity 50 vicinities arrange and form coupling; The first reception resonant cavity 20 and second receives resonant cavity 30 vicinities and arranges and form cascade by coupling, the first transmission cavity 50 and the second transmission cavity 60 vicinities arrange and form cascade by coupling, the second reception resonant cavity 30 and the second transmission cavity 60 arrange with public resonant cavity 70 vicinities of bimodulus respectively and in precalculated position, coupling forms cascade with the public resonant cavity 70 of bimodulus respectively, and public resonant cavity 70 vicinities of common port joint 80 and described bimodulus arrange and also in precalculated position, form coupling.
First receives resonant cavity 20, the second mode of resonance receiving in resonant cavity 30 and the public resonant cavity 70 of bimodulus is formed for the passage that accepts filter that the signal of common port joint 80 receptions is carried out to filtering jointly, the first transmission cavity 50, another mode of resonance in the public resonant cavity 70 of the second transmission cavity 60 and bimodulus forms jointly to the signal that will send by common port joint 80 being carried out to the transmitting filtering channel of filtering, transmitting filtering channel and described in accept filter passage by the public resonant cavity of bimodulus in different path filters the difference of mode of operation, form isolation mutually.
In prior art, common port joint 80 need to adopt T junction to come to be coupled with the resonant cavity of emission filter and receiving filter respectively, and is connected with antenna.Because the present invention is used for forming by public resonant cavity 70 conducts of bimodulus accept filter passage and the public resonant cavity of launching filtering channel.Employing the present invention can be so that common port joint 80 need not adopt T junction, and 80 needs of this common port joint are coupled in precalculated position and the public resonant cavity 70 of bimodulus.It has the beneficial effect that structure is simpler, volume is less.
Understandably, as required, first receives that resonant cavity 20 and second receives between resonant cavity 30 can also one of cascade or more than one resonant cavity, first receive resonant cavity 20 and second receive resonant cavity 30 by between one or more resonant cavity cascade to reach better filter effect.The first transmission cavity 50 and the second transmitting shake between chamber 60 can also cascade as one or more than one resonant cavity, the first transmission cavity 50 and the second transmission cavity 60 by between one or more resonant cavity cascade to reach better filter effect.
In the present embodiment, the main part of this substrate integration wave-guide duplexer comprises first medium substrate 1, second medium substrate 2 and the 3rd medium substrate 3 of laminating successively.It is 0.1mm that first medium substrate 1 adopts a thickness, and the LTCC tape casting diaphragm that dielectric constant is 5.9 is made.It is 0.1mm that second medium substrate 22 adopts four thickness, and the LTCC tape casting diaphragm lamination that dielectric constant is 5.9 forms.It is 0.1mm that the 3rd medium substrate 33 adopts four thickness, and the LTCC tape casting diaphragm lamination that dielectric constant is 5.9 forms.
In the present invention, each resonant cavity in this substrate integration wave-guide duplexer, as sent out the first reception resonant cavity 20, the second reception resonant cavity 30, the first transmission cavity 50, the second transmission cavity 60 and the public resonant cavity 70 of bimodulus, be all based on substrate integrated waveguide technology, the plated-through hole of arranging with rectangle and the metal level of medium upper and lower surface surround cuboid cavity.Cavity size except public resonant cavity, selection makes the resonance frequency of the TE101 pattern of cavity equal corresponding emission filter or receiving filter centre frequency.The size of the public resonant cavity of bimodulus, selects to make the accept filter centre frequency of passage of the resonance frequency correspondence of the TE102 pattern of cavity, makes the centre frequency of the corresponding transmitting of resonance frequency filtering channel of the TE103 pattern of cavity.
First receives the inside that resonant cavity 20, the first transmission cavity 50 and the public resonant cavity 70 of bimodulus are arranged on second medium substrate 2.The first reception resonant cavity 20 and the first transmission cavity 50 are opened in the inside of second medium substrate 2 and are separately positioned on the both sides that are positioned at the public resonant cavity 70 of this bimodulus.The second reception substrate integration wave-guide resonant cavity 30 and the second transmitting substrate integrated wave guide resonance chamber 60 are all rectangular-shaped and are opened in the 3rd medium substrate 3 inside.The second reception resonant cavity 30 and the second transmission cavity 60 are partly aimed at mutually.
The first reception resonant cavity 20 and second receives resonant cavity 30 and is all cuboid, and the first reception resonant cavity 20 and second receives resonant cavity 30 and partly mutually aims at, on main part, also offer for cascade the first reception resonant cavity 20 and the second the 4th coupling slot 23, the four coupling slots 23 that receive resonant cavity 30 and be opened between the first reception resonant cavity 20 and the mutual part of aiming at of the second reception resonant cavity 30.
The first transmission cavity 50 and the second transmission cavity 60 are all cuboid, the first transmission cavity 50 and the second transmission cavity 60 are partly aimed at mutually, on main part, also offering the 5th coupling slot 56, the five coupling slots 56 of penetrating the chamber 60 that shakes for cascade the first transmission cavity 50 and the second sending and receiving is opened between the part that the first transmission cavity 50 and the second transmission cavity 60 aim at mutually.
The public resonant cavity 70 of bimodulus is cuboid and partly mutually aims at the second reception resonant cavity 30 and the second transmission cavity 60 respectively, the first coupling slot 37 be arranged on the second reception resonant cavity 30 and the public resonant cavity 70 of bimodulus over against mutual part of aiming between, the second coupling slot 67 is arranged between the part that the second transmission cavity 60 aims at mutually with the public resonant cavity 70 of bimodulus.
Accept filter channel output end 10 and transmitting filtering channel input 40 also for being printed on the feed microstrip line of the rectangle of first medium substrate 1 upper surface correspondence position.The channel output end 10 that accepts filter connects resonant cavity 20 and the first transmitter and receiver coupling 50 by the 6th coupling slot 12 and the 7th coupling slot 45 and first being arranged on main part respectively with transmitting filtering channel receiving terminal 40.
The first coupling slot 37, the second coupling slot 67 and the 3rd coupling slot 78 must be chosen to be at suitable position, thereby can encourage respectively two modes of resonance in public resonant cavity to connect two filtering channels on the one hand, realize on the other hand the isolation to two filtering channels simultaneously.We have provided the public resonant cavity 70 of bimodulus and in computer software, have simulated respectively the electric field line chart under preset frequency, as shown in Figures 2 and 3.When the public resonant cavity 70 of this bimodulus is operated in, accept filter under channel frequence, electric field at a-quadrant place is very weak or almost do not have; And be operated under transmission channel frequency filtering when the public resonant cavity 70 of this bimodulus, very weak or almost do not have at the electric field of B location; Under two kinds of channel frequences, the field intensity in C region is all very strong.Therefore, by the second transmission cavity 60 and the public resonant cavity 70 of bimodulus in a-quadrant cascade, the second coupling slot 67 is arranged on a-quadrant, by the second reception resonant cavity 30 and the public resonant cavity of bimodulus 70 chambeies in the cascade of B region, the first coupling slot 37 is arranged on B region, can realize on the one hand the excitation to two kinds of channel frequences in public resonant cavity, realize on the other hand the isolation between these two kinds of channel frequences.The public resonant cavity 70 of common port joint 80 and bimodulus is in the coupling of C region, and the 3rd coupling slot 78 is arranged on C region, can realize the energy of two channel frequences is all realized to coupling.Certainly the figure of Fig. 2 and Fig. 3 just simply shows the electric field intensity map under a certain frequency, and when frequency changes, electric field intensity map also can correspondingly change.
By reference to the accompanying drawings embodiments of the invention are described above; but the present invention is not limited to above-mentioned embodiment; above-mentioned embodiment is only schematic; rather than restrictive; those of ordinary skill in the art is under enlightenment of the present invention; not departing from the scope situation that aim of the present invention and claim protect, also can make a lot of forms, within these all belong to protection of the present invention.
Claims (7)
1. a substrate integration wave-guide duplexer, it is characterized in that, comprise main part and be arranged at the common port joint (80) on described main part, the channel output end that accepts filter (10), transmitting filtering channel receiving terminal (40), on described main part, offer the first reception resonant cavity (20), second and receive resonant cavity (30), the first transmission cavity (50), the second transmission cavity (60) and the public resonant cavity of bimodulus (70);
The described channel output end that accepts filter (10) and described first receives resonant cavity (20) vicinity and arranges and form coupling, and described transmitting filtering channel receiving terminal (40) arranges and form coupling with described the first transmission cavity (50) vicinity, described first receives resonant cavity (20) arranges and forms cascade by coupling with described the second reception resonant cavity (30) is contiguous, described the first transmission cavity (50) arranges and forms cascade by coupling with described the second transmission cavity (60) is contiguous, described the second reception resonant cavity (30) and described the second transmission cavity (60) arrange and by coupling, form cascade with the public resonant cavity of described bimodulus (70) respectively with the public resonant cavity of described bimodulus (70) is contiguous respectively, described common port joint (80) arranges and forms and be coupled in precalculated position with the public resonant cavity of described bimodulus (70) is contiguous,
Described first receives resonant cavity (20), the passage that accepts filter that the signal that the second reception resonant cavity (30) and the public resonant cavity of described bimodulus (70) are formed for that described common port joint (80) is received carries out filtering, described the first transmission cavity (50), the second transmission cavity (60) and the public resonant cavity of described bimodulus (70) form the signal sending by described common port joint (80) being carried out to the transmitting filtering channel of filtering, and described transmitting filtering channel and described in accept filter passage by the public resonant cavity of bimodulus in different path filters the difference of mode of operation, form isolation mutually.
2. substrate integration wave-guide duplexer according to claim 1, it is characterized in that, described the second transmission cavity (60) is intercoupled and is formed cascade by the first coupling slot (37) being arranged on described main part with the public resonant cavity of described bimodulus (70), described second receives resonant cavity (30) is intercoupled and is formed cascade by the second coupling slot (67) being arranged on described main part with the public resonant cavity of described bimodulus (70), the public resonant cavity of described bimodulus (70) forms coupling with described common port joint (80) by the 3rd coupling slot (78) being arranged on described main part, described first receive resonant cavity (20) with described in the channel output end (10) that accepts filter by the 6th coupling slot (12) being arranged on described main part, form coupling, described the first transmission cavity (50) forms coupling with described transmitting filtering channel receiving terminal (40) by the 7th coupling slot (45) being arranged on described main part.
3. substrate integration wave-guide duplexer according to claim 1, is characterized in that, described common port joint (80), described in accept filter channel output end (10) and described transmitting filtering channel receiving terminal (40) be the feed microstrip line of rectangle.
4. substrate integration wave-guide duplexer according to claim 1, it is characterized in that, the public resonant cavity of described bimodulus (70) is cuboid and partly mutually aims at described the second reception resonant cavity (30) and the second transmission cavity (60) respectively, described the first coupling slot (37) is arranged on described second and receives between the part that resonant cavity (30) aims at mutually with the public resonant cavity of described bimodulus (70), and described the second coupling slot (67) is arranged between the part that described the second transmission cavity (60) aims at mutually with the public resonant cavity of described bimodulus (70).
5. substrate integration wave-guide duplexer according to claim 4, it is characterized in that, described the first reception resonant cavity (20) and second receives resonant cavity (30) and is all cuboid, and described the first reception resonant cavity (20) and second receives resonant cavity (30) and partly mutually aims at, on described main part, also offer the 4th coupling slot (23) that receives resonant cavity (30) for the first reception resonant cavity (20) and second described in cascade, described the 4th coupling slot (23) is opened in described first and receives between resonant cavity (20) and the mutual part of aiming at of the second reception resonant cavity (30).
6. substrate integration wave-guide duplexer according to claim 5, it is characterized in that, described the first transmission cavity (50) and the second transmission cavity (60) are all cuboid, described the first transmission cavity (50) and the second transmission cavity (60) are partly aimed at mutually, on described main part, also offer the 5th coupling slot (56) of penetrating the chamber that shakes (60) for the first transmission cavity (50) and the second sending and receiving described in cascade, described the 5th coupling slot (56) is opened between described the first transmission cavity (50) and the mutual part of aiming at of the second transmission cavity (60).
7. substrate integration wave-guide duplexer according to claim 6, it is characterized in that, described waveguide duplexer comprises successively first medium substrate (1), described second medium substrate (2) and described the 3rd medium substrate (3) of laminating, described in accept filter channel output end (10), described transmitting filtering channel receiving terminal (40) and described common port joint (80) all adopts silver to starch to be printed on the upper surface of described first medium substrate (1); Described the 3rd coupling slot (78), described the 6th coupling slot (12) and described the 7th coupling slot (45) all adopt silver slurry to be printed on the upper surface of described second medium substrate (2); Described the first coupling slot (37), described the second coupling slot (67), described the 4th coupling slot (23) and described the 5th coupling slot (56) all adopt silver slurry to be printed on the upper surface of described the 3rd medium substrate (3); Lower surface at described the 3rd medium substrate (3) adopts silver slurry to cover completely; Described the first reception resonant cavity (20), described the first transmission cavity (50), the public resonant cavity of described bimodulus (70) are all opened in described second medium substrate (2) inside, and described the second reception resonant cavity (30), described the second transmission cavity (60) are all opened in described the 3rd medium substrate (3) inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310498569.0A CN103531868A (en) | 2013-10-22 | 2013-10-22 | Substrate integration waveguide duplexer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310498569.0A CN103531868A (en) | 2013-10-22 | 2013-10-22 | Substrate integration waveguide duplexer |
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| CN103531868A true CN103531868A (en) | 2014-01-22 |
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| CN201310498569.0A Pending CN103531868A (en) | 2013-10-22 | 2013-10-22 | Substrate integration waveguide duplexer |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107834137A (en) * | 2017-12-11 | 2018-03-23 | 华中科技大学 | A kind of duplexer and transmit-receive sharing millimeter wave array antenna |
| CN110574224A (en) * | 2017-04-28 | 2019-12-13 | 株式会社藤仓 | Duplexer and multiplexer |
| CN110808440A (en) * | 2019-11-12 | 2020-02-18 | 深圳市国人射频通信有限公司 | Dielectric waveguide duplexer |
| CN111326835A (en) * | 2020-02-28 | 2020-06-23 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Three-dimensional stacked SIW duplexer |
| US11189897B2 (en) | 2017-04-28 | 2021-11-30 | Fujikura Ltd. | Filter |
-
2013
- 2013-10-22 CN CN201310498569.0A patent/CN103531868A/en active Pending
Non-Patent Citations (3)
| Title |
|---|
| H. CHU，Y.X. GUO，X.Q. SHI: "60 GHz LTCC 3D cavity bandpass filter with two finite transmission zeros", 《ELECTRONICS LETTERS》 * |
| H. CHU，Y.X. GUO，Y.L. SONG，Z.L. WANG: "40/50 GHz diplexer design in LTCC", 《ELECTRONICS LETTERS》 * |
| 褚慧: "毫米波无源器件及天线若干问题研究", 《中国博士学位论文全文数据库信息科技辑》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110574224A (en) * | 2017-04-28 | 2019-12-13 | 株式会社藤仓 | Duplexer and multiplexer |
| US11121695B2 (en) | 2017-04-28 | 2021-09-14 | Fujikura Ltd. | Diplexer and multiplexer |
| US11189897B2 (en) | 2017-04-28 | 2021-11-30 | Fujikura Ltd. | Filter |
| CN107834137A (en) * | 2017-12-11 | 2018-03-23 | 华中科技大学 | A kind of duplexer and transmit-receive sharing millimeter wave array antenna |
| CN107834137B (en) * | 2017-12-11 | 2020-09-08 | 华中科技大学 | Duplexer and transceiving shared millimeter wave array antenna |
| CN110808440A (en) * | 2019-11-12 | 2020-02-18 | 深圳市国人射频通信有限公司 | Dielectric waveguide duplexer |
| CN111326835A (en) * | 2020-02-28 | 2020-06-23 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Three-dimensional stacked SIW duplexer |
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Application publication date: 20140122 |