CN201387929Y - Dual-mode diplexer - Google Patents
Dual-mode diplexer Download PDFInfo
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- CN201387929Y CN201387929Y CN 200920080098 CN200920080098U CN201387929Y CN 201387929 Y CN201387929 Y CN 201387929Y CN 200920080098 CN200920080098 CN 200920080098 CN 200920080098 U CN200920080098 U CN 200920080098U CN 201387929 Y CN201387929 Y CN 201387929Y
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- resonant cavity
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Abstract
The utility model discloses a dual-mode diplexer which consists of a public input structure and two same links connected with the public input structure. Each link consists of at least two resonant cavities and at least two coupling structures. In each link, the resonant cavities and the coupling structures are alternately connected; and the public input structure is directly connected with one coupling structure in each link. The resonant cavity is preferably to be a rectangle dual-mode resonant cavity. The two coupling structures on each resonant cavity are all arranged near two neighboring vertex angles of the resonant cavity, and can be respectively arranged on the same side, two opposite sides or two neighboring sides of the resonant cavity. The dual-mode diplexer is flexibly designed, can design the positions of the coupling structures according to the actual demands, has simple structure, is convenient to be processed and debugged, has the advantages of low insertion loss and high insulation, and is mainly applied to the electronic systems of each microwave band, in particular to the fields like radar, communication, missile guidance and the like.
Description
Technical field
The utility model relates to a kind of double-mode duplexer, specifically, relates to a kind of duplexer that comprises the bimodulus resonant cavity.
Background technology
Duplexer background: in microwave, millimeter-wave communication system, realize that with common antenna transmission duplex receives and emission, normally isolate two different channels and adopt duplexer with duplexer in order only to reach.Duplexer is a kind of three port filter devices, plays frequency division and isolates the effect of the reception and the passage that transmits, and be key device commonly used in the radio communication.Duplexer is formed by connecting by two filters.Because the filter of a passage can be introduced bigger reactance in the passband of the filter of another passage in the duplexer, destroyed the original pass-band performance of filter, not not matching of the impedance that influencing each other between the direct-connected filter can be caused common port, thus the transmission characteristic in the passage is degenerated.The way that addresses this problem is to optimize the component parameters of duplexer again to reach our requirement, and therefore, it is much bigger that the design of duplexer and two port Filter Design are compared difficulty.
Circular waveguide dual mode filter background: the multi-mode filter in the elliptic function filter, a cavity can transmit a plurality of patterns, and one of them pattern is equivalent to a chamber of single mode.Two mode of operations are arranged in the double mould cavity, be equivalent to two one-mode cavities.And the generation transmission zero that can intercouple of two patterns in double mould cavity.So replace single chamber to constitute dual mode filter with double mould cavity, the volume of filter is dwindled greatly.
But, traditional dual-mode waveguide filter utilization be the cylindrical waveguide resonant cavity mostly, accurately the difficulty of processing is higher, and.For Mode Coupling and the tuning needs of working band, usually need many screws (coupling screw and tuning screw), make cavity the decline of Q value and further increased the processing and debugging difficulty.Thereby the difficulty of processing of duplexer is increased more.
Adopt the circular waveguide dual mode filter to constitute duplexer, complex structure need be divided into mass part processing and accurately assembling and debugging.Present this duplexer is used seldom.
The utility model content
The purpose of this utility model provides a kind of double-mode duplexer, to overcome problems of the prior art.
To achieve these goals, the technical solution adopted in the utility model is:
Double-mode duplexer, it is characterized in that, two links that described double-mode duplexer links to each other by public input structure and with public input structure are formed, the composition structure of described two links is identical, every link all is made up of with two coupled structures that link to each other with this resonant cavity two resonant cavitys at least, and the resonant cavity in every link alternately is connected with coupled structure, public input structure then directly and a coupled structure in every link link to each other.
Described resonant cavity is single mode resonant cavity or bimodulus resonant cavity, and to have a resonant cavity at least in every link be the bimodulus resonant cavity.
Described resonant cavity is a cuboid.
Near two coupled structures that link to each other with each resonant cavity are positioned on two adjacent on resonant cavity drift angles.
Two coupled structures that link to each other with each resonant cavity are positioned on two adjacent on resonant cavity sides.
Two coupled structures that link to each other with each resonant cavity are positioned on two relative on resonant cavity sides.
Two coupled structures that link to each other with each resonant cavity are positioned on the same side on the resonant cavity.
The upper surface of described public input structure, resonant cavity and coupled structure is in same plane.
Principle of the present utility model: utilize coupled structure to connect resonant cavity and constitute filter, the filter that comprises resonant cavity is connected into duplexer with public input structure, there is two mode of operations resonance simultaneously in band connection frequency at duplexer, thereby make the performance of duplexer better, design and processing are more prone to.
Resonant cavity can be selected single mode resonant cavity or bimodulus resonant cavity for use, with the bimodulus resonant cavity is good, and can comprise one or more bimodulus resonant cavitys in a double-mode duplexer, utilize the characteristic of bimodulus resonant cavity, can reduce the accurately difficulty of processing of duplexer, increase the Q value of duplexer, thereby the design of rectangular bimodule filter and processing are more prone to.Two mode of operations are arranged in the double mould cavity, be equivalent to two one-mode cavities.And the generation transmission zero that can intercouple of two patterns in double mould cavity.So replace single chamber to constitute dual mode filter with double mould cavity, the volume of filter is dwindled greatly.
Description of drawings
Fig. 1 is the structural representation vertical view of the utility model-embodiment 1.
Fig. 2 is the structural representation vertical view of the utility model-embodiment 2.
Fig. 3 is a collision matrix parameter schematic diagram among the utility model-embodiment 1.
Fig. 4 is a collision matrix parameter schematic diagram among the utility model-embodiment 2.
Embodiment
Embodiment 1
As shown in Figure 1, double-mode duplexer, it is characterized in that, described double-mode duplexer is made up of with two identical links that link to each other with public input structure public input structure 1, described two links are formed by three resonant cavitys 2 and four coupled structures 3, public input structure 1 directly links to each other with coupled structure 3, and resonant cavity 2 then alternately is connected with coupled structure 3.
Described resonant cavity 2 is the bimodulus rectangular cavity.
Two coupled structures 3 that link to each other with each resonant cavity 2 are positioned on two adjacent on resonant cavity drift angles, and are positioned on the relative side of resonant cavity 2.
Described coupled structure resonant cavity alternately connects.
The upper surface of described public input structure 1, resonant cavity 2 and coupled structure 3 is in same plane.
Fig. 3 is a kind of collision matrix parameter schematic diagram that calculates of present embodiment, and its index is as follows:
Pass band width: 70MHz;
TX end: centre frequency: 8307MHz;
RX end: centre frequency: 8426MHz;
Return loss: greater than 18dB; Transmitting-receiving is isolated: greater than 95dB.
As shown in Figure 2, double-mode duplexer, it is characterized in that, described double-mode duplexer is made up of with two identical links that link to each other with public input structure public input structure 1, described two links are formed by four resonant cavitys 2 and five coupled structures 3, public input structure 1 directly links to each other with coupled structure 3, and resonant cavity 2 then alternately is connected with coupled structure 3.
Described resonant cavity 2 is the bimodulus rectangular cavity, and 2 one-tenth rectangles of four resonant cavitys are divided into two rows and are provided with.
Two coupled structures 3 that link to each other with each resonant cavity 2 are positioned on two adjacent on resonant cavity drift angles, and are positioned on two adjacent sides of resonant cavity 2, two coupled structures on the same resonant cavity axially vertical mutually.
The upper surface of described public input structure 1, resonant cavity 2 and coupled structure 3 is in same plane.
Fig. 4 is a kind of collision matrix parameter schematic diagram that calculates of present embodiment, and its index is as follows:
Pass band width: 120MHz;
TX end: centre frequency: 12863MHz;
RX end: centre frequency: 13129MHz;
Return loss: greater than 18dB; Transmitting-receiving is isolated: greater than 118dB.
Embodiment 1 and embodiment 2 because the rectangle that is shaped as rule of resonant cavity implements more convenient, are more excellent scheme of the present utility model.The shape in the cross section of resonant cavity and horizontal plane can be other Any shape also, includes but not limited to circle, ellipse, polygon.
Claims (8)
1. double-mode duplexer, it is characterized in that, described double-mode duplexer is made up of public input structure (1) and two links linking to each other with public input structure (1), every link all is made up of with two coupled structures (3) that link to each other with this resonant cavity (2) two resonant cavitys (2) at least, and the resonant cavity (2) in every link alternately is connected with coupled structure (3), public input structure (1) then directly and the coupled structure (3) in every link link to each other.
2. double-mode duplexer according to claim 1 is characterized in that, described resonant cavity (2) is single mode resonant cavity or bimodulus resonant cavity, and to have a resonant cavity at least in every link be the bimodulus resonant cavity.
3. double-mode duplexer according to claim 1 and 2 is characterized in that, described resonant cavity (2) is a cuboid.
4. double-mode duplexer according to claim 3 is characterized in that, near two coupled structures that link to each other with each resonant cavity (2) are positioned on two adjacent on resonant cavity drift angles.
5. double-mode duplexer according to claim 4 is characterized in that, two coupled structures that link to each other with each resonant cavity (2) are positioned on two adjacent on resonant cavity sides.
6. double-mode duplexer according to claim 4 is characterized in that, two coupled structures that link to each other with each resonant cavity (2) are positioned on two relative on resonant cavity sides.
7. double-mode duplexer according to claim 4 is characterized in that, two coupled structures that link to each other with each resonant cavity (2) are positioned on the same side on the resonant cavity.
8. double-mode duplexer according to claim 1 is characterized in that, the upper surface of described public input structure (1), resonant cavity (2) and coupled structure (3) is in same plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920080098 CN201387929Y (en) | 2009-04-09 | 2009-04-09 | Dual-mode diplexer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920080098 CN201387929Y (en) | 2009-04-09 | 2009-04-09 | Dual-mode diplexer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201387929Y true CN201387929Y (en) | 2010-01-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200920080098 Expired - Lifetime CN201387929Y (en) | 2009-04-09 | 2009-04-09 | Dual-mode diplexer |
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| CN (1) | CN201387929Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101521305B (en) * | 2009-04-09 | 2012-11-07 | 成都赛纳赛德科技有限公司 | Double-mode duplexer |
-
2009
- 2009-04-09 CN CN 200920080098 patent/CN201387929Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101521305B (en) * | 2009-04-09 | 2012-11-07 | 成都赛纳赛德科技有限公司 | Double-mode duplexer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100120 Effective date of abandoning: 20090409 |
|
| RGAV | Abandon patent right to avoid regrant |