CN204761403U - Novel coupler circuit - Google Patents
Novel coupler circuit Download PDFInfo
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- CN204761403U CN204761403U CN201520601013.4U CN201520601013U CN204761403U CN 204761403 U CN204761403 U CN 204761403U CN 201520601013 U CN201520601013 U CN 201520601013U CN 204761403 U CN204761403 U CN 204761403U
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- electric capacity
- coupling inductance
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Abstract
The utility model discloses a novel coupler circuit, this circuit structure be by four ports (Port1-Port4), two couples of coupling inductance and nine adjustable electric capacity C1, C2,. C9 realizes. The utility model discloses can be widely used in the places strict to signal performance such as WCDMA mobile communication system, radar antenna and RFID transceivers. Can realize transmission, isolation and the switching -over etc. Of signal. Simultaneously, compare the coupler circuit of other structures, the utility model discloses can realize that the coupler is adjustable to can apply to in the different frequency channel of communication system.
Description
Technical field
The utility model relates to coupler circuit, belongs to communication and electronic application field, has important application especially in radio circuit.
Background technology
In the last few years, a series of research about filter circuit had been carried out both at home and abroad.Achieve a lot of achievement in research, be especially used in mobile communication technology, be used in power-amplifier front-end and radar antenna feed part, filter circuit effectively can solve the large problem of system passband external noise.But its project organization can only use in specific frequency range, and bandwidth is less, make system bulk comparatively large, and versatility is not strong.Simultaneously traditional coupler circuit is due to the problem of its circuit structure, and make temperature sensitivity extremely strong, applicability is very limited.The utility model, for above problem, can effectively solve, and to meet system requirements, and stability is high, volume is little, compact conformation, processing are simple, applied widely.
Summary of the invention
The utility model provides a kind of and has the coupler circuit that structure is simple, volume is little, stability is high.
The technical scheme realizing the utility model object is: a kind of novel coupler circuit, comprise four ports (Port1 ~ Port4), two pairs of coupling inductances and nine tunable capacitor C1, C2 ... C9 realizes, wherein, port one (Port1) is connected with node 1; Port 2 (Port2) is connected with node 2; Port 3 (Port3) is connected with node 5; Port 4 (Port4) is connected with node 6; One end of electric capacity C1 is connected with node 1, and the other end is connected to the ground and connects; One end of electric capacity C2 is connected with node 1, and the other end is connected with node 2; One end of electric capacity C3 is connected with node 3, and the other end is connected to the ground and connects; 1 end of coupling inductance L1, L2 is connected with node 1, and 2 ends of coupling inductance L1, L2 are connected with node 2, and 3 ends of coupling inductance L1, L2 are connected with node 3, and 4 ends of coupling inductance L1, L2 are connected with node 4; One end of electric capacity C4 is connected with node 3, and the other end is connected to the ground and connects; One end of electric capacity C5 is connected with node 3, and the other end is connected with node 4; One end of electric capacity C6 is connected with node 4, and the other end is connected to the ground and connects; 1 end of coupling inductance L3, L4 is connected with node 3, and 2 ends of coupling inductance L3, L4 are connected with node 4, and 3 ends of coupling inductance L3, L4 are connected with node 5, and 4 ends of coupling inductance L3, L4 are connected with node 6; One end of electric capacity C7 is connected with node 5, and the other end is connected to the ground and connects; One end of electric capacity C8 is connected with node 5, and the other end is connected with node 6; One end of electric capacity C9 is connected with node 6, and the other end is connected to the ground and connects; Port Port1 ~ Port4 all connects 50 ohmages.
Compared with prior art, the utility model provides the feature that a kind of structure is simple, multiband, compact conformation, stability are high.
Accompanying drawing explanation
Fig. 1 is a kind of novel coupler circuit schematic diagram of the utility model.
Fig. 2 is a kind of novel coupler circuit S parameter amplitude-frequency characteristic response of the utility model.
Fig. 3 is a kind of novel coupler circuit S parameter phase-frequency characteristic response of the utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Composition graphs 1, the utility model is a kind of coupler circuit, comprises four ports (Port1 ~ Port4), two pairs of coupling inductances and nine tunable capacitor C1, C2 ... C9 realizes, and wherein, port one (Port1) is connected with node 1; Port 2 (Port2) is connected with node 2; Port 3 (Port3) is connected with node 5; Port 4 (Port4) is connected with node 6; One end of electric capacity C1 is connected with node 1, and the other end is connected to the ground and connects; One end of electric capacity C2 is connected with node 1, and the other end is connected with node 2; One end of electric capacity C3 is connected with node 3, and the other end is connected to the ground and connects; 1 end of coupling inductance L1, L2 is connected with node 1, and 2 ends of coupling inductance L1, L2 are connected with node 2, and 3 ends of coupling inductance L1, L2 are connected with node 3, and 4 ends of coupling inductance L1, L2 are connected with node 4; One end of electric capacity C4 is connected with node 3, and the other end is connected to the ground and connects; One end of electric capacity C5 is connected with node 3, and the other end is connected with node 4; One end of electric capacity C6 is connected with node 4, and the other end is connected to the ground and connects; 1 end of coupling inductance L3, L4 is connected with node 3, and 2 ends of coupling inductance L3, L4 are connected with node 4, and 3 ends of coupling inductance L3, L4 are connected with node 5, and 4 ends of coupling inductance L3, L4 are connected with node 6; One end of electric capacity C7 is connected with node 5, and the other end is connected to the ground and connects; One end of electric capacity C8 is connected with node 5, and the other end is connected with node 6; One end of electric capacity C9 is connected with node 6, and the other end is connected to the ground and connects; Port Port1 ~ Port4 all connects 50 ohmages.
Work as inductance, when capacitance parameter is fixed, coupler can obtain the response of its S parameter and phase-frequency characteristic is distinguished as shown in Figure 2 and Figure 3, and coupler can be on a single die integrated with RFID reader transceiver.
This novel coupler can be applicable in RFID reader transceiver, result is used to show that this device has good degree of suppression to channel receiver pulse and noise level, effectively realize transmission and the buffer action of signal, overcome the problem adopting conventional coupler volume excessive, can ensure that device obtains best channel signal transmission, commutation and isolation effect.
Claims (1)
1. a novel coupler circuit, is characterized in that: comprise four ports (Port1 ~ Port4), two pairs of coupling inductances and nine tunable capacitor C1, C2 ... C9 realizes, and wherein, port one (Port1) is connected with node 1; Port 2 (Port2) is connected with node 2; Port 3 (Port3) is connected with node 5; Port 4 (Port4) is connected with node 6; One end of electric capacity C1 is connected with node 1, and the other end is connected to the ground and connects; One end of electric capacity C2 is connected with node 1, and the other end is connected with node 2; One end of electric capacity C3 is connected with node 3, and the other end is connected to the ground and connects; 1 end of coupling inductance L1, L2 is connected with node 1, and 2 ends of coupling inductance L1, L2 are connected with node 2, and 3 ends of coupling inductance L1, L2 are connected with node 3, and 4 ends of coupling inductance L1, L2 are connected with node 4; One end of electric capacity C4 is connected with node 3, and the other end is connected to the ground and connects; One end of electric capacity C5 is connected with node 3, and the other end is connected with node 4; One end of electric capacity C6 is connected with node 4, and the other end is connected to the ground and connects; 1 end of coupling inductance L3, L4 is connected with node 3, and 2 ends of coupling inductance L3, L4 are connected with node 4, and 3 ends of coupling inductance L3, L4 are connected with node 5, and 4 ends of coupling inductance L3, L4 are connected with node 6; One end of electric capacity C7 is connected with node 5, and the other end is connected to the ground and connects; One end of electric capacity C8 is connected with node 5, and the other end is connected with node 6; One end of electric capacity C9 is connected with node 6, and the other end is connected to the ground and connects; Port Port1 ~ Port4 all connects 50 ohmages.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520601013.4U CN204761403U (en) | 2015-08-12 | 2015-08-12 | Novel coupler circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520601013.4U CN204761403U (en) | 2015-08-12 | 2015-08-12 | Novel coupler circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204761403U true CN204761403U (en) | 2015-11-11 |
Family
ID=54476070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520601013.4U Expired - Fee Related CN204761403U (en) | 2015-08-12 | 2015-08-12 | Novel coupler circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204761403U (en) |
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2015
- 2015-08-12 CN CN201520601013.4U patent/CN204761403U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151111 Termination date: 20160812 |