CN204442304U - A kind of novel coupler circuit - Google Patents
A kind of novel coupler circuit Download PDFInfo
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- CN204442304U CN204442304U CN201520159817.3U CN201520159817U CN204442304U CN 204442304 U CN204442304 U CN 204442304U CN 201520159817 U CN201520159817 U CN 201520159817U CN 204442304 U CN204442304 U CN 204442304U
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Abstract
The utility model discloses a kind of novel coupler circuit, this circuit structure is by four ports (1 ~ 4), eight inductance L 1, L2 ... L8 and three inductance L 9, L10, L11 and four tunable capacitors C1, C2, C3, C4 realize, wherein eight inductance L 1, L2 ... L8 and three inductance L 9, L10, L11 form Crossed Circle loop.The utility model can be widely used in WCDMA mobile communication system, radar antenna and RFID transceiver etc. to the strict place of signal performance requirement.The transmission of signal, isolation and commutation etc. can be realized.Compare the coupler circuit of other structures, it is adjustable that the utility model can realize coupler, and can apply in the different frequency range of communication system.
Description
Technical field
The utility model relates to coupler, particularly a kind of 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 coupling 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, coupling 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 adjustable, that structure is simple, volume is little, stability is high coupler circuit.
The technical scheme realizing the utility model object is: a kind of novel coupler circuit, comprises four ports (1 ~ 4), eight inductance L 1, L2 ... L8 and three inductance L 9, L10, L11 and four tunable capacitors C1, C2, C3, C4; Wherein, port one is connected with node 1; Port 2 is connected with node 5; Port 3 is connected with node 10; Port 4 is connected with node 6; The indirect inductance L 1 of node 1 and node 2; The indirect inductance L 2 of node 2 and node 3; The indirect inductance L 3 of node 3 and node 4; The indirect inductance L 4 of node 4 and node 5; The indirect inductance L 5 of node 6 and node 7; The indirect inductance L 6 of node 7 and node 8; The indirect inductance L 7 of node 8 and node 9; The indirect inductance L 8 of node 9 and node 10; The indirect inductance L 9 of node 1 and node 6; The indirect inductance L 10 of node 3 and node 8; The indirect inductance L 11 of node 5 and node 10; Node 2 is connected to the ground by tunable capacitor C1 and connects in addition; Node 4 is connected to the ground by tunable capacitor C2 and connects; Node 7 is connected to the ground by tunable capacitor C3 and connects; Node 9 is connected to the ground by tunable capacitor C4 and connects; Port one ~ 4 all connect 50 ohmages.This circuit structure is realized by inductance, tunable capacitor, and electric capacity all adopts tunable capacitor, eight inductance L 1, L2 ... L8 and three inductance L 9, L10, L11 form Crossed Circle loop, can be applied in different frequency ranges.
Compared with prior art, the utility model provides the feature that a kind of adjustable, structure is simple, multiband, compact conformation, stability are high.
Accompanying drawing explanation
Fig. 1 is a kind of novel coupler circuit of the utility model.
Fig. 2 is a kind of novel coupler circuit S parameter 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, comprise four ports (1 ~ 4), eight inductance L 1, L2 ... L8 and three inductance L 9, L10, L11 and four tunable capacitors C1, C2, C3, C4; Wherein, port one is connected with node 1; Port 2 is connected with node 5; Port 3 is connected with node 10; Port 4 is connected with node 6; The indirect inductance L 1 of node 1 and node 2; The indirect inductance L 2 of node 2 and node 3; The indirect inductance L 3 of node 3 and node 4; The indirect inductance L 4 of node 4 and node 5; The indirect inductance L 5 of node 6 and node 7; The indirect inductance L 6 of node 7 and node 8; The indirect inductance L 7 of node 8 and node 9; The indirect inductance L 8 of node 9 and node 10; The indirect inductance L 9 of node 1 and node 6; The indirect inductance L 10 of node 3 and node 8; The indirect inductance L 11 of node 5 and node 10; Node 2 is connected to the ground by tunable capacitor C1 and connects in addition; Node 4 is connected to the ground by tunable capacitor C2 and connects; Node 7 is connected to the ground by tunable capacitor C3 and connects; Node 9 is connected to the ground by tunable capacitor C4 and connects; Port one ~ 4 all connect 50 ohmages.This circuit structure is realized by inductance, tunable capacitor, and electric capacity all adopts tunable capacitor, eight inductance L 1, L2 ... L8 and three inductance L 9, L10, L11 form Crossed Circle loop, can be applied in different frequency ranges.
When inductance parameters is fixed, capacitance can timing, and coupler can obtain the response of its S parameter as shown in Figure 2, and coupler can be on a single die integrated with RFID reader transceiver.
This novel variable 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: by four ports (1 ~ 4), eight inductance L 1, L2 ... L8 and three inductance L 9, L10, L11 and four tunable capacitors C1, C2, C3, C4 are formed; Wherein, port one is connected with node 1; Port 2 is connected with node 5; Port 3 is connected with node 10; Port 4 is connected with node 6; The indirect inductance L 1 of node 1 and node 2; The indirect inductance L 2 of node 2 and node 3; The indirect inductance L 3 of node 3 and node 4; The indirect inductance L 4 of node 4 and node 5; The indirect inductance L 5 of node 6 and node 7; The indirect inductance L 6 of node 7 and node 8; The indirect inductance L 7 of node 8 and node 9; The indirect inductance L 8 of node 9 and node 10; The indirect inductance L 9 of node 1 and node 6; The indirect inductance L 10 of node 3 and node 8; The indirect inductance L 11 of node 5 and node 10; Node 2 is connected to the ground by tunable capacitor C1 and connects in addition; Node 4 is connected to the ground by tunable capacitor C2 and connects; Node 7 is connected to the ground by tunable capacitor C3 and connects; Node 9 is connected to the ground by tunable capacitor C4 and connects; Port one ~ 4 all connect 50 ohmages; Wherein eight inductance L 1, L2 ... L8 and three inductance L 9, L10, L11 form Crossed Circle loop, can be applied in different frequency ranges.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520159817.3U CN204442304U (en) | 2015-03-20 | 2015-03-20 | A kind of novel coupler circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520159817.3U CN204442304U (en) | 2015-03-20 | 2015-03-20 | A kind of novel coupler circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204442304U true CN204442304U (en) | 2015-07-01 |
Family
ID=53610116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520159817.3U Expired - Fee Related CN204442304U (en) | 2015-03-20 | 2015-03-20 | A kind of novel coupler circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204442304U (en) |
-
2015
- 2015-03-20 CN CN201520159817.3U patent/CN204442304U/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: 20150701 Termination date: 20160320 |