CN104702267A - Adjustable hybrid coupler circuit - Google Patents
Adjustable hybrid coupler circuit Download PDFInfo
- Publication number
- CN104702267A CN104702267A CN201510123970.5A CN201510123970A CN104702267A CN 104702267 A CN104702267 A CN 104702267A CN 201510123970 A CN201510123970 A CN 201510123970A CN 104702267 A CN104702267 A CN 104702267A
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- port
- hybrid coupler
- inductance
- adjustable
- coupler circuit
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Abstract
The invention discloses an adjustable hybrid coupler circuit. The adjustable hybrid coupler circuit is composed of four electric inductors and four adjustable capacitors, and can be widely used in places of a WCDMA (wideband code division multiple access) mobile communication system, a radar antenna, an RFID (radio frequency identification) transceiver and the like, where signal performance is strictly required. The adjustable hybrid coupler circuit can suppress out-of-band noise and improve stability of an electronic circuit. Simultaneously, compared with coupler circuits of other structures, the adjustable hybrid coupler circuit can achieve adjustability of a coupler, and can be used in different frequency bands of a communication system.
Description
Technical field
The present invention relates to coupler, particularly a kind of chaos coupler circuit, belong to communication and electronic application field, in filtering and matching network, there is important application especially.
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 present invention is directed to above problem, can effectively solve, to meet system requirements, and stability is high, volume is little, compact conformation, processing are simple, applied widely.
Summary of the invention
The invention provides and a kind of there is adjustable, that structure is simple, volume is little, stability is high hybrid coupler circuit.
The technical scheme realizing the object of the invention is: a kind of adjustable hybrid coupler circuit, comprises four ports (1 ~ 4), four inductance
~
, four tunable capacitors
; Wherein go up inductance
two ends respectively with port one, port 2 is connected; Lower inductance
two ends respectively with port 3, port 4 is connected; Left inductance
two ends respectively with port one, port 3 is connected; Right inductance
two ends respectively with port 2, port 4 is connected; One end of four tunable capacitors is connected with four port one ~ 4 respectively, and the other end is connected to the ground and connects; Port one ~ 4 all connect 50 ohmages.
Compared with prior art, the invention 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 adjustable hybrid coupler circuit of the present invention.
Fig. 2 is a kind of adjustable hybrid coupler circuit S parameter characteristic response of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Composition graphs 1, the present invention is a kind of adjustable hybrid coupler circuit, comprises four ports (1 ~ 4), four inductance
~
, four tunable capacitors
; Wherein go up inductance
two ends respectively with port one, port 2 is connected; Lower inductance
two ends respectively with port 3, port 4 is connected; Left inductance
two ends respectively with port one, port 3 is connected; Right inductance
two ends respectively with port 2, port 4 is connected; One end of four tunable capacitors is connected with four port one ~ 4 respectively, and the other end is connected to the ground and connects; Port one ~ 4 all connect 50 ohmages.
Work as inductance
parameter is fixed, and capacitance is
can timing, 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 kind of adjustable coupler device 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 overcome the problem adopting conventional coupler volume excessive, can ensure that device obtains best channel signal transmission and isolation effect.
Claims (2)
1. an adjustable hybrid coupler circuit, is characterized in that: comprise four ports (1 ~ 4), four inductance
~
, four tunable capacitors
; Wherein go up inductance
two ends respectively with port one, port 2 is connected; Lower inductance
two ends respectively with port 3, port 4 is connected; Left inductance
two ends respectively with port one, port 3 is connected; Right inductance
two ends respectively with port 2, port 4 is connected; One end of four tunable capacitors is connected with four port one ~ 4 respectively, and the other end is connected to the ground and connects; Port one ~ 4 all connect 50 ohmages.
2. according to the adjustable hybrid coupler circuit described in claim 1, it is characterized in that: this circuit structure is realized by inductance, tunable capacitor, and electric capacity all adopts tunable capacitor, four inductance resistances circularize loop, can be applied in different frequency ranges.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510123970.5A CN104702267A (en) | 2015-03-21 | 2015-03-21 | Adjustable hybrid coupler circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510123970.5A CN104702267A (en) | 2015-03-21 | 2015-03-21 | Adjustable hybrid coupler circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104702267A true CN104702267A (en) | 2015-06-10 |
Family
ID=53349084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510123970.5A Pending CN104702267A (en) | 2015-03-21 | 2015-03-21 | Adjustable hybrid coupler circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104702267A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110856339A (en) * | 2019-11-22 | 2020-02-28 | 普联技术有限公司 | Planar circuit for signal cross transmission |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1218582A (en) * | 1996-03-19 | 1999-06-02 | 法国电讯公司 | Helix antenna with built-in broadband power supply, and manufacture thereof |
| CN1222007A (en) * | 1997-12-31 | 1999-07-07 | 中国人民解放军信息工程学院 | SW multiradio share antenna isolating coupling system |
| CN104218939A (en) * | 2014-09-17 | 2014-12-17 | 王少夫 | Adjustable hybrid coupler circuit |
| CN204465505U (en) * | 2015-03-21 | 2015-07-08 | 徐园园 | A kind of adjustable hybrid coupler circuit |
-
2015
- 2015-03-21 CN CN201510123970.5A patent/CN104702267A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1218582A (en) * | 1996-03-19 | 1999-06-02 | 法国电讯公司 | Helix antenna with built-in broadband power supply, and manufacture thereof |
| CN1222007A (en) * | 1997-12-31 | 1999-07-07 | 中国人民解放军信息工程学院 | SW multiradio share antenna isolating coupling system |
| CN104218939A (en) * | 2014-09-17 | 2014-12-17 | 王少夫 | Adjustable hybrid coupler circuit |
| CN204465505U (en) * | 2015-03-21 | 2015-07-08 | 徐园园 | A kind of adjustable hybrid coupler circuit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110856339A (en) * | 2019-11-22 | 2020-02-28 | 普联技术有限公司 | Planar circuit for signal cross transmission |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150610 |
|
| WD01 | Invention patent application deemed withdrawn after publication |