CN204408290U - A kind of impedance matching circuit - Google Patents
A kind of impedance matching circuit Download PDFInfo
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- CN204408290U CN204408290U CN201520199188.7U CN201520199188U CN204408290U CN 204408290 U CN204408290 U CN 204408290U CN 201520199188 U CN201520199188 U CN 201520199188U CN 204408290 U CN204408290 U CN 204408290U
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Abstract
The utility model discloses a kind of impedance matching circuit.This circuit structure is realized by lamped element.The utility model is made up of a parallel RC circuit, two inductance and four electric capacity.The loss that compensating resistance and parasitic path cause is carried out by parallel RC circuit.Its adaptability is higher, stability is higher, can widely use and require in higher impedance matching system performance index.
Description
Technical field
The utility model relates to a kind of high performance impedance matching circuit, belongs to electronics and communication field.。
Background technology
Widely using of the fast development of microwave and millimeter wave communication, especially business telecommunication, the performance index for communication system propose requirements at the higher level, for most devices because impedance mismatch, and cause entire system performance to be deteriorated.In early days
In the stage, for this problem, domestic and international researcher proposes many solutions, and wherein impedance matching circuit is exactly most generation
One of achievement of table property, but early stage designing impedance matching all can only be confined in some special frequency channel and specific bandwidth,
And loss of signal is very large, stable not.Along with the rise of new material research and cross discipline, impedance matching becomes another study hotspot.
Summary of the invention
The utility model object is that utilizing a parallel RC circuit, two inductance and four electric capacity to form builds, and realizes impedance matching circuit.This circuit structure good stability, properties all can reach effect during use, greatly reduces circuit structure volume.
The technical scheme realizing the utility model object is: a kind of impedance matching circuit, comprise rf inputs mouth 1, parallel RC circuit, two inductance and four electric capacity to form, two inductance one end connect port one or 2 respectively, and the other end connects the two ends of parallel RC circuit respectively; Electric capacity
one end is connected with port one or port 2, and the other end is connected to the ground and connects;
one end is connected with parallel RC circuit, and the other end is connected to the ground and connects; Input port and output port connect 50 ohmages.Wherein, parallel RC circuit carrys out the loss that compensating resistance and parasitic path cause.Its circuit structure can realize impedance matching in 1KHz-10GHz frequency range.
Compared with prior art, because the utility model adopts lamped element composition, the remarkable advantage brought is: (1) has good stability; (2) processing is simple; (3) applicability is strong.
Accompanying drawing explanation
Fig. 1 is a kind of impedance matching circuit circuit diagram of the utility model.
Fig. 2 is a kind of impedance matching circuit S parameter of the utility model performance diagram.
Fig. 3 is a kind of impedance matching circuit phase characteristic curve of the utility model figure.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.The utility model uses impedance matching to illustrate as an example with WCDMA and WiMAX frequency range jointly.
Composition graphs 1, the utility model is that a kind of impedance matching circuit comprises rf inputs mouth 1, parallel RC circuit, two inductance and four electric capacity formations, and two inductance one end connect port one or 2 respectively, and the other end connects the two ends of parallel RC circuit respectively; Electric capacity
one end is connected with port one or port 2, and the other end is connected to the ground and connects;
one end is connected with parallel RC circuit, and the other end is connected to the ground and connects; Input port and output port connect 50 ohmages.Wherein, parallel RC circuit carrys out the loss that compensating resistance and parasitic path cause.Its circuit structure can realize impedance matching in 1KHz-10GHz frequency range.
Composition graphs 2, Fig. 3 impedance matching result figure can find out, its impedance matching is respond well, and its effect is compared traditional RLC impedance matching circuit and had greatly improved.
A kind of impedance matching circuit of the utility model, composition graphs 1, its operation principle is summarized as follows: rf inputs mouth 1, parallel RC circuit, two inductance and four electric capacity are formed, and two inductance one end connect port one or 2 respectively, and the other end connects the two ends of parallel RC circuit respectively; Electric capacity
one end is connected with port one or port 2, and the other end is connected to the ground and connects;
one end is connected with parallel RC circuit, and the other end is connected to the ground and connects; Input port and output port connect 50 ohmages.Wherein, parallel RC circuit carrys out the loss that compensating resistance and parasitic path cause.Its circuit structure can realize impedance matching in 1KHz-10GHz frequency range.
Claims (2)
1. an impedance matching circuit, is characterized in that: comprise rf inputs mouth 1, parallel RC circuit, two inductance and four electric capacity and form, two inductance one end connect port one or 2 respectively, and the other end connects the two ends of parallel RC circuit respectively; Electric capacity
one end is connected with port one or port 2, and the other end is connected to the ground and connects;
one end is connected with parallel RC circuit, and the other end is connected to the ground and connects; Input port and output port connect 50 ohmages.
2. according to the impedance matching circuit described in claim 1, it is characterized in that: parallel RC circuit carrys out the loss that compensating resistance and parasitic path cause; Its circuit structure can realize impedance matching in 1KHz-10GHz frequency range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520199188.7U CN204408290U (en) | 2015-04-03 | 2015-04-03 | A kind of impedance matching circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520199188.7U CN204408290U (en) | 2015-04-03 | 2015-04-03 | A kind of impedance matching circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204408290U true CN204408290U (en) | 2015-06-17 |
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ID=53432120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520199188.7U Expired - Fee Related CN204408290U (en) | 2015-04-03 | 2015-04-03 | A kind of impedance matching circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204408290U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104702238A (en) * | 2015-04-03 | 2015-06-10 | 徐园园 | Impedance matching circuit |
-
2015
- 2015-04-03 CN CN201520199188.7U patent/CN204408290U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104702238A (en) * | 2015-04-03 | 2015-06-10 | 徐园园 | Impedance matching circuit |
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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 |
Granted publication date: 20150617 Termination date: 20160403 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |