CN204316462U - A kind of adaptive control match circuit of antenna - Google Patents
A kind of adaptive control match circuit of antenna Download PDFInfo
- Publication number
- CN204316462U CN204316462U CN201420661435.6U CN201420661435U CN204316462U CN 204316462 U CN204316462 U CN 204316462U CN 201420661435 U CN201420661435 U CN 201420661435U CN 204316462 U CN204316462 U CN 204316462U
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- circuit
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Abstract
The utility model relates to a kind of adaptive control match circuit of antenna.This Adaptive matching circuit structure adopts power amplifier, electric capacity, attenuator, frequency mixer, filter, broadband matching circuit and control circuit to realize.The utility model does not limit load impedance and operating frequency.The utility model efficiently solve most of matching network use time due to produce loss, cause the problem of system performance degradation.And can according to specific needs, the size of setting network and loss size, realize adaptive control function.It is good that present network architecture has adaptability, the feature that stability is high.Meanwhile, adjustable matching network adopts passive inductance, capacity cell, and circuit bandwidth is wider, loss is less, and can realize adjustable function in various different frequency range, the utility model can be widely used in needing in the corresponding band system of Adaptive matching circuit.
Description
Technical field
The utility model relates to radio system adaptive control match circuit, belongs to electronics and the communications field.
Background technology
Along with the development of the systems such as microwave and millimeter wave communication, radar, the especially development of mobile hand-held wireless communication terminal, individual soldier's satellite mobile communication terminal, military and civilian multimode multiplex communication terminal, harsh all the more to the requirement of device in system.Wherein running into maximum problems is exactly about power delivery problem, and this is also attractive especially problem in network theory, in communication equipment and sorts of systems.The application of lossless matching network is very extensive, and its quality directly determines the quality of product, so to the research of lossless matching network with to produce be always various countries' attention.Due to the development of computer technology, solid-state technique, material industry, the development of matching network also steps on a new stage, and towards high accuracy, low-power consumption, small size future development.Improving constantly along with digital communication system clock frequency, and the increase of digital network in speed and bandwidth simultaneously, has wider passband to matching network and tunable characteristic also proposes higher requirement.And the matching network utilizing conventional method to design is faced with the adjustable problem of bandwidth sum, the utility model is mainly based on this point, adopt the matching network circuit that new, adopt a kind of self-adaptation control method to achieve a kind of broadband, adjustable adaptive matching networks.
Summary of the invention
The utility model object is the adaptive control match circuit providing a kind of antenna, and this network has adaptive control, structure is simple, wider bandwidth, volume are little, stability is high match circuit.
The technical scheme realizing the utility model object is: this Adaptive matching circuit structure adopts power amplifier, electric capacity, attenuator, frequency mixer, filter, broadband matching circuit and control circuit to realize, wherein RF signal produces certain reflection coefficient through mixing, filtering, reflection coefficient control circuit and deamplification acting in conjunction match circuit, make reflection coefficient reach minimum by adjustable matching network.Its signal sends through antenna or receives.
Reflection coefficient is made to reach minimum by adjustable matching network.
Compared with prior art, because the utility model adopts adaptive control matching network, the remarkable advantage brought is: (1) matching network self adaptation is adjustable; (2) bandwidth is adjustable; (3) regulable center frequency; (4) volume is little; (5) stability is high; (6) applicability is extensive, is applicable in the various system to performance requirement harshness.
Accompanying drawing explanation
Fig. 1 is the adaptive control match circuit structural representation of a kind of antenna of the utility model.
Fig. 2 be the adaptive control match circuit of a kind of antenna of the utility model there are the two of shunt capacitance
network;
Fig. 3 is adaptive control match circuit insertion loss and the return loss performance plot of a kind of antenna of the utility model;
Fig. 4 is the adaptive control match circuit phase characteristic figure of a kind of antenna 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 adaptive matching networks, chooses the wave band of 1-2GHz as an example, be described at this.Adaptive control matching network in this new antenna system, this Adaptive matching circuit structure adopts power amplifier, electric capacity, attenuator, frequency mixer, filter, broadband matching circuit and control circuit to realize, wherein RF signal produces certain reflection coefficient through mixing, filtering, reflection coefficient control circuit signal and deamplification acting in conjunction match circuit, make reflection coefficient reach minimum, its signal sends through antenna or receives.Mainly control minimal reflection coefficient, the size of load impedance can be changed by adjustable matching network, thus reaches the function of control.
Composition graphs 2, it is two that adjustable matching network chooses bypass
network, it at least has a single variable capacitor in parallel with inductor.By changing electric capacity
size, can amount of bandwidth be adjusted, very easily Circuit tuning performance, to meet performance requirement.
Composition graphs 3, Fig. 4, choose the result of above-mentioned matching network as explanation, now the bandwidth of circuit reaches 1GHz, and within the scope of this, its phase place is expressed as linear phase, the result shows that this control circuit has good Broadband Matching performance.
Composition graphs 1, Fig. 2, the adaptive control match circuit of the utility model antenna, its operation principle is summarized as follows: this Adaptive matching circuit structure adopts power amplifier, electric capacity, attenuator, frequency mixer, filter, broadband matching circuit and control circuit to realize, wherein RF signal produces certain reflection coefficient through mixing, filtering, reflection coefficient control circuit makes reflection parameters reach minimum with deamplification acting in conjunction match circuit, by changing the size of adjustable matching network electric capacity, can amount of bandwidth be adjusted, realize bandwidth controlled.Make the loss of network minimum.Thus realize the adaptive control function of matching network.
The utility model adaptive control matching network is by realizations such as amplifier, frequency mixer and relevant passive devices, and processing is simple, and good stability, reliability is high.Wherein adjustable matching network can adopt different forms to realize, thus volume is significantly reduced.Show fabulous Broadband Matching performance.
Claims (4)
1. the adaptive control match circuit of an antenna, it is characterized in that: this Adaptive matching circuit structure adopts power amplifier, electric capacity, attenuator, frequency mixer, filter, broadband matching circuit and control circuit to realize, wherein RF signal produces certain reflection coefficient through mixing, filtering, reflection coefficient control circuit makes reflection parameters reach minimum with deamplification acting in conjunction match circuit, and its signal sends through antenna or receives.
2. according to the adaptive control match circuit of a kind of antenna described in claim 1, it is characterized in that: adjustable matching network is the two π network of bypass, and it at least has a single variable capacitor in parallel with inductor.
3. according to the adaptive control match circuit of a kind of antenna described in claim 1, it is characterized in that: the size of load impedance can be changed by adjustable matching network, make the input impedance of network and output impedance reach conjugate impedance match, thus reach the function of control.
4. the adaptive control match circuit of a kind of antenna according to claim 1 or 3, is characterized in that: circuit structure can realize adaptive network coupling in 1MHz-10GHz frequency range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420661435.6U CN204316462U (en) | 2014-11-07 | 2014-11-07 | A kind of adaptive control match circuit of antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420661435.6U CN204316462U (en) | 2014-11-07 | 2014-11-07 | A kind of adaptive control match circuit of antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204316462U true CN204316462U (en) | 2015-05-06 |
Family
ID=53138756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420661435.6U Expired - Fee Related CN204316462U (en) | 2014-11-07 | 2014-11-07 | A kind of adaptive control match circuit of antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204316462U (en) |
-
2014
- 2014-11-07 CN CN201420661435.6U patent/CN204316462U/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 |
Granted publication date: 20150506 Termination date: 20151107 |
|
| EXPY | Termination of patent right or utility model |