CN105356024A - Variable power divider and implementation method - Google Patents
Variable power divider and implementation method Download PDFInfo
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- CN105356024A CN105356024A CN201510875378.0A CN201510875378A CN105356024A CN 105356024 A CN105356024 A CN 105356024A CN 201510875378 A CN201510875378 A CN 201510875378A CN 105356024 A CN105356024 A CN 105356024A
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- electric bridge
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P5/00—Coupling devices of the waveguide type
- H01P5/04—Coupling devices of the waveguide type with variable factor of coupling
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Abstract
The invention relates to a variable power divider. When a variable capacitor I and a variable capacitor II are connected with the output port 3 and output port 4 of an electric bridge, signals are all reflected back, and the amplitude of the signals that pass through the electric bridge III will not change; when the signals are reflected, a reflection phase will be attached to the signals; and since the phase will be attached to the signals which pass through the electric bridge III, the phase of the signals which pass through the electric bridge III will change, and therefore, the phase of the signals which pass through the electric bridge III will change correspondingly through adjusting the capacitance values of the variable capacitor I and the variable capacitor II. When signals are inputted through the input end of the variable power divider, the phase of the signals which pass through the electric bridge III will change, and after two paths of signals are combined through an electric bridge II, the power of signals outputted from the output end I and output end II of the variable power divider can change, and desired power division ratios can be obtained through reasonably selecting the capacitance values of the variable capacitor I and the variable capacitor II. The variable power divider has the advantages of simple structure, easiness in processing and assembly and convenient operation.
Description
Technical field
The present invention relates to a kind of variable power divider and implementation method, in antenna feeding network.
Background technology
In antenna array, feeding network is absolutely necessary.Due to the restriction of frequency bandwidth, feeding network can not realize identical merit proportion by subtraction in whole frequency bandwidth.For the antenna being strictly limited in single frequency operation, the method adopted at present is realize in whole frequency bandwidth, realize identical merit proportion by subtraction by revising cable substantially.Because revise cable can cause other index such as variation such as standing-wave ratio, phase place, therefore the method is difficult to carry out at use scene, and majority wants return-to-factory to be undertaken by professional.
Summary of the invention
In view of the defect that prior art exists, the invention provides a kind of can continuously adjustabe and can realize any merit proportion by subtraction, simple to operate, when regulating change to the less variable power divider of other Index Influence and implementation method.
The present invention to achieve these goals, the technical scheme taked is: a kind of variable power divider, comprise medium substrate, it is characterized in that: also comprise variable capacitor I, variable capacitor II, electric bridge I, electric bridge II, electric bridge III, resistance R, described medium substrate is rectangle, and be respectively equipped with strip microstrip line I, L shape microstrip line II, L shape microstrip line III in the front of medium substrate, one end of described strip microstrip line I is input pad, the other end is output I pad
Described L shape microstrip line II one end is resistance R pad hole, the other end is variable capacitor I pad hole, described L shape microstrip line III one end is output II pad, the other end is variable capacitor II pad hole, electric bridge III hole is provided with on the left of output I pad and output II pad and between strip microstrip line I and L shape microstrip line III, electric bridge II hole is provided with on the right side of input pad and resistance R pad hole and between strip microstrip line I and L shape microstrip line II, in variable capacitor I pad hole and lower end, variable capacitor II pad hole and be provided with electric bridge I hole between L shape microstrip line II and L shape microstrip line III, layer of metal layer is provided with at the reverse side of medium substrate,
Physical circuit connects: described electric bridge I, electric bridge II and electric bridge III is arranged on electric bridge I hole respectively, electric bridge II hole, in electric bridge III hole, 1 mouthful of electric bridge I is connected with input pad, 2 mouthfuls of one end by resistance R pad hole contact resistance R, 3 mouthfuls connect 2 mouthfuls of electric bridge III by L shape microstrip line II, 4 mouthfuls connect 1 mouthful of electric bridge II by strip microstrip line I, 2 mouthfuls of electric bridge II are passed through 1 mouthful that L shape microstrip line III connects electric bridge III, 3 mouthfuls connect output I pad, 4 mouthfuls connect output II pad, 3 mouthfuls of electric bridge III connect one end of variodenser I by variable capacitor I pad hole, 4 mouthfuls connect one end of variable capacitor II by variable capacitor II pad hole, resistance R, the other end connection metal layer ground connection respectively of variable capacitor I and variable capacitor II, strip microstrip line I, L shape microstrip line II, L shape microstrip line III and metal level form microstrip circuit.
An implementation method for variable power divider, is characterized in that, step is as follows:
Variable power divider is three port devices, i.e. input and output I, output II, and variable power divider make use of the principle of reflection phase shifter cleverly; Because variable capacitor I and variable capacitor II is net resistance element, when its be connected on electric bridge III output 3 mouthfuls, 4 mouthfuls time, due to the effect of net resistance, signal is all reflected back, and therefore can not be changed by the signal amplitude of electric bridge III; But, signal can be added a reflected phase will by reflex time, and this reflected phase will can be attached on the signal by electric bridge III, cause and changed by the signal phase of electric bridge III, therefore the method for the capacitance regulating variable capacitor I and variable capacitor II can be taked, the reflected phase will of adding is changed, thus causes and changed accordingly by the corresponding generation of the signal phase of electric bridge III; When signal is inputted by variable power divider input, two-way is divided into after electric bridge I, signal phase wherein through electric bridge III changes, and two paths of signals is again after the synthesis of electric bridge II, and the power of the signal exported by variable power divider output I, output II will change; During continuous adjustment variable capacitor I and variable capacitor II, the merit proportion by subtraction of variable power divider output I, output II will recur change; The capacitance of rational selection variable capacitor I and variable capacitor II, will obtain the merit proportion by subtraction that we expect.
Feature of the present invention and beneficial effect are:
(1) the present invention adopts electric bridge to realize power dividing function, utilizes variable capacitor to realize the change of power-division ratios.Continuously adjustabe of the present invention and any merit proportion by subtraction can be realized.
(2) the present invention is simple to operate, and when regulating, does not affect other index.
(3) volume of the present invention is little, structure simple, and processing and assembling are easily, easy to operate.
Accompanying drawing explanation
Fig. 1 is circuit theory diagrams of the present invention;
Fig. 2 is the front schematic view of medium substrate of the present invention;
Fig. 3 is the reverse side schematic diagram of medium substrate of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail:
As shown in Figure 1, 2, 3, a kind of variable power divider, comprises medium substrate 1, also comprises variable capacitor I, variable capacitor II, electric bridge I, electric bridge II, electric bridge III, resistance R.
Medium substrate 1 is rectangle, is respectively equipped with strip microstrip line I1-1, L shape microstrip line II1-2, L shape microstrip line III1-3 in the front of medium substrate 1.
One end of strip microstrip line I1-1 is input pad 1-1-1, the other end is output I pad 1-1-2, L shape microstrip line II1-2 one end is resistance R pad hole 1-2-1, the other end is variable capacitor I pad hole 1-2-2, L shape microstrip line III1-3 one end is output II pad 1-3-1, the other end is variable capacitor II pad hole 1-3-2, electric bridge III hole 2 is provided with on the left of output I pad 1-1-2 and output II pad 1-3-1 and between strip microstrip line I1-1 and L shape microstrip line III1-3, electric bridge II hole 3 is provided with on the right side of input pad 1-1-1 and resistance R pad hole 1-2-1 and between strip microstrip line I1-1 and L shape microstrip line II1-2, in variable capacitor I pad hole 1-2-2 and 1-3-2 lower end, variable capacitor II pad hole and be provided with electric bridge I hole 4 between L shape microstrip line II1-2 and L shape microstrip line III1-3, layer of metal layer 1-4 is provided with at the reverse side of medium substrate 1.
Physical circuit connects: described electric bridge I, electric bridge II and electric bridge III is arranged on electric bridge I hole 2 respectively, electric bridge II hole 3, in electric bridge III hole 4, 1 mouthful of electric bridge I is connected with input pad 1-1-1, 2 mouthfuls of one end by resistance R pad hole 1-2-1 contact resistance R, 3 mouthfuls connect 2 mouthfuls of electric bridge III by L shape microstrip line II1-2, 4 mouthfuls connect 1 mouthful of electric bridge II by strip microstrip line I1-1, 2 mouthfuls of electric bridge II are passed through 1 mouthful that L shape microstrip line III1-3 connects electric bridge III, 3 mouthfuls connect output I pad 1-1-2, 4 mouthfuls connect output II pad 1-3-1, 3 mouthfuls of electric bridge III connect one end of variodenser I by variable capacitor I pad hole 1-2-2, 4 mouthfuls connect one end of variable capacitor II by variable capacitor II pad hole 1-3-2, resistance R, the other end connection metal layer 1-4 ground connection respectively of variable capacitor I and variable capacitor II, strip microstrip line I1-1) L shape microstrip line II1-2, L shape microstrip line III1-3 and metal level 1-4 formation microstrip circuit.
The implementation method of variable power divider: variable power divider is three port devices, i.e. input and output I, output II.Variable power divider of the present invention make use of the principle of reflection phase shifter cleverly.Because variable capacitor I and variable capacitor II is net resistance element, when its be connected on electric bridge III output 3 mouthfuls, 4 mouthfuls time, due to the effect of net resistance, signal is all reflected back, and therefore can not be changed by the signal amplitude of electric bridge III.But signal can be added a reflected phase will by reflex time, and this reflected phase will can be attached on the signal by electric bridge III, causes and is changed by the signal phase of electric bridge III.Therefore can take the method for capacitance regulating variable capacitor I and variable capacitor II, the reflected phase will of adding is changed, thus cause and changed accordingly by the corresponding generation of the signal phase of electric bridge III.When signal is inputted by variable power divider input, two-way is divided into after electric bridge I, signal phase wherein through electric bridge III changes, and two paths of signals is again after the synthesis of electric bridge II, and the power of the signal exported by variable power divider output I, output II will change.During continuous adjustment variable capacitor I and variable capacitor II, the merit proportion by subtraction of variable power divider output I, output II will recur change.The capacitance of rational selection variable capacitor I and variable capacitor II, will obtain the merit proportion by subtraction that we expect.
Claims (6)
1. a variable power divider, comprise medium substrate (1), it is characterized in that: also comprise variable capacitor I, variable capacitor II, electric bridge I, electric bridge II, electric bridge III, resistance R, described medium substrate (1) is rectangle, be respectively equipped with strip microstrip line I(1-1 in the front of medium substrate (1)), L shape microstrip line II(1-2), L shape microstrip line III(1-3), described strip microstrip line I(1-1) one end be input pad (1-1-1), the other end is output I pad (1-1-2)
Described L shape microstrip line II(1-2) one end is resistance R pad hole (1-2-1), the other end is variable capacitor I pad hole (1-2-2), described L shape microstrip line III(1-3) one end is output II pad (1-3-1), the other end is variable capacitor II pad hole (1-3-2), output I pad (1-1-2) and output II pad (1-3-1) left side and strip microstrip line I(1-1) and L shape microstrip line III(1-3) between be provided with electric bridge III hole (2), input pad (1-1-1) and resistance R pad hole (1-2-1) right side and strip microstrip line I(1-1) and L shape microstrip line II(1-2) between be provided with electric bridge II hole (3), at variable capacitor I pad hole (1-2-2) and (1-3-2) lower end, variable capacitor II pad hole and L shape microstrip line II(1-2) and L shape microstrip line III(1-3) between be provided with electric bridge I hole (4), layer of metal layer (1-4) is provided with at the reverse side of medium substrate (1),
Physical circuit connects: described electric bridge I, electric bridge II and electric bridge III is arranged on electric bridge I hole (2) respectively, electric bridge II hole (3), in electric bridge III hole (4), 1 mouthful of electric bridge I is connected with input pad (1-1-1), 2 mouthfuls of one end by resistance R pad hole (1-2-1) contact resistance R, 3 mouthfuls by L shape microstrip line II(1-2) connect 2 mouthfuls of electric bridge III, 4 mouthfuls by strip microstrip line I(1-1) connect 1 mouthful of electric bridge II, 2 mouthfuls of electric bridge II by L shape microstrip line III(1-3) connect 1 mouthful of electric bridge III, 3 mouthfuls connect output I pad (1-1-2), 4 mouthfuls connect output II pad (1-3-1), 3 mouthfuls of electric bridge III connect one end of variodenser I by variable capacitor I pad hole (1-2-2), 4 mouthfuls connect one end of variable capacitor II by variable capacitor II pad hole (1-3-2), resistance R, other end connection metal layer (1-4) ground connection respectively of variable capacitor I and variable capacitor II, strip microstrip line I(1-1), L shape microstrip line II(1-2), L shape microstrip line III(1-3) and metal level (1-4) form microstrip circuit.
2. a kind of variable power divider according to claim 1, is characterized in that, described medium substrate (1) adopts polytetrafluoroethylene sheet material, and dielectric constant 2.55, thickness is 0.8mm.
3. a kind of variable power divider according to claim 1, it is characterized in that, described strip microstrip line I(1-1), L shape microstrip line II(1-2), L shape microstrip line III(1-3) and metal level (1-4) be copper product, at copper product electroplating surfaces with tin or gold-plated.
4. a kind of variable power divider according to claim 1, is characterized in that, described electric bridge I, electric bridge II, electric bridge III are 90 ° of coupling electric bridges that model is identical.
5. a kind of variable power divider according to claim 1, is characterized in that, described variable capacitor I, variable capacitor II model are identical, are air dielectric capacitor, and the capacitance variations scope of variable capacitance is 1.5pF-22pF, and resistance R is 50 Ohmic resistances.
6. an implementation method for variable power divider, is characterized in that, step is as follows:
Variable power divider is three port devices, i.e. input and output I, output II, and variable power divider make use of the principle of reflection phase shifter cleverly; Because variable capacitor I and variable capacitor II is net resistance element, when its be connected on electric bridge III output 3 mouthfuls, 4 mouthfuls time, due to the effect of net resistance, signal is all reflected back, and therefore can not be changed by the signal amplitude of electric bridge III; But, signal can be added a reflected phase will by reflex time, and this reflected phase will can be attached on the signal by electric bridge III, cause and changed by the signal phase of electric bridge III, therefore the method for the capacitance regulating variable capacitor I and variable capacitor II can be taked, the reflected phase will of adding is changed, thus causes and changed accordingly by the corresponding generation of the signal phase of electric bridge III; When signal is inputted by variable power divider input, two-way is divided into after electric bridge I, signal phase wherein through electric bridge III changes, and two paths of signals is again after the synthesis of electric bridge II, and the power of the signal exported by variable power divider output I, output II will change; During continuous adjustment variable capacitor I and variable capacitor II, the merit proportion by subtraction of variable power divider output I, output II will recur change; The capacitance of rational selection variable capacitor I and variable capacitor II, will obtain the merit proportion by subtraction that we expect.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510875378.0A CN105356024B (en) | 2015-12-03 | 2015-12-03 | A kind of variable power divider |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510875378.0A CN105356024B (en) | 2015-12-03 | 2015-12-03 | A kind of variable power divider |
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| CN105356024A true CN105356024A (en) | 2016-02-24 |
| CN105356024B CN105356024B (en) | 2018-07-06 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114024118A (en) * | 2021-11-08 | 2022-02-08 | 中国电子科技集团公司第九研究所 | Power distribution network formed in combined bridge mode |
| CN114094296A (en) * | 2021-12-08 | 2022-02-25 | 苏州灿勤通讯技术有限公司 | Adjustable power synthesizer |
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| JP3819905B2 (en) * | 2004-02-18 | 2006-09-13 | 日本電業工作株式会社 | (N + 1) Power combiner with contactless switch |
| CN101110489A (en) * | 2007-08-14 | 2008-01-23 | 锐迪科无线通信技术（上海）有限公司 | Variable radio frequency signal phase-shifting circuit and its phase-shifting method |
| CN103490131A (en) * | 2013-09-06 | 2014-01-01 | 西安空间无线电技术研究所 | Microwave radio-frequency power divider of transmission line structure |
| CN103887585A (en) * | 2012-12-21 | 2014-06-25 | 上海联影医疗科技有限公司 | 3db bridge power divider |
| CN205303636U (en) * | 2015-12-03 | 2016-06-08 | 天津七六四通信导航技术有限公司 | Ware is divided to variable merit |
-
2015
- 2015-12-03 CN CN201510875378.0A patent/CN105356024B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3819905B2 (en) * | 2004-02-18 | 2006-09-13 | 日本電業工作株式会社 | (N + 1) Power combiner with contactless switch |
| CN101110489A (en) * | 2007-08-14 | 2008-01-23 | 锐迪科无线通信技术（上海）有限公司 | Variable radio frequency signal phase-shifting circuit and its phase-shifting method |
| CN103887585A (en) * | 2012-12-21 | 2014-06-25 | 上海联影医疗科技有限公司 | 3db bridge power divider |
| CN103490131A (en) * | 2013-09-06 | 2014-01-01 | 西安空间无线电技术研究所 | Microwave radio-frequency power divider of transmission line structure |
| CN205303636U (en) * | 2015-12-03 | 2016-06-08 | 天津七六四通信导航技术有限公司 | Ware is divided to variable merit |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114024118A (en) * | 2021-11-08 | 2022-02-08 | 中国电子科技集团公司第九研究所 | Power distribution network formed in combined bridge mode |
| CN114024118B (en) * | 2021-11-08 | 2023-03-31 | 中国电子科技集团公司第九研究所 | Power distribution network formed in combined bridge mode |
| CN114094296A (en) * | 2021-12-08 | 2022-02-25 | 苏州灿勤通讯技术有限公司 | Adjustable power synthesizer |
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| CN105356024B (en) | 2018-07-06 |
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