CN201557083U - Low-pass power combiner - Google Patents
Low-pass power combiner Download PDFInfo
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- CN201557083U CN201557083U CN2009202471085U CN200920247108U CN201557083U CN 201557083 U CN201557083 U CN 201557083U CN 2009202471085 U CN2009202471085 U CN 2009202471085U CN 200920247108 U CN200920247108 U CN 200920247108U CN 201557083 U CN201557083 U CN 201557083U
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Abstract
The utility model relates to a low-pass power combiner, which belongs to the technical field of radio frequency circuits. The power combiner consists of two branches and an isolating resistor, wherein the two branches have the same structure, each branch consists of two inductors and two capacitors which are all welded on a printed circuit board, the two inductors of each branch are serially connected, one end of the first capacitor is connected between the two inductors while the other end is grounded, one end of the second capacitor is connected with an output end of the branch while the other end is grounded, the isolating resistor is connected between output ends of the two branches, and the output ends of the two branches are connected to form an output end of the combiner. The power combiner improves power combination effect greatly and reduces technical requirements to an output filter in a power transmission module.
Description
Technical field
The utility model belongs to the radio circuit technical field, particularly a kind of power combiner structural design that is used for the power emission module.
Background technology
Power combiner is as parts, is mainly used in the synthetic of a plurality of power amplifiers in the power emission module.Its performance directly influences the synthetic efficient of power.
Power combiner in the power emission module mainly adopts transmission line type Wilkinson (Wilkinson) synthesizer in the market, promptly is made up of the transmission line and the isolation resistance of two 1/4 wavelength.The signal that the two-way amplitude equates, phase place is identical respectively from port one and port 2 inputs, from port 3 output signals, thereby is finished the synthetic of power.
This transmission line type Wilkinson synthesizer mainly exists following deficiency:
1, when operating frequency was low, 1/4 wavelength transmission line can be quite long.If adopt 1/4 wavelength microstrip transmission line, then need bending back and forth, can take bigger printed board area.And the loss ratio of microstrip line is bigger, thereby makes the loss ratio of synthesizer bigger; If the employing coaxial cable then needs to turn to multi-turn, vertically place, take bigger space.
2, the bandwidth of operation of transmission line type Wilkinson synthesizer is narrow, and when relative bandwidth reaches 20% when above, at the frequency band two ends, the port match performance of synthesizer is just poor.
3, transmission line type Wilkinson synthesizer does not have harmonic restraining function.
Summary of the invention
The present invention designs a kind of low pass type power combiner in order to overcome the weak point of prior art, makes the power synthetic effect improve greatly, and has reduced the specification requirement of output filter in the power emission module.
A kind of low pass type power combiner of the utility model design, it is characterized in that, this synthesizer is made up of branch and an isolation resistance of two same structures, each branch is made up of two inductance and two electric capacity of being welded on the printed circuit board, two inductance series connection of each branch, first electric capacity one end is connected between two inductance, other end ground connection; Second electric capacity one end is connected the output of branch, other end ground connection; Described isolation resistance is connected between the input of two branches, and the output of two branches is connected as the output of synthesizer.
The beneficial effects of the utility model are:
The power combiner that the utility model provides, the low pass filter that constitutes with two inductance and two electric capacity has replaced 1/4 wavelength transmission line of transmission line type Wilkinson (Wilkinson) synthesizer, can make the relative working band of this synthesizer be wider than transmission line type Wilkinson (Wilkinson) synthesizer.When operating frequency was relatively lower, inductance and electric capacity were realized by lumped parameter.The lumped parameter size is little, thereby makes the synthesizer structure very compact.Because adopt the low pass mode filter to replace 1/4 wavelength transmission line, this synthesizer has the obvious suppression effect to harmonic wave.
Description of drawings
Fig. 1 is a condensating synthesizering circuit schematic diagram of the present utility model.
Embodiment
A kind of low pass type power combiner that the utility model proposes reaches embodiment in conjunction with the accompanying drawings and is described in detail as follows.
A kind of low pass type power combiner of the present utility model, as shown in Figure 1, it is characterized in that, this synthesizer is made up of the branch of two same structures, each branch is made up of two inductance and two electric capacity of being welded on the printed circuit board, two inductance L 11 (21) of each branch, L12 (22) series connection, capacitor C 11 (21) one ends are connected between two inductance, other end ground connection; Capacitor C 12 (22) one ends are connected the output of branch, other end ground connection; An isolation resistance R is connected between the input (1) and (2) of two branches, and the output of two branches is connected as the output of synthesizer (3).
The operation principle of above-mentioned synthesizer is: two-way is imported by port (1) and port (2) respectively with the radiofrequency signal of width of cloth homophase, and composite signal is exported by port (3).Harmonic component in the input signal is through two branch's low-pass filtering of synthesizer, and the harmonic component in the output signal can reduce greatly.Each port of synthesizer all has good matching performance in whole working band, this just provides good load for the power amplifier that will synthesize, and makes the synthetic effect of power amplifier be improved.
The embodiment of each parts of low pass type power combiner of the present utility model is described as follows:
Isolation resistance adopts high-power little strip resistance in 100 Europe.
Inductance L 11=L21, L12=L22.It is that the enamelled wire coiling of 2mm forms that four inductance all adopt diameter, and coil diameter is 10mm, is respectively 2 circles and 3 and encloses.
Capacitor C 11=C21, C12=C22.Four electric capacity all adopt the high-frequency and high-voltage high power capacity.
Low pass type power combiner of the present utility model also can change low pass type power divider into, promptly change an output of low pass type power combiner into input in use, change two inputs of low pass type power combiner into output and can realize power division.
Claims (2)
1. low pass type power combiner, it is characterized in that, this synthesizer is made up of branch and an isolation resistance of two same structures, each branch is made up of two inductance and two electric capacity of being welded on the printed circuit board, two inductance series connection of each branch, first electric capacity one end is connected between two inductance, other end ground connection; Second electric capacity one end is connected the output of branch, other end ground connection; Described isolation resistance is connected between the input of two branches, and the output of two branches is connected as the output of synthesizer.
2. synthesizer according to claim 1 is characterized in that, it is that the enamelled wire coiling of 2mm forms that two inductance of described each branch all adopt diameter, and coil diameter is 10mm, is respectively 2 circles and 3 and encloses.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202471085U CN201557083U (en) | 2009-11-20 | 2009-11-20 | Low-pass power combiner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202471085U CN201557083U (en) | 2009-11-20 | 2009-11-20 | Low-pass power combiner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201557083U true CN201557083U (en) | 2010-08-18 |
Family
ID=42616772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202471085U Expired - Fee Related CN201557083U (en) | 2009-11-20 | 2009-11-20 | Low-pass power combiner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201557083U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103595368A (en) * | 2013-11-26 | 2014-02-19 | 北京无线电测量研究所 | Power divider for meter wave frequency band |
| US11043931B2 (en) | 2019-11-04 | 2021-06-22 | Analog Devices International Unlimited Company | Power combiner/divider |
-
2009
- 2009-11-20 CN CN2009202471085U patent/CN201557083U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103595368A (en) * | 2013-11-26 | 2014-02-19 | 北京无线电测量研究所 | Power divider for meter wave frequency band |
| US11043931B2 (en) | 2019-11-04 | 2021-06-22 | Analog Devices International Unlimited Company | Power combiner/divider |
| US11843360B2 (en) | 2019-11-04 | 2023-12-12 | Analog Devices International Unlimited Company | Power combiner/divider |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SUNWAVE COMMUNICATIONS CO., LTD. Free format text: FORMER OWNER: BEIJING RFA TECHNOLOGY CO., LTD. Effective date: 20120618 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 100080 HAIDIAN, BEIJING TO: 311153 HANGZHOU, ZHEJIANG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20120618 Address after: 311153, Zhejiang, Hangzhou, Binjiang District Torch Road, No. 581 three-dimensional building (High-tech Zone) Patentee after: Sunwave Communication Co., Ltd. Address before: 100080, Beijing, Haidian District, north of information base on the ground, No. 5, ground Brilliant International Center, room 422, room 4 Patentee before: Beijing RFA Technology Co., Ltd. |
|
| 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: 20100818 Termination date: 20161120 |