Broadband out-phase power combiner
A power combiner and power amplifier technology, which is applied in the field of radio frequency communication, can solve the problems of not meeting the requirements of the communication system and narrow bandwidth, and achieve the effects of reducing the influence of parasitic parameters, expanding bandwidth, and increasing performance
Inactive Publication Date: 2018-11-23
HANGZHOU DIANZI UNIV
View PDF10 Cites 1 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, the applicant found in the research that in fact the traditional Chireix power synthesizer is designed according to a single frequency point, so the bandwidth of this synthesizer is relatively narrow, which has a greater impact on the amplification of communication signals with a certain bandwidth, otherwise it will affect the The linearity, output power and efficiency of the entire out-of-phase power amplification system have a great influence, so the traditional out-of-phase power combiner can no longer meet the requirements of today's communication systems. Therefore, it is urgent to develop a broadband out-phase power combiner Increase the bandwidth to meet the linearity, output power and efficiency of the system in the passband to meet the high transmission rate requirements of current and future wireless communication systems
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0036] Embodiment one, such as image 3 As shown, the Chireix power combiner includes two straight microstrip lines TL1 and TL2 with the same structure, the branch where the straight microstrip line TL1 is located is the upper branch, and the branch where the straight microstrip line TL2 is located is the lower branch; the bandwidth expansion circuit Two straight microstrip lines TL3 and TL4 are connected in series. The output impedance of the upper branch is Z 1 , the output impedance of the lower branch is Z 2 , the total output impedance is Z 3 , 2Z 3 = Z 1 = Z 2 .
[0037] The microstrip line TL4 is a λ / 4 microstrip line, namely where Z C2 is the characteristic impedance of the microstrip line TL4, R L For the load, the load impedance is 50 ohms. The microstrip line TL3 is a λ / 4 microstrip line, similarly Z C1 is the characteristic impedance of the microstrip line TL3; but The microstrip line TL1 is a λ / 4 microstrip line, then
[0038]It is obtained th...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to a broadband out-phase power combiner. The broadband out-phase power combiner comprises a switch power amplifier, a Chireix power combiner and a bandwidth extension circuit; the Chireix power combiner is connected between the switch power amplifier and a load in series; and the bandwidth extension circuit is connected between the Chireix power combiner and the load in series. Two out-phase broadband modulation signals are input to the circuit simultaneously, the positive signal is input to the upper branch circuit, the negative signal is input to the lower branch circuit, the two signals are integrated by the Chireix power combiner and then output by the bandwidth extension circuit, and the output signal is absorbed by the load. According to broadband out-phase power combiner, the quality factors of a matching circuit are reduced by adopting the bandwidth extension circuit by means of step impedance matching, a big influence is achieved on combination of communication signals such as the WCDMA signal and the LTE signal which have the certain bandwidth, and then the linearity, the output power and the efficiency in the overall passband are influenced.
Description
technical field [0001] The invention belongs to the technical field of radio frequency communication, and relates to a broadband out-of-phase power combiner. Background technique [0002] With the development of communication technology, due to the increasing demand for communication, communication operators now use more and more complex communication signals, including WCDMA signals with 5MHz bandwidth and LTE signals with 20MHz, which will be applied to 5G in the future. Signals for communication systems. In order to be able to deal with these modulated signals with a certain bandwidth, researchers must design a power amplification system with a certain bandwidth. The out-of-phase power amplification system has many advantages of high linearity, high efficiency and high output power. The traditional out-of-phase power amplification system The system amplifies the constant envelope signal, and its advantages are high output power and efficiency, and high linearity for the ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): H03H7/38
CPCH03H7/38
Inventor 程知群徐雷冯瀚田健廷张振东李晨熊国萍
Owner HANGZHOU DIANZI UNIV