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Double-frequency synchronous power amplifier based on T-type network and coupling line and design method thereof

A coupled line, synchronous technology, applied in the field of dual-frequency synchronous power amplifier and its design, can solve the problems of small frequency ratio range, thin branch line, large size, etc., and achieve the effect of improving linearity, efficiency and efficiency.

Inactive Publication Date: 2013-01-09
TSINGHUA UNIV
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  • Abstract
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Problems solved by technology

The characteristic of using a T-shaped network is that its frequency ratio can be made very large. The disadvantage is that its size is relatively large. When the frequency ratio is relatively large, the branch line may be very thin (open end) or thick (short circuit at the end).
The characteristic of the coupled line is that the size is relatively small, and the disadvantage is that its frequency ratio range is small. When the parameters are set correctly, the T-type network or the coupled line can be equivalent to a dual-frequency transmission line

Method used

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  • Double-frequency synchronous power amplifier based on T-type network and coupling line and design method thereof
  • Double-frequency synchronous power amplifier based on T-type network and coupling line and design method thereof
  • Double-frequency synchronous power amplifier based on T-type network and coupling line and design method thereof

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Embodiment Construction

[0038] The present invention provides a kind of method of designing dual-frequency Doherty power amplifier, and specific implementation scheme is as follows:

[0039] 1) Design a dual-band Doherty power amplifier structure;

[0040] 2) Design a dual-frequency quarter-wavelength transmission line;

[0041] 3) Design a dual-frequency delay line;

[0042] 4) Design a dual-frequency directional coupler or a dual-frequency Wilkinson power divider;

[0043] 5) Design single-channel dual-frequency power amplifier, including designing dual-frequency load network and designing dual-frequency input matching network;

[0044] 6) Combining various dual-frequency components to form a dual-frequency Doherty power amplifier;

[0045] 7) Adjust the parameters of each part to achieve the working performance of the Doherty power amplifier.

[0046] 8) Simulate and measure the performance of the dual-band Doherty power amplifier

[0047] The following describes the design method of the dual...

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Abstract

The invention discloses a double-frequency synchronous power amplifier based on a T-type network and a coupling line and a design method thereof, belonging to the power amplifier design field in the wireless communication technology. The double-frequency synchronous power amplifier can perform double-frequency synchronous work on any two frequency bands. The double-frequency Doherty power amplifier disclosed by the invention is provided with a double-channel or multi-channel double-frequency power amplifier, can simultaneously process signals of two different frequencies, and can enhance the efficiency on different frequency bands. The performance of the double-frequency Doherty on a single frequency band is the same with that of the traditional Doherty power amplifier, the efficiency of low-power regions can be enhanced, and a high efficiency can be kept for high-power regions.

Description

technical field [0001] The invention belongs to the field of power amplifier design of wireless communication technology. In particular, it relates to a dual-frequency synchronous power amplifier based on a T-shaped network and a coupling line and a design method thereof. In particular, a synchronous power amplifier supporting dual frequency bands and a design method thereof are used in the final radio frequency output of multi-frequency bands and high-efficiency mobile communication base stations. Background technique [0002] In order to realize the new concept of "green" communication, high-efficiency power amplifiers are receiving more and more attention and attention. Several techniques are currently available to achieve high efficiency. Some working modes such as Class E and Class F power amplifiers can achieve very high drain efficiency, and ideally reach 100% drain efficiency, but the disadvantage of this type of power amplifier is that its linearity is relatively ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03F1/07H03F1/32
CPCH03F1/0288Y02B60/50
Inventor 李翔陈文华冯正和
Owner TSINGHUA UNIV
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