Radiofrequency power amplifier device and radiofrequency power amplifying method

A radio frequency power amplifier and power amplifier technology, which is applied in the field of circuit design, can solve the problem that the Doherty power amplifier cannot meet the performance requirements of the power amplifier, etc., and achieve the effects of convenient and easy debugging, improved power amplification efficiency, and good consistent performance.

Inactive Publication Date: 2014-02-12
ZTE CORP
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  • Abstract
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  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a radio frequency power amplifier device and a radio frequency power amplification method to solve the problem that a single Doherty power amplifier cannot meet the performance requirements of the power amplifier

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  • Radiofrequency power amplifier device and radiofrequency power amplifying method
  • Radiofrequency power amplifier device and radiofrequency power amplifying method
  • Radiofrequency power amplifier device and radiofrequency power amplifying method

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Embodiment Construction

[0029] figure 1 When adjusting the phase of the doherty in the middle, it is necessary to adjust the two microstrip lines of offset 1 and offset 2 to adjust the phase of the doherty. This method needs to be realized by operations such as secant line and complement line, which is inconvenient to debug, and the consistency is relatively low. Difference. A phase shifter is introduced in this scheme. In each doherty circuit, a phase shifter is used, and the phase between each doherty is conveniently compensated by the phase shifter, which makes the phase pairing during power synthesis more convenient and more accurate. It is more convenient to take into account the efficiency and linearity.

[0030] like figure 2 As shown, the radio frequency power amplifier device includes N (N is an integer greater than 1, for example, N is 2 or 3) parallel power branches, each power branch includes a phase shifter and a Doherty power amplifier, the phase shifter is used for signal phase com...

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Abstract

A radiofrequency power amplifier device and a radiofrequency power amplification method. The radiofrequency power amplifier device comprises an N-number of parallel-connected power branches; each power branch comprises phase shifters and Doherty power amplifiers, where N is an integer greater than 1. The phase shifters are configured to perform phase compensation on a signal. The present solution performs combination of two or more Doherty power amplification, performs phase adjustment on the combined Doherty power amplification, and introduces the phase shifters into a combiner Doherty circuit to perform phase compensation on the signal, thus ensuring indicators such as efficiency and linearity while increasing the efficiency of power amplification, while at the same time, allowing for increased convenience and easiness in debugging, for improved consistency of the device, and for improved operational reliability. The present solution also meets new requirements of users, such as the requirements for increased power and increased peak-to-average power ratio.

Description

technical field [0001] The present invention relates to the technical field of circuit design, and in particular, to a radio frequency power amplifier device and a radio frequency power amplifier method. Background technique [0002] In the face of the increasingly fierce competition in the communication market, the efficiency of base station products has become the focus of competition in the industry. As the main component of base stations, power amplifier products have also become the top priority of improving their efficiency. All manufacturers are studying the improvement of power amplifier efficiency. Solution, Doherty power amplifier technology is a mature power amplifier technology, figure 1 Make up the structure for the corresponding module. Various manufacturers have been mass-producing the power amplifier, and various manufacturers are still exploring the Doherty technology to make the technology easier to debug, with better consistency and more stable and reliab...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03F3/189H03F3/30
CPCH03F1/0288H03F3/189H03F3/211H03F3/245H03F2200/411
Inventor 陈化璋王刚崔晓俊
Owner ZTE CORP
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