Doherty power amplifier with high efficient broadband
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- UNIV OF ELECTRONICS SCI & TECH OF CHINA
- Publication Date
- 2012-01-25
- Estimated Expiration
- Not applicable · inactive patent
Smart Images
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Abstract
Description
technical field
[0001] The invention belongs to the technical field of wireless communication, and relates to a transmitting device of the wireless communication technology, in particular to a structure of a broadband high-efficiency Doherty power amplifier. Background technique
[0002] The Doherty technique was proposed by Doherty in 1936. Doherty technology is a commonly used technology to improve the efficiency of power amplifiers. The block diagram of its traditional circuit is as follows: figure 1 As shown, the baseband signal is input into the power divider 10, and the power divider 10 utilizes power distribution technology to decompose the radio frequency input signal into two signals with equal power and equal phase; Delay processing to obtain different phases to obtain radio frequency (RF) signals; main power amplifier (carrier amplifier) 31 and auxiliary power amplifier (peak amplifier) 32 carry out power amplification to two-way radio frequency signals respe...