A method to improve linearity of radio-frequency power amplifier, system and baseband

A technology of radio frequency power and amplifier, which is applied in the field of radio frequency power amplifiers, can solve problems such as the deterioration of power amplifier linearity, the influence of TD-SCDMA mobile terminal transmission system transmission performance, and the deterioration of linearity, etc., and achieve the effect of good linearity
CN1964213AInactive Publication Date: 2007-05-16VIMICRO CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
VIMICRO CORP
Publication Date
2007-05-16
Estimated Expiration
Not applicable · inactive patent

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Abstract

The disclosed method for increasing RF power amplifier linearity comprises: base band acquires output power of current RF power amplifier from received top signaling to determine the size of IQ signal for RF transmitter; the base band sends IQ signal to target, and the latter processes gain or received IQ signal to send signal to a RF power amplifier. This invention can ensure the output signal linearity so as well as the RF power amplifier.
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Description

technical field

[0001] The invention relates to radio frequency power amplifier technology, in particular to a method, system and baseband for improving the linearity of radio frequency power amplifier in time division-synchronous code division multiple access (TD-SCDMA) system. Background technique

[0002] FIG. 1 is a structural diagram of a TD-SCDMA mobile terminal transmitting system in the prior art, and the system includes: a baseband 101 and a transmitting part. The transmitting part of the system is composed of a radio frequency transmitter 102, a radio frequency power amplifier (PA) 103, an antenna switch and an antenna. The radio frequency transmitter 102 receives the IQ signal output by the baseband 101, and performs gain processing on the signal, and outputs it to the radio frequency power amplifier 103, and the radio frequency power amplifier 103 amplifies the received signal and transmits it through the antenna switch and the antenna.

[0003] For the convenie...

Claims

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