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Reverse F-type power amplifier and emitter as well as processing method

A power amplifier and pre-distortion processing technology, applied in power amplifiers, high-frequency amplifiers, improving amplifiers to reduce nonlinear distortion, etc., can solve the problems of poor linearity effect of power amplifiers, etc. The effect of VBW's influence

Inactive Publication Date: 2013-11-13
COMBA TELECOM SYST CHINA LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0020] The embodiment of the present invention provides an inverse class F power amplifier, transmitter and processing method, which is used for the problem of poor linear effect in the power amplifier using Doherty technology in the prior art

Method used

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  • Reverse F-type power amplifier and emitter as well as processing method
  • Reverse F-type power amplifier and emitter as well as processing method
  • Reverse F-type power amplifier and emitter as well as processing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] like Figure 5 As shown, it is a schematic structural diagram of an inverse class F power amplifier according to Embodiment 1 of the present invention. The inverse class F power amplifier includes: a power amplifier device 41 and a third harmonic short circuit 421 and a second harmonic open circuit 422. Harmonic control circuit 42, wherein:

[0053] The power amplifier device 41 is used to amplify the radio frequency signal and input it to the harmonic control circuit through the input terminal A of the harmonic control circuit;

[0054] The radio frequency signal input in the harmonic control circuit first passes through the third harmonic short-circuit circuit, then passes through the second harmonic open circuit, and then is output through the output terminal B of the harmonic control circuit.

[0055] Specifically, the power amplifier device can be a Si-LDMOS device with a drain-level bias voltage of 50 volts and a small drain-source capacitance. The power amplifie...

Embodiment 2

[0077] like Image 6 As shown, it is a flow chart of a method for signal amplification using an inverse class F power amplifier according to Embodiment 2 of the present invention. The method includes:

[0078] Step 201: When the input matching unit configures the input source impedance to a set value, output the received radio frequency signal to the power amplifier.

[0079] In step 201, the input matching unit configures the source impedance of the input matching unit to be 50 ohms when receiving an input radio frequency signal.

[0080] Step 202: After receiving the radio frequency signal, the power amplifier amplifies the radio frequency signal and outputs it to the input port of the harmonic control circuit.

[0081] Step 203: The radio frequency signal in the harmonic control circuit is firstly short-circuited by the third harmonic, and then opened by the second harmonic, and then output through the output terminal of the harmonic control circuit.

[0082]Specifically,...

Embodiment 3

[0088] like Figure 7 As shown, it is a schematic structural diagram of a signal transmitter including an inverse Class-F power amplifier according to Embodiment 3 of the present invention. The signal transmitter also includes: a pre-distortion processing unit 61 and a feedback unit 62, wherein:

[0089] The pre-distortion processing unit 61 is used to perform pre-distortion processing on the received radio frequency signal, and output it to the inverse class F power amplifier; and receive the parameter information of the sample point signal generated by the feedback unit, and use the parameter information to perform pre-distortion coefficients Adjust, and pre-distort the received next radio frequency signal by using the adjusted pre-distortion coefficient, and then output it to the inverse class F power amplifier;

[0090] The inverse class F power amplifier 63 is used for outputting the received radio frequency signal after predistortion processing after power amplification ...

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Abstract

The invention discloses a reverse F-type power amplifier and an emitter as well as a processing method. The main contents are that the reverse F-type power amplifier comprises a power amplifying part, and a harmonic wave control circuit comprising a third harmonic wave short-circuit circuit and a second harmonic wave open-circuit circuit; after being amplified by the power amplifier, the input radio frequency signal is input to the harmonic wave control circuit through the input end of the harmonic wave control circuit; in the harmonic control circuit, the input radio frequency signal passes by the third harmonic wave short-circuit circuit and the second open-circuit circuit in sequence, and is output by the output end of the harmonic wave control circuit; and the linear effect of an impedance micro-strip on the radio frequency is reduced, the non-linear feature of the power amplifier is effectively corrected, the effect on VBW (Video Band Width) of the power amplifier caused by the inductive effect of the impedance micro-strip in the prior art is effectively reduced, and the linear effect of the radio frequency signal amplified by the power amplifier is improved.

Description

technical field [0001] The invention relates to radio frequency power amplification technology, in particular to an inverse class F power amplifier, a transmitter and a processing method. Background technique [0002] With the development of mobile communication, a large number of radio frequency power amplifiers are widely used in various wireless communication transmission equipment. Since the current multi-carrier technology is used for signal transmission, and the carrier will generate a large peak-to-average ratio during synthesis, resulting in extremely poor nonlinear effects of the signal, this puts forward high requirements on the linear performance of wireless communication transmission equipment . [0003] In the prior art, the power back-off technology, the feed-forward technology and the pre-distortion technology are common technologies for realizing the linearization of the power amplifier. like figure 1 As shown, it is the circuit schematic diagram of a trad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03F3/20H03F3/189H03F1/32
Inventor 刘江涛张占胜蒋祥茂谢路平林锡贵
Owner COMBA TELECOM SYST CHINA LTD
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