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Circuit structure for improving harmonic performance of radio frequency power amplifier

A circuit structure and radio frequency power technology, applied in power amplifiers, high-frequency amplifiers, improving amplifiers to reduce nonlinear distortion, etc., can solve the problems of large harmonic performance fluctuations of power amplifiers, bulky power amplifiers, and low product yields. , to improve linearity, good harmonic performance, and achieve the effect of absorption

Inactive Publication Date: 2015-04-29
GUANGDONG UNIV OF TECH
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  • Application Information

AI Technical Summary

Problems solved by technology

The use of λ / n transmission lines makes the designed power amplifier too bulky, and the harmonic processing method that relies on the MMIC process makes the harmonic performance of the designed power amplifier fluctuate greatly, and the product yield rate is low, which is not conducive to mass production

Method used

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  • Circuit structure for improving harmonic performance of radio frequency power amplifier
  • Circuit structure for improving harmonic performance of radio frequency power amplifier
  • Circuit structure for improving harmonic performance of radio frequency power amplifier

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Embodiment Construction

[0026] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.

[0027] Such as figure 1 A circuit structure for improving the harmonic performance of a power amplifier provided by the present invention consists of four parts: a second harmonic resonance suppression network 101, a third harmonic resonance suppression network 102, a higher harmonic suppression network 103 and an inductor 105 , inductor 106, capacitor C3 and capacitor C4 constitute a two-stage low-pass LC output matching network.

[0028] The second harmonic suppression network 101 and the two-stage low-pass LC output composed of 102 , 103 , 105 , 106 are matched and connected to the collector of the power amplifier tube 104 .

[0029] The invention provides a second harmonic resonance suppression network in a circuit structure for improving the harmonic performance of a power amplifier, which is ...

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Abstract

The invention relates to the technical field of communications, and particularly relates to a circuit structure for improving the harmonic performance of a radio frequency power amplifier. The circuit structure comprises a radio-frequency power amplifier tube, a secondary harmonic suppression network, a triple harmonic suppression network, a higher harmonic suppression network, a first matching inductance, a second matching inductance and a blocking capacitor, wherein the first matching inductance, the second matching inductance, the triple harmonic suppression network and the higher harmonic suppression network form a low-pass output matching network of the power amplifier and the low-pass output matching network is connected to a collector of the power amplifier tube; the secondary harmonic suppression network is connected to the collector of the power amplifier tube, and is independent from the output matching network, the suppression frequency can be regulated, the triple harmonic suppression network and the higher harmonic suppression network are included in the output matching network, and the higher harmonic suppression frequency can be regulated. According to the above content, the circuit structure provided by the invention is simple in structure and strong in flexibility; the harmonic component generated by the radio frequency power amplifier is effectively suppressed and the performance of the power amplifier is improved.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a circuit structure for improving the harmonic performance of a radio frequency power amplifier. Background technique [0002] With the rapid development of mobile wireless communication technology and the widespread popularization of handheld wireless communication devices, the requirements of wireless communication system standards for transmitters are becoming more and more stringent. As the main component of the transmitter, the power amplifier is mainly responsible for amplifying the small signal sent by the front stage without distortion to drive the antenna to send the signal out. Its efficiency plays a decisive role in the power consumption of the whole transmitter, and at the same time, the linearity of the power amplifier affects the dynamic range of the whole machine. In order to improve the working efficiency of the traditional power amplifier, the final stage ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03F1/32H03F3/20H03F3/189
Inventor 陈思弟章国豪郑耀华张志浩黄亮
Owner GUANGDONG UNIV OF TECH
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