Broadband matching circuit for improving harmonic performance and power amplifier

A power amplifier and broadband matching technology, which is applied in the direction of improving the amplifier to expand the bandwidth, improving the amplifier to increase efficiency, improving the amplifier to reduce nonlinear distortion, etc., can solve the problem of communication equipment spectrum bandwidth congestion, etc., to improve the overall output efficiency, The effect of reducing interference and flexible control

Pending Publication Date: 2019-03-08
DONGGUAN UNIV OF TECH
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Problems solved by technology

At present, spectrum resources are very scarce, and the spectrum bandwidth occupied by various communication devices is also very crowded

Method used

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  • Broadband matching circuit for improving harmonic performance and power amplifier
  • Broadband matching circuit for improving harmonic performance and power amplifier
  • Broadband matching circuit for improving harmonic performance and power amplifier

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Embodiment Construction

[0021] In order to describe the content, structural features, achieved goals and effects of the present invention in detail, the following will be described in detail in combination with the embodiments and accompanying drawings.

[0022] see Figure 1 to Figure 5 , the present invention discloses a broadband matching circuit 100 for improving harmonic performance, which is connected between the power amplification stage 210 of the power amplifier and the signal output terminal, and the broadband matching circuit 100 for improving harmonic performance includes a choke coil L0, respectively resonant At least two second harmonic suppression networks 1 at different frequency points, at least two third harmonic suppression networks 2 resonant at different frequency points, and a broadband matching network 3, wherein the choke coil L0 is connected to the power amplification stage 210 between the output terminals of the power supply VCC; at least two second harmonic suppression netw...

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Abstract

The invention discloses a broadband matching circuit for improving harmonic performance, which is connected between a power amplifier stage and a signal output end of a power amplifier. The broadbandmatching circuit comprises a choking coil, at least two second harmonic suppression networks which are respectively resonant at different frequency points, at least two third harmonic suppression networks which are respectively resonant at different frequency points, and a broadband matching network, wherein the choking coil is connected between the output end of the power amplifier stage and a power supply; the at least two second harmonic suppression networks are respectively connected between the output end of the power amplifier stage and the ground, and the output ends of the at least twosecond harmonic suppression networks are connected to the input end of the broadband matching network; the at least two third harmonic suppression networks are respectively connected between the output end of the broadband matching network and the ground, and the output ends of the at least two third harmonic suppression networks are connected to the signal output end of the power amplifier. According to the broadband matching circuit, the resonant frequency points of the second harmonic suppression networks and the third harmonic suppression networks can be flexibly controlled, and the efficiency of the power amplifier is improved.

Description

technical field [0001] The invention relates to the technical field of power amplifiers, in particular to a broadband matching circuit with improved harmonic performance and a power amplifier with the broadband matching circuit with improved harmonic performance. Background technique [0002] As one of the most critical modules in a wireless transceiver, the RF power amplifier is also the module that consumes the most energy. When the input signal increases to a certain level, the RF power amplifier will produce a series of harmonic components due to its operation in the nonlinear region, which greatly affects the performance of the power tube amplifier. Moreover, the traditional RF power amplifier is usually matched with a single frequency point and the matching network is narrow. The single frequency point network makes the transmission efficiency and effective power depend on the matching of the load, causing energy to be lost in the form of heat, and the narrow matching ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03F1/32H03F1/48H03F1/02
CPCH03F1/02H03F1/32H03F1/48
Inventor 蓝焕青胡耀华
Owner DONGGUAN UNIV OF TECH
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