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Broadband bandpass filter power amplifier based on frequency selective coupling

A frequency selective, power amplifier technology, used in amplifiers, amplifiers with semiconductor devices/discharge tubes, improving amplifiers to expand bandwidth, etc., to reduce area, improve work efficiency and work bandwidth.

Active Publication Date: 2019-01-08
SOUTH CHINA UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Both designs have high selectivity and an overall power-added efficiency of more than 68%, but the bandwidth with power-added efficiency greater than 60% is only 5.4%

Method used

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  • Broadband bandpass filter power amplifier based on frequency selective coupling
  • Broadband bandpass filter power amplifier based on frequency selective coupling
  • Broadband bandpass filter power amplifier based on frequency selective coupling

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Embodiment Construction

[0021]In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is an embodiment of a part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0022] The terms "first", "second", "third" and "fourth" in the specification and claims of the present invention and the above drawings are used to distinguish different objects, rather than to describe a specific order. Furthermore, the terms "include" and "have", as well as any variations thereof, are intended to cover a non-exclusive inclusio...

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Abstract

The invention discloses a wideband band-pass filter power amplifier based on frequency selective coupling, includes a gate DC bias circuit, an input impedance matching circuit, a power amplifier transistor, and an output impedance matching circuit. The output impedance matching circuit comprises a tuned microstrip line connected between the power amplifier transistor and the bandpass filter, and abandpass filter composed of a first resonator and a second resonator coupled in parallel. The tuned microstrip line is connected between the power amplifier transistor and the bandpass filter. The invention utilizes a broadband bandpass filter based on frequency selective coupling, and considers the extended continuous type theory and the filter synthesis theory, thereby effectively improving theworking efficiency and the bandwidth of the filter power amplifier, and simultaneously effectively reducing the complexity and the area of the impedance matching circuit in the traditional inverse F-type power amplifier.

Description

technical field [0001] The present invention relates to the technical field of power amplifiers, more specifically, to a frequency selective coupling-based broadband bandpass filter power amplifier and system. Background technique [0002] With the advancement of communication technology, wireless communication system standards have the characteristics of high data rate, large user capacity, and low power consumption. As a key component of the RF front-end, the power amplifier has a great influence on the performance of the transmitter. Therefore, power amplifiers with high efficiency and broadband operation have been developed considerably. [0003] In order to improve efficiency, various switching power amplifiers have been proposed, for example, class D power amplifiers, class E power amplifiers and class F power amplifiers. Theoretically, the efficiency of the above power amplifiers can reach 100%. Doherty power amplifiers and envelope tracking architectures are used t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03F3/217H03F1/42H03H7/38H03H7/12
CPCH03F1/42H03F3/217H03H7/12H03H7/38H01P1/20363H03F1/0205H03F3/2171H03F2200/222H03F2200/387H01P7/082H03F2200/171H03F2200/423
Inventor 李园春陈钦创薛泉
Owner SOUTH CHINA UNIV OF TECH
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