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Envelope impedance control structure and power amplifier structure

An impedance control and control circuit technology, applied in amplifiers, improving amplifiers to expand bandwidth, improving amplifier input/output impedance, etc., can solve problems such as the difference in frequency band impedance, achieve low impedance characteristics, and meet the effect of signal envelope bandwidth

Active Publication Date: 2020-09-11
CHONGQING UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: in order to solve the problem of the impedance difference in the whole frequency band, the present invention proposes an envelope impedance control structure, a power amplifier structure

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  • Envelope impedance control structure and power amplifier structure
  • Envelope impedance control structure and power amplifier structure
  • Envelope impedance control structure and power amplifier structure

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Embodiment Construction

[0025] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0026] In the description of the present invention, it should be noted that the terms "first" and "second" are used for description purposes only, and should not be understood as indicating or implying relative importance.

[0027] Similar to the control of RF frequency in the bias network, the power amplifier linearity index is strongly related to the memory effect of the power amplifier itself, so the control of the envelope impedance is v...

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Abstract

The invention relates to the technical field of electronic information, and discloses an envelope impedance control structure and a power amplifier structure. The envelope impedance control structurecomprises a matching network, a power supply network and an envelope impedance control network; one end of the matching network is a signal input end, the other end of the matching network is a signaloutput end, and the matching network is used for impedance conversion; one end of the power supply network is connected into the matching network, the other end of the power supply network is connected with a power supply, and the power supply network is used for providing direct-current bias for the transistor; one end of the envelope impedance control network is connected with the matching network, the other end of the envelope impedance control network is grounded, and the envelope impedance control network is used for controlling the impedance of an envelope frequency band. According to the power amplifier structure, envelope impedance control structures are arranged at the input end and the output end of a transistor. According to the envelope impedance control network, the envelopeimpedance is flexibly controlled under the condition that the fundamental wave working band of the power amplifier is not influenced, and the envelope impedance can be always lower than a certain threshold value in a broadband range.

Description

technical field [0001] The invention relates to the technical field of electronic information, in particular to an envelope impedance control structure and a power amplifier structure. Background technique [0002] With the development of mobile communication and the increasing amount of information, it is required to increase the bandwidth of the transmitted signal to increase the amount of information transmitted per unit time. This requires the power amplifier (referred to as "power amplifier") to have broadband signal transmission capabilities, and the total The bandwidth reaches 500MHz; and the power, efficiency, linearity and other indicators of the power amplifier determine the working distance and size of the wireless communication equipment, and the design method of the power amplifier with excellent comprehensive performance has great research value. In the future 6G communication, with the continuous change of user needs, the envelope bandwidth of signals under mu...

Claims

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Application Information

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IPC IPC(8): H03F1/42H03F1/56
CPCH03F1/42H03F1/565
Inventor 代志江冉雄博李明玉靳一徐常志
Owner CHONGQING UNIV
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