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Push-pull power amplification circuit

A technology of power amplifier circuit and differential amplifier circuit, which is applied in the field of radio frequency and can solve the problems of low power added efficiency of radio frequency power amplifier

Active Publication Date: 2021-07-30
RADROCK (SHENZHEN) TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Embodiments of the present invention provide a push-pull power amplifier circuit to solve the problem of low power added efficiency of radio frequency power amplifiers

Method used

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Embodiment Construction

[0047] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are 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 creative efforts fall within the protection scope of the present invention.

[0048] It should be understood that the invention can be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In the drawings, the size and relative sizes of layers and regions may be exaggerated for clarity, and like reference numeral...

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Abstract

The invention discloses a push-pull power amplification circuit. The push-pull power amplification circuit comprises a signal input end, a signal output end and a differential amplification circuit, the differential amplification circuit comprises a first amplification branch and a second amplification branch which are arranged in parallel; the first amplification branch comprises a first amplification transistor, and the second amplification branch comprises a second amplification transistor; the output end of the first amplification transistor is connected with the input end of the second amplification transistor through the first diode circuit, and the output end of the first amplification transistor and the input end of the second amplification transistor have the same phase; the output end of the second amplification transistor is connected with the input end of the first amplification transistor through a second diode circuit; and the output end of the second amplification transistor and the input end of the first amplification transistor have the same phase. According to the technical scheme, the power additional efficiency of the push-pull power amplification circuit can be improved.

Description

technical field [0001] The invention relates to the field of radio frequency technology, in particular to a push-pull power amplifier circuit. Background technique [0002] Push-pull power amplifiers are key components in wireless communication systems, and their loss and efficiency have always been the focus of attention. Especially with the development of the third-generation mobile communication system (such as WCDMA, CDMA2000), the power loss of the push-pull power amplifier has become an important performance index to measure the operating efficiency of the power amplifier. The loss of the push-pull power amplifier circuit is very important for the entire communication system. It plays a vital role. However, due to its own characteristics, the amplifying transistor in the existing push-pull power amplifier will inevitably generate parasitic capacitance during operation, resulting in low overall power added efficiency. Contents of the invention [0003] An embodiment...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03F3/26
CPCH03F3/26Y02D30/70
Inventor 邱皓川胡自洁张海兵何森航濮天鸿田旭方信维倪建兴
Owner RADROCK (SHENZHEN) TECH CO LTD
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