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A Symmetrical Low Noise Isolation Distribution Amplifier Circuit

An amplifying circuit and low-noise technology, applied in the field of symmetrical low-noise isolation and distribution amplifier circuits, can solve the problems of inability to drive multiple load devices and general driving ability, and achieve convenient and adjustable output amplitude, simple debugging, and signal-to-noise ratio. high effect

Active Publication Date: 2021-10-08
WUHAN INST OF PHYSICS & MATHEMATICS CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, single high-precision frequency sources, such as atomic clocks, high-stable crystal oscillators, etc., have the characteristics of high time-frequency accuracy and low phase noise, but their driving capabilities are average and cannot drive multiple load devices

Method used

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  • A Symmetrical Low Noise Isolation Distribution Amplifier Circuit
  • A Symmetrical Low Noise Isolation Distribution Amplifier Circuit

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Embodiment Construction

[0028] In order to facilitate those of ordinary skill in the art to understand and implement the present invention, the present invention will be described in further detail below in conjunction with the examples. It should be understood that the implementation examples described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0029] A symmetrical low-noise isolation distribution amplifier circuit, including a preamplifier module, a gain amplifier module and an output buffer module,

[0030] The preamplifier module includes a first preamplifier, a second preamplifier, a third preamplifier and a fourth preamplifier,

[0031] The gain amplification module includes a first gain amplifier, a second gain amplifier, a third gain amplifier and a fourth gain amplifier,

[0032] The output buffer module includes a first buffer amplifier, a second buffer amplifier, a third buffer amplifier, a fourth buffer amplif...

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Abstract

The invention discloses a symmetrical low-noise isolation distribution amplification circuit, which includes a preamplification module, a gain amplification module and an output buffer module, the preamplification module includes first to fourth preamplifiers, and the gain amplification module includes first to fourth preamplifiers. The fourth gain amplifier, the output buffer module includes the first to eighth buffer amplifiers, the pre-amplification module divides the RF input signal into two and then merges them into one; The buffer module is used for energy storage; the gain amplifier module realizes secondary isolation distribution. The invention reduces the additional noise of the circuit through the operational amplifier circuit combined in a symmetrical structure, has high isolation, is easy to debug, and has low cost.

Description

technical field [0001] The invention relates to the fields of microwave and time frequency, and more specifically relates to a symmetrical low-noise isolation distribution amplifier circuit, which can be widely used in the fields of radar, atomic frequency standard, frequency source and the like. Background technique [0002] With the development of information technology, high-precision frequency sources are more and more widely used in military and civilian fields such as communications, aerospace, and national defense. And as the complexity of various systems increases, there are more devices that need a unified time frequency in the same system. However, single high-precision frequency sources, such as atomic clocks and high-stable crystal oscillators, have the characteristics of high time-frequency accuracy and low phase noise, but their driving capabilities are average and cannot drive multiple load devices. At the same time, in order to prevent multiple load devices ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03F1/26H03F3/68
CPCH03F1/26H03F3/68
Inventor 秦蕾余钫吴奎陈智勇金鑫高伟
Owner WUHAN INST OF PHYSICS & MATHEMATICS CHINESE ACADEMY OF SCI
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