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Broadband large dynamic range logarithmic detector

A large dynamic range, logarithmic detector technology, used in high-frequency amplifiers, electrical components, transmission systems, etc., can solve problems such as difficulty in realizing high-performance detector circuits, and achieve low power consumption, small temperature drift, and characteristic frequency. high effect

Active Publication Date: 2019-08-02
58TH RES INST OF CETC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a logarithmic detector with wideband and large dynamic range, so as to solve the problem that it is difficult to realize a high-performance detector circuit at present

Method used

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Embodiment 1

[0029] The invention provides a logarithmic detector with wideband and large dynamic range, its structure is as follows figure 1shown. The wideband large dynamic range logarithmic detector includes a limiting amplifier module LA, a rectifier module DET and an adder module Σ; specifically, the limiting amplifier module LA is used to limit and amplify the input signal VIN; the rectifier The module DET is used for converting the input signal of the limiting amplifier module LA into a detection current; the adder module Σ is used for summarizing the detection currents of the plurality of rectifier modules DET to the resistor R0 to convert the output voltage VO. Further, the wideband large dynamic range logarithmic detector also includes a DC offset elimination module, a temperature compensation module, a bandgap reference module and a bias module; the DC offset elimination module is used to adjust and reduce the limiting amplifier module The DC level error of the checking signal ...

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Abstract

The invention discloses a broadband large dynamic range logarithmic detector, and belongs to the technical field of broadband detectors. The broadband large dynamic range logarithmic detector comprises an amplitude limiting amplifier module, a rectifier module and an adder module, wherein the limiting amplifier module is used for carrying out limiting amplification on an input signal; the rectifier module is used for converting an input signal of the limiting amplifier module into a detection current; and the adder module is used for gathering the detection currents of the plurality of rectifier modules to a resistor and converting the detection currents into the voltage output. The broadband large dynamic range logarithmic detector has the functions of wide frequency range input and largedynamic range output, can cover a wider signal transmission rate and a larger signal power range, and meets the strict requirements of systems, such as a high-integration-level receiver, a high-precision receiver, a high-sensitivity receiver, a large dynamic range receiver, etc., on the performance of the detector.

Description

technical field [0001] The invention relates to the technical field of broadband detectors, in particular to a logarithmic detector with wide-band and large dynamic range. Background technique [0002] The log detector technique is a technique for logarithmically converting an RF power signal to baseband. The detector device can be used as an independent detector chip for signal processing, broadcasting, television, radar, handheld electronic equipment and other fields, and can also be used as a sub-module for RF analog front-end to realize the conversion of RF input power signals into baseband signals. Features. [0003] With the development of the electronic information industry and the advancement of 5G, especially the development of electronic products, the requirements for the accuracy, sensitivity and dynamic range of the receiving equipment are getting higher and higher. As the key module of the receiver, the detector determines the Important factors such as the sen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/16H03F3/19
CPCH03F3/19H04B1/16
Inventor 刘雪莲张沁枫蒋颖丹
Owner 58TH RES INST OF CETC
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