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Inductor-free broadband low-noise amplifier

A broadband low-noise, amplifier technology, applied to amplifiers, improved amplifiers to expand bandwidth, improved amplifiers to improve efficiency, etc., can solve problems such as significant parasitic effects, poor matching of circuit layout, and deterioration of noise performance, and achieve good matching and gain Flexible control, the effect of reducing the area

Pending Publication Date: 2021-01-15
CHENGDU CORPRO TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a non-inductive broadband low noise amplifier, which can overcome the problems of traditional broadband low noise amplifiers such as noise performance deterioration, significant parasitic effects, and poor circuit layout matching due to the use of passive components.

Method used

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  • Inductor-free broadband low-noise amplifier
  • Inductor-free broadband low-noise amplifier
  • Inductor-free broadband low-noise amplifier

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Experimental program
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Effect test

Embodiment 1

[0037] The physical parameter selection of concrete PMOS, NMOS tube in the circuit of the present invention is as follows:

[0038] The first NMOS transistor MN1 and the first PMOS transistor MP1 take the same width-to-length ratio, the value of which is 26.2 / 1, and the value of fingers is 100;

[0039] The second NMOS transistor MN2 and the second PMOS transistor MP2 take the same width-to-length ratio, the value of which is 26.2 / 1, and the value of fingers is 80;

[0040] The third NMOS tube MN3 and the third PMOS tube MP3 have the same width-to-length ratio, the value is 38.5 / 1, and the value of fingers is 20;

[0041] The fourth NMOS transistor MN4 and the fourth PMOS transistor MP4 have the same width-to-length ratio, the value of which is 38.5 / 1, and the value of fingers is 30;

[0042] The operating voltage of the circuit of the present invention is 1.3V or 1.8V

[0043] Show that the working frequency band of the present invention is 70MHz~6.0GHz, the in-band gain is...

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Abstract

The invention provides an inductor-free broadband low-noise amplifier, which comprises an input end capacitor, a main amplifier unit, an intermediate stage auxiliary amplifier unit, an output stage auxiliary amplifier unit and an output end capacitor, and is characterized in that the input end of the input end capacitor is used as the input end of the inductor-free broadband low-noise amplifier; and the output end of the output end capacitor is used as the output end of the inductor-free broadband low-noise amplifier. According to the scheme, the area of a circuit layout is reduced, so that the integration level is improved; the overdrive voltage of each MOS transistor in the main amplifier unit can be flexibly adjusted to improve the performance of the circuit, and through the arrangementof the intermediate stage auxiliary amplifier unit and the output stage auxiliary amplifier unit, the noise of the circuit can be effectively reduced, and the gain of the circuit is improved.

Description

technical field [0001] The invention relates to the technical field of radio frequency front-end circuits, in particular to a non-inductive wideband low noise amplifier, which is directly applied to wideband radio frequency receivers. Background technique [0002] With the development of 4G / 5G technology, the design of wireless communication systems tends to choose to use broadband radio frequency transceivers. A general radio frequency receiver structure such as figure 1 As shown, the low noise amplifier, as the first-stage active circuit of the RF receiver, plays the role of receiving and amplifying the small signal from the antenna, so a certain gain is required to amplify the small signal and suppress the noise of the subsequent stage circuit, and at the same time Because it is the first-stage active circuit of the RF receiver, the noise of the low-noise amplifier will be directly superimposed on the entire RF receiver, so it is also necessary to ensure that it has a su...

Claims

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Application Information

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IPC IPC(8): H03F1/26H03F1/42H03F1/02H03F1/56
CPCH03F1/26H03F1/42H03F1/0205H03F1/56
Inventor 杨定坤耿建强邹浩郑培
Owner CHENGDU CORPRO TECH CO LTD
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