Low-noise amplifier with multi-configurable bypass mode

A low-noise amplifier, bypass mode technology, applied in amplifiers, RF amplifiers, gated amplifiers, etc., can solve the problems of low-noise amplifier gain compression, harmonic interference, deterioration of receiving sensitivity, etc.

Inactive Publication Date: 2016-09-28
MAXSCEND MICROELECTRONICS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the signal is too large, it is easy to cause the gain compression of the low noise amplif...

Method used

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  • Low-noise amplifier with multi-configurable bypass mode
  • Low-noise amplifier with multi-configurable bypass mode
  • Low-noise amplifier with multi-configurable bypass mode

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Embodiment Construction

[0042] The present invention will be further described below in conjunction with specific drawings.

[0043] The low-noise amplifier with multiple configurable bypass modes in the present invention can be designed and realized with various types of active and passive devices. The specific implementation manner of the low noise amplifier with multiple configurable bypasses realized by using N / P channel metal oxide semiconductor (NMOS / PMOS) transistors is described below.

[0044] These specific implementations are intended to make the purpose, technical solutions and advantages of the present invention more clear, and do not represent all implementations included in the idea of ​​the present invention.

[0045] As shown in Figure 1, the low-noise amplifier 001 with multi-configurable bypass mode includes an amplification stage 003, an isolation stage 004, a load stage 005, a feedback matching stage 007, an input matching stage 002, an output matching stage 006 and a multiple C...

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Abstract

The invention relates to a low-noise amplifier with a multi-configurable bypass mode. The low-noise amplifier is characterized by comprising an amplification stage, an isolation stage, a load stage, an input matching stage, an output matching stage, and a multi-configurable bypass module, wherein the multi-configurable bypass module provides a low-impedance circuit from a radio frequency input end to a radio frequency output end, the low-impedance circuit and an LNA amplification circuit are mutually exclusive, namely at most only one of the two circuits is valid; the low-noise amplifier amplifies a radio frequency signal when the LNA enables, and directly outputs the radio frequency signal from the radio frequency output end when the bypass enables; when the low-impedance circuit and the LNA amplification circuit are closed, the LNA is in a closed mode; the amplification stage and the load stage are connected via the isolation stage, the input node of the multi-configurable bypass module is located at the input end of the input matching stage or between the output end of the input matching stage and the input end of the amplification stage, and the output point of the multi-configurable bypass module is located at the input end or output end of the output matching stage. The low-noise amplifier is improved in design efficiency and flexibility.

Description

technical field [0001] The invention relates to an integrated circuit, in particular to a low noise amplifier (LNA) with multiple configurable BYPASS (bypass) modes. Background technique [0002] With the increasing popularity of wireless communication, spectrum resources are becoming increasingly tight, and the space wireless environment is becoming more and more complex. In order to receive signals effectively, a low noise amplifier becomes an essential module in the RF front end. However, for mobile devices, the wireless environment they live in is not static, and the signal strength received by the antenna is closely related to factors such as the distance from the wireless base station. When the signal is too large, it is easy to cause the gain compression of the low noise amplifier, and even generate harmonic interference, which seriously deteriorates the receiving sensitivity. [0003] Therefore, a bypass module must be integrated in the low noise amplifier, so that...

Claims

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Application Information

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IPC IPC(8): H03F3/195H03F3/72H03F1/26
CPCH03F3/195H03F1/26H03F3/72H03F2200/372H03F2200/451
Inventor 刘文永
Owner MAXSCEND MICROELECTRONICS CO LTD
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