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An amplifier and a wireless signal receiver comprising said amplifier

A wireless signal and amplifier technology, applied in amplifiers, high-frequency amplifiers, differential amplifiers, etc., can solve problems such as reducing the performance of wireless signal receivers

Pending Publication Date: 2019-03-26
NXP BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Interference caused by unwanted signals can degrade the performance of wireless signal receivers

Method used

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  • An amplifier and a wireless signal receiver comprising said amplifier
  • An amplifier and a wireless signal receiver comprising said amplifier
  • An amplifier and a wireless signal receiver comprising said amplifier

Examples

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Embodiment Construction

[0073] The immunity of wireless signal receivers to unwanted interference signals can be divided into two main parts:

[0074] -The inherent performance of the receiver in one or more of noise, linearity and phase noise; and

[0075] -Automatic gain control (AGC) system recognizes the presence of undesired signals and reacts in a fast way to adjust the gain of one or more amplifiers of the wireless signal receiver so that it can receive all signals even in the presence of strong undesired signals The ability to signal. AGC can adjust the gain of one or more amplifiers of the wireless signal receiver so that the receiver is in a state corresponding to the favorable trade-off between noise and linearity. The effective operation of the automatic gain control system may require an effective determination of the power of the wireless signal, which may require the provision of a power detector representing the appropriate input signal of the wireless signal received by the receiver.

[0...

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PUM

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Abstract

An amplifier comprises: a supply voltage terminal and a reference voltage terminal and an input terminal; an amplifier arrangement comprising a first and second branch coupled between the supply and reference voltage terminals, and one or more transistors configured to provide current flow through each of the branches based on the input signal at the input terminal; a first output terminal coupledto the first branch to provide a first output signal based on the current flow therethrough; and a second output terminal coupled to the second branch to provide a second output signal based on the current flow therethrough, wherein an impedance-modifying circuit is coupled to the second output terminal to provide a voltage variation in the second output signal in response to the input signal greater than a voltage variation in the first output signal in response to the input signal.

Description

Technical field [0001] The present disclosure relates to an amplifier and a wireless signal receiver including the amplifier. Specifically, the present invention relates to an amplifier having a first output terminal and a second output terminal, the first output terminal provides a first output signal with a first voltage change based on an input signal, and the second output terminal provides A second output signal with a second voltage change, wherein by means of the impedance correction circuit, the voltage change at the second output terminal in response to the input signal is greater than the first voltage change at the first output terminal in response to the input signal. Background technique [0002] In addition to being configured to receive signals, wireless signal receivers can also receive undesired signals. Interference caused by undesired signals can degrade the performance of wireless signal receivers. As an example, a wireless signal receiver for receiving wire...

Claims

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Application Information

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IPC IPC(8): H03F3/45H04B1/16
CPCH03F3/45179H04B1/16H03F2203/45201H03F2203/45202H03F1/26H03F3/189H03F3/68H03F2200/144H03F2200/294H03F2200/324H03F2200/372H03F2200/387H03F2200/451H03F2200/465H03F1/56H03F3/193H03F3/45475H03F2200/129H03F1/0205H03F2200/222H03F2203/45116
Inventor 塞巴斯蒂安·罗伯特居伊·莱莫尔
Owner NXP BV
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