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Mixer impairment correction based on volterra series

A mixer, offset correction technology, applied in high frequency amplifiers, radio frequency amplifiers, amplifiers with semiconductor devices/discharge tubes, etc., can solve problems such as multi-nonlinearity

Inactive Publication Date: 2017-03-08
INTEL IP CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Unfortunately, CMOS active mixers suffer from more nonlinear problems than passive mixers

Method used

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  • Mixer impairment correction based on volterra series
  • Mixer impairment correction based on volterra series
  • Mixer impairment correction based on volterra series

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Experimental program
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Embodiment Construction

[0021] The present disclosure will now be described with reference to the accompanying drawings, wherein like numerals are used to refer to like elements throughout, and the structures and devices shown therein are not necessarily drawn to scale. As used herein, the terms "component," "system," "interface," etc., are intended to refer to computer-related entities, hardware, software (eg, in execution), and / or firmware. For example, a component can be a processor, a process running on a processor, a controller, an object, an executable, a program, a storage device, and / or a computer with a processing device. By way of illustration, applications running on servers and servers may also be components. One or more components can reside within a process and a component can be localized on one computer and / or distributed between two or more computers. A set of elements or a set of other components may be described herein, where the term "a set" may be interpreted as "one or more". ...

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Abstract

The invention provides mixer impairment correction based on a volterra series. Techniques for compensating for signal impairments introduced by a mixer are discussed. One example system employing such techniques can include mixer predistortion circuitry configured to receive signal in-phase (I) and signal quadrature (Q) components of a signal and to generate a mixer predistortion signal based at least in part on the signal I and Q components, wherein the mixer predistortion signal compensates for nonlinearities caused by a mixer that upconverts the signal. Optionally, imbalance correction circuitry to compensate for gain and phase imbalance and / or skew correction circuitry to compensate for gain and phase skew can also be included.

Description

technical field [0001] The present disclosure relates to wireless technologies, and more particularly, to techniques for compensating for impairments introduced to signals by mixers. Background technique [0002] Mixing signals by either passive mixers or active mixers (for example, upconverting a baseband signal to a radio frequency (RF) signal) introduces various impairments to the signal, such as non-linearity, memory effects, in-phase ( I) and quadrature (Q) gain and phase offsets, and offset offsets. However, active mixers are a key component of the RF front end. In the case of high conversion gain, active mixers provide better post-stage noise rejection than passive mixers. Unfortunately, CMOS active mixers suffer from more nonlinear problems than passive mixers. Contents of the invention [0003] A first aspect of the invention provides a system configured for a transmitter comprising a mixer predistortion circuit configured to receive a signal in-phase (I) compo...

Claims

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Application Information

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IPC IPC(8): H04B1/04H04B1/12H03D7/16
CPCH03D7/16H04B1/0475H04B1/12H03F1/3282H03F3/245H03F3/19H03F2201/3224H03F2200/336H03F2200/451H04B2001/0425H03F1/3258H03F3/21
Inventor 艾维·苏利玛斯基迈克尔·肯纳伊泰·埃莫格
Owner INTEL IP CORP