Analysis of the behaviours of phase and amplitude mismatch compensators to achieve 82.5 dB image rejection ratio

This article presents an experiment to analyse the behaviour of phase and amplitude mismatch compensators in quadrature receivers. The experiment shows that the input signal level and convergence time affect image rejection ratio (IRR) and signal to noise and distortion ration (SNDR). Based on the f...

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Bibliographic Details
Published in:International journal of electronics 2010-05, Vol.97 (5), p.553-568
Main Authors: Chan, Ragnarok Pak-Kee, Choy, Oliver Chiu-Sing, Pun, Kong-Pang, Chan, Cheong-Fat, Leung, Ka Nang
Format: Article
Language:English
Subjects:
Amplitudes
Applied sciences
Circuit properties
Compensation
Compensators
Convergence
Digital circuits
digital low-IF
Electric, optical and optoelectronic circuits
Electronic circuits
Electronics
Exact sciences and technology
Frequencies
image rejection
Intermediate frequencies
mismatch compensation
quadrature receivers
Radiocommunication specific techniques
Radiocommunications
Receivers
Receivers & amplifiers
Rejection
Signal to noise ratio
software radio
Telecommunications
Telecommunications and information theory
Transmitters. Receivers
Citations: Items that this one cites
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Description
Summary:This article presents an experiment to analyse the behaviour of phase and amplitude mismatch compensators in quadrature receivers. The experiment shows that the input signal level and convergence time affect image rejection ratio (IRR) and signal to noise and distortion ration (SNDR). Based on the findings, design guidelines are suggested and an exceptionally high 82.5 dB IRR is demonstrated in a digital low intermediate frequency (low-IF) Weaver receiver constructed using off-the-shelf components, whereas existing mismatch compensation techniques can only achieve 50 to 65 dB IRR.
ISSN:0020-7217
1362-3060
DOI:10.1080/00207210903433833