Using the fractional Hilbert transform to model a quadrature IF receiver

Authors:
Ernest Seagraves;Bruce Walcott
Affiliations:
DSP Techniques, Inc., Research and Development, Middletown, MD;University of Kentucky, Department of Electrical Engineering, Lexington, KY
Venue:
ICC'08 Proceedings of the 12th WSEAS international conference on Circuits
Year:
2008

Citing 2
Cited 0

Advanced methods for I/Q imbalance compensation in communicationreceivers

IEEE Transactions on Signal Processing
On the architecture and performance of a hybrid image rejection receiver

IEEE Journal on Selected Areas in Communications

Quantified Score

Hi-index	0.00

Visualization

Abstract

The quadrature IF receiver topology is utilized in direct conversion and low-IF receivers. In theory the quadrature IF topology eliminates the need for the image filters required by the heterodyne topology. In practice mismatch in analog components between the I/Q signal paths allows leakage of image energy into the desired signals band. This leakage limits the performance of the quadrature IF receiver. This paper utilizes the fractional Hilbert transform to analyze the quadrature IF topology resulting in a two-input two-output LTI equivalent receiver. The model can be used to analyze wideband mismatch compensation algorithms for quadrature IF receivers.