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Performance analysis of a SAW-based group demultiplexer for on-board processing communications satellites

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1 Author(s)
C. Loo ; Commun. Res. Center, Ottawa, Ont., Canada

Derivations of the chirp Fourier transforms that can be easily implemented with surface acoustic wave (SAW) devices are described. Two configurations-the multiply-convolve-multiply (MCM) and convolve-multiply-convolve (CMC)-are treated. The derivations show that one gives the Fourier transform precisely and the other is an approximation, although a good one under most circumstances. Numerical results for the CMC are given. The results show that windowing is an effective means of reducing the sidelobe level of the output transform, but it is at the expense of widening the main lobe

Published in:

IEEE Transactions on Communications  (Volume:41 ,  Issue: 7 )