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Proceedings Paper

Rejection of interference and near-field coupled LNA-noise on FPA-fed multibeam dish antennas using 3D analog filters
Author(s): Arjuna Madanayake; Chamith Wijenayake; Thushara Gunarathne; Leo Belostotski; Yongsheng Xu; Len Bruton
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Paper Abstract

A three dimensional (3-D) spatio-temporal analog signal processing scheme is presented for the selective removal of off-dish interference and noise from focal plane array (FPA) received signals. The method exploits specific geometrical properties of the 3-D spatio-temporal frequency spectrum of FPA signals to perform the filtering operation. A 3-D infinite impulse response (IIR) filter having a cone-shaped filter passband in the 3-D spatio-temporal frequency space is employed to extract the spectra of desired FPA signals while rejecting the spectral components from undesired off-dish interference and coupled noise from front-end electronics. A proof-of-concept example is provided by considering the filtering operation in 3-D spatio-temporal frequency domain.

Paper Details

Date Published: 31 May 2013
PDF: 7 pages
Proc. SPIE 8714, Radar Sensor Technology XVII, 871412 (31 May 2013); doi: 10.1117/12.2016093
Show Author Affiliations
Arjuna Madanayake, The Univ. of Akron (United States)
Univ. of Calgary (Canada)
Chamith Wijenayake, The Univ. of Akron (United States)
Thushara Gunarathne, Univ. of Calgary (Canada)
Leo Belostotski, Univ. of Calgary (Canada)
Yongsheng Xu, Univ. of Calgary (Canada)
Len Bruton, Univ. of Calgary (Canada)


Published in SPIE Proceedings Vol. 8714:
Radar Sensor Technology XVII
Kenneth I. Ranney; Armin Doerry, Editor(s)

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