ANALYSIS AND EXPERIMENTS ON THE FREQUENCY-INDEPENDENT STRONG-SIGNAL SUPPRESSOR (FISSS)

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Authors
  1. Sychaleum, D.
  2. Felstead, E.B.
  3. Morin, G.A.
Corporate Authors
Communications Research Centre, Ottawa ONT (CAN);Defence Research Establishment Ottawa, Ottawa ONT (CAN)
Abstract
The frequency-independent strong-signal suppressor (FISSS) uses nonlinear processing plus cancellation techniques to provide substantial inteference suppression. However, only laboratory proof of its operation existed. Although considerable effort went into trying to determine the principle of operation, this principle was not found. In this report, some analytical and simulation attacks on this problem are described. Extensive laboratory measurements were made on devices operating at 1.5 GHz and 10 GHz. The 10 GHz device was combined with direct-sequence spread spectrum, and had measured processing gains of about 12 dB against CW and frequency-modulated single tones. The experimental highlight was the successful suppression of noise interference of between 6 and 12 dB, depending upon the noise bandwidth.
Keywords
FISSS (Frequency Independent Strong Signal Suppressor);Interference suppression;Antenna spatial techniques;Intermodulation
Report Number
CRC-98-006;DREO-98-329 —
Date of publication
01 Nov 1998
Number of Pages
57
DSTKIM No
99-00230
CANDIS No
510093
Format(s):
Hardcopy;Document Image stored on Optical Disk

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