EXPERIMENTS ON DUAL BAND EHF CONTROLLED BEAM ANTENNAS FOR FREQUENCY HOPPED SIGNALS: PHASE-C

Authors
  1. Yen, J.L.
  2. Kremer, P.
  3. Amin, N.
Corporate Authors
Toronto Univ, Toronto ONT (CAN);Communications Research Centre, Ottawa ONT (CAN);Defence Research Establishment Ottawa, Ottawa ONT (CAN)
Abstract
Detailed nulling performance under various scenarios is studied. Particular attention is directed towards the comparison of dual-band and narrow-band nulling performance in a static environment. The results with 60 db dynamic range show that in static performance, dual-band nulling has no apparent advantage over narrow-band nulling alone. However, since the weighting coefficients used in the system do not have sign control, phase adjustment over 360 degree range requires setting the length of one of the two transmission lines connecting the antenna elements, thus an improper length could degrade the performance of dual-band nulling more severely. The result is not unexpected because the main aim of dual-band nulling is to have fast acting nulling under a frequency hopping environment.
Date of publication
15 Jun 1988
Number of Pages
32
DSTKIM No
89-02119
CANDIS No
60027
Format(s):
Hardcopy;Originator's fiche received by DSIS

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