CORRECTIONS FOR FREQUENCY RESPONSE DIFFERENCES IN MULTIPLE RECEIVER ARRAYS

Authors
  1. Robinson, J.L.
  2. Jenkins, R.W.
Corporate Authors
Communications Research Centre, Ottawa ONT (CAN)
Abstract
In interference-cancelling antenna array systems where the signals are combined after passing through receivers, the differential frequency responses of the receivers act to limit the null depth and therefore the degree of interference rejection attainable for finite-bandwith interference. An experimental four-element HF antenna array is used as an illustration; the measured differential frequency-dependent phase and amplitude responses of the receivers are presented and the corresponding limits to null-depth derived, for a 3 KHz bandwidth. Correction techniques, including an exact software procedure and a hardware-implementable approach to linear phase correction are presented, and their requirements and anticipated performance considered.
Report Number
TN-711 —
Date of publication
15 Apr 1982
Number of Pages
16
DSTKIM No
83-00512
CANDIS No
38580
Format(s):
Hardcopy;Originator's fiche received by DSIS

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