Farfield simulator for testing autotrack antennas

Details Farfield simulator for testing autotrack antennas Farfield simulator for testing autotrack antennas

1994-03-14

1995-05-30

Hajec, Donald

Communications: radio wave antennas

Antennas

Measuring signal energy

343786, 333 21R, 342365, G01R 2910

Patent

active

054205972

ABSTRACT:
A simulation device is provided for testing autotrack antennas. The device includes a mode coupler and transmit horn which are identical to the mode coupler and transmit horn of the antenna to be tested. The mode coupler has a plurality of waveguide input ports for transmitting voltage signals which are complex conjugates of signals occurring under receiving conditions. The device then generates a signal that simulates the far-field, plane-wave testing environment and applies this signal to an antenna to be tested.

REFERENCES:
patent: 4797681 (1989-01-01), Kaplan et al.
patent: 5066959 (1991-11-01), Huder
patent: 5237334 (1993-08-01), Waters
Test Procedure for Antennas, IEEE No. 149, Jan. 1965.
Inexpensive Multi-Mode Satellite Tracking Feed Antenna, P. D. Patel, IEEE Proceedings, vol. 135, Pt. H., No. 6, Dec. 1988.
A 60 GHZ Beam Waveguide Antenna System For Satellite Crosslinks, R. J. Meier and Y. P. Loh, General Electric Company, Astro-Space Division, VFSC, IEEE 1987.
A Mode Extraction Network for RF Sensing in Satellite Reflector Antenna B. K. Watson, N. D. Dang, S. Ghosh, ERA Technology Ltd., UK, Apr. 1981.

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