Communications: directive radio wave systems and devices (e.g. – Directive – Beacon or receiver
Patent
1989-06-08
1990-02-27
Blum, Theodore M.
Communications: directive radio wave systems and devices (e.g.,
Directive
Beacon or receiver
342373, G01S 144
Patent
active
049050125
ABSTRACT:
An antenna feed for a TACAN circular array. A power divider divides a source of radio frequency signals into zero, first and ninth order mode signals. A second power divider divides the zero mode input signal into a plurality of output signals each driving a pair of elements of the TACAN array. A second conventional matrix of radio frequency components receives the first and ninth mode excitation signals. A phase combining network combines the first and ninth mode signals so as to produce a plurality of signals each driving a pair of antenna elements. An output hybrid coupler combines the zero phase mode with the phase combined signals to produce the required TACAN azimuth antenna pattern.
REFERENCES:
patent: 4197542 (1980-04-01), Hofgen
patent: 4641142 (1987-02-01), Greving et al.
Blum Theodore M.
ISC Cardion Electronics, Inc.
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