Multi-mode feed system for a monopulse antenna

Details Multi-mode feed system for a monopulse antenna Multi-mode feed system for a monopulse antenna

1989-07-31

1991-07-30

Issing, Gregory C.

Communications: directive radio wave systems and devices (e.g.,

Directive

Including polarized signal communication transmitter or...

342153, 343756, 333 21A, H01Q 2106, H01Q 1900, G01S 1300, H01P 116

Patent

active

050363328

ABSTRACT:
A monopulse antenna feed system utilizing multiple modes within the feed. A TEM mode and two TE.degree..sub.11 modes that are orthogonal and in phase quadrature are utilized in the antenna feed system to provide tracking information and data communication from a far-field source of circularly polarized radiation. The output from a port that is responsive to the TEM mode is compared with the output from a port that is responsive to the TE.degree..sub.11 modes to obtain tracking information and the output from the latter port also provides a channel for communication of data. The phase of the TEM mode relative to the phase of the TE.degree..sub.11 modes is indicative of the angular rotational position of a far-field source relative to the axis of the feed system and the relative amplitude of the TEM mode is indicative of the angular displacement of the far-field source away from the axis of the feed system.

REFERENCES:
patent: 4849761 (1989-07-01), Thomas

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