Method and apparatus for reducing residual RF power in a transmi

Details Method and apparatus for reducing residual RF power in a transmi Method and apparatus for reducing residual RF power in a transmi

1993-09-07

1994-11-15

Barron, Jr., Gilberto

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

Radar transponder system

Unique identity

34082554, 342175, 455 78, G01S 1376, H04B 144

Patent

active

053652355

ABSTRACT:
A method and apparatus for interrogating a transponder using a single transmitter-receiver antenna transmits an interrogation signal to the transponder. The transmit signal has two segments; a first segment for energizing the transmitter-receiver antenna and a second segment having a second phase for cancelling energy in the transmitter-receiver antenna. The amount of energy is reduced before the transponder transmits a response signal.

REFERENCES:
patent: 3740742 (1973-06-01), Thompson et al.
patent: 3777267 (1973-12-01), Van der Floe et al.
patent: 4058742 (1977-11-01), O'Brien
patent: 5025492 (1991-06-01), Viereck
patent: 5053774 (1991-10-01), Schuermann et al.
patent: 5055835 (1991-10-01), Sutton

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