Method and apparatus for reducing residual rf power in a...

Details Method and apparatus for reducing residual rf power in a... Method and apparatus for reducing residual rf power in a...

H - Electricity

04

B

H04B 1/18 (2006.01) G01S 13/75 (2006.01) H04B 1/44 (2006.01)

Patent

CA 2131273

- 10 - 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.

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