Electronic transponder tuning circuitry

Details Electronic transponder tuning circuitry Electronic transponder tuning circuitry

1994-12-22

1996-02-13

Sotomayor, John B.

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

Radar transponder system

Radar transponder only

342 42, G01S 1380

Patent

active

054914841

ABSTRACT:
A method is disclosed herein for tuning a responder unit (12). The method comprises the stops of storing energy in a responder unit energy accumulator (136) in a contactless fashion by RF energy transmitted from the interrogator unit (10) to the responder unit (12), and exciting within the responder unit (12) an RF carrier wave. The method further comprises the stops of transmitting the RF carrier wave in a first response from the responder unit (12) to the interrogator unit (10) and measuring within the interrogator unit (10) the received signal strength of the RF carrier wave of the first response. In further accordance with the invention tuning data may be transmitted to the responder unit (12) by sending at least one RF programming sequence from the interrogator unit (10) to the responder unit (12). The responder unit (12) upon receiving the RF programming sequence from the interrogator unit (10) would preferably modify an internally stored frequency setting within a memory (244) of the responder unit (12) in response to the first set of data. Other devices, systems and methods are also disclosed.

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patent: 5430447 (1995-07-01), Meier
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