Single loop transponder system and method

Details Single loop transponder system and method Single loop transponder system and method

1994-01-05

1996-02-13

Eldred, J. Woodrow

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

Radar transponder system

342 44, 342 50, 342 51, 340568, 340572, G01S 1300

Patent

active

054914833

ABSTRACT:
An apparatus including an object 10 associated with a contactless, electronic identifier is disclosed herein. In one example, the object 10 is a trash bin. This object 10 is formed from a non-conductive material. A single-loop antenna 14 is disposed adjacent the object 10. An impedance transformer 18 which is matched to the single-loop antenna 14 is used to generate a desired inductance. A transponder 12 is also disposed near to and associated with the object 10. The transponder 12 is coupled to the antenna 14 through the impedance transformer 18.

REFERENCES:
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patent: 4074227 (1978-02-01), Kalmus
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patent: 4663625 (1987-05-01), Yewen
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patent: 4911217 (1990-03-01), Dunn et al.
patent: 5053774 (1991-10-01), Schuermann et al.
patent: 5230393 (1993-07-01), Mezey
patent: 5347263 (1994-09-01), Carroll et al.

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