Integrated circuit for a transponder

Details Integrated circuit for a transponder Integrated circuit for a transponder

2006-05-23

2006-05-23

Nguyen, Hung (Department: 2636)

Communications: electrical

Condition responsive indicating system

With particular coupling link

C340S539100, C340S505000, C340S572100, C340S572400, C340S010100, C340S010300, C235S491000

Reexamination Certificate

active

07049958

ABSTRACT:
An integrated circuit is combined with a transponder to function either as a voltage or power supply for the transponder by extracting energy out of an electromagnetic field transmitted by a base station or as a detector in the transponder to act as a remote sensor. For this purpose the integrated circuit comprises diode rectifiers. Each of the diode rectifiers has a first and a second service terminal and a reference terminal. In order to reduce a parasitic impedance between the first service terminal and the reference terminal, the first service terminal of at least one rectifier diode is electrically connected to a reference potential such as ground. Parasitic diode characteristics are further reduced by surrounding the respective diode or diodes by an electrical conductor path also connected to the reference potential.

REFERENCES:
patent: 5153583 (1992-10-01), Murdoch
patent: 6809952 (2004-10-01), Masui

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