Interrogator of moving body identification device

Details Interrogator of moving body identification device Interrogator of moving body identification device

2007-10-02

2007-10-02

Orgad, Edan (Department: 2618)

Telecommunications

Transmitter

Amplitude modulation

C455S556100, C455S344000, C455S572000, C340S010100, C340S010200, C340S010300, C340S010500, C340S572400, C342S044000, C342S193000, C375S300000, C375S268000

Reexamination Certificate

active

10519564

ABSTRACT:
To reduce the size, weight and cost of an interrogator which is included in an RFID system and required to have a high output power, the interrogator for transmitting a signal shares a radio wave source or a power supply with a portable wireless terminal such as a mobile phone or a portable communication device. For this purpose, a radio frequency transmitter signal is subjected to amplitude modulation by information to be transmitted to a transponder. Furthermore, part of the radio frequency transmitter signal extracted using a coupler is used to perform synchronous detection on a radio frequency receiver signal returned from the transponder, and data coming from the transponder are extracted.

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patent: WO 2004/013652 (2004-02-01), None

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