Low noise signal generator for use with an RFID system

Details Low noise signal generator for use with an RFID system Low noise signal generator for use with an RFID system

1998-07-24

1999-09-21

Mullen, Jr., Thomas J

Communications: electrical

Condition responsive indicating system

Specific condition

3405724, G08B 1314

Patent

active

059559500

ABSTRACT:
Noise reduction schemes are provided in a radio frequency identification (RFID) system for use with RFID intelligent tags. Amplitude and phase noise is minimized by starting with a low noise crystal oscillator having an output frequency which is an integer multiple n of the desired RF field frequency, and then dividing this frequency by the integer multiple n. One or more cascaded flip-flops are used for the frequency dividing. Both outputs of the final stage flip-flop are used to drive the transmitter antenna to produce a continuous wave signal.

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