Automatic antenna tuner system for RFID

Details Automatic antenna tuner system for RFID Automatic antenna tuner system for RFID

2011-03-29

2011-03-29

Blount, Eric M (Department: 2612)

Communications: electrical

Selective

Interrogation response

C340S572700, C375S238000

Reexamination Certificate

active

07916000

ABSTRACT:
An automatic antenna tuner system for radio frequency identification system includes a pulse width modulator, a microprocessor for controlling the generation of a source signal from the modulator, capacitors for receiving the source signal from amplifiers and transmitting it to an inductor, a gate communicating with the capacitors for transmitting a resonating signal from the inductor and capacitors as a carrier signal and means for gating the carrier signal with the source signal to produce a compared signal to produce a string of pulses and means for varying capacitance to increase or decrease the count of the string of pulses.

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