Automatic antenna tuner system for rfid

G - Physics – 01 – V

Patent

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Details

G01V 3/12 (2006.01) H03J 3/20 (2006.01) G06Q 10/08 (2012.01) H01Q 1/50 (2006.01)

Patent

CA 2696413

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.

L'invention concerne un système automatique d'accord d'antenne pour système d'identification par radiofréquence comprenant un modulateur de largeur d'impulsion, un microprocesseur pour commander la production d'un signal source à partir du modulateur, des condensateurs pour recevoir le signal source provenant d'amplificateurs et le transmettre à un inducteur, une grille communiquant avec les condensateurs pour transmettre un signal résonnant provenant de l'inducteur et des condensateurs sous la forme d'un signal porteur et des moyens pour appliquer le signal porteur avec le signal source pour produire un signal comparé afin de produire une suite d'impulsions et des moyens pour faire varier la capacité afin d'augmenter ou de diminuer le compte de la suite d'impulsions.

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