Radio frequency transponder system

Details Radio frequency transponder system Radio frequency transponder system

G - Physics

01

S

G01S 13/75 (2006.01) G06K 19/063 (2006.01) H01Q 21/24 (2006.01)

Patent

CA 2743955

A radio frequency transponder, including: a substrate; and at least one planar antenna on said substrate, said antenna having a shape determining a corresponding resonant frequency of said antenna; wherein said antenna causes a phase difference between backscattered signals generated in response to excitation of said antenna by orthogonally polarised interrogation signals at said resonant frequency, and said phase difference represents a code of said antenna.

Linvention concerne un transpondeur à radiofréquences comprenant un substrat et au moins une antenne plane sur ledit substrat. Selon linvention, ladite antenne présente une forme qui détermine une fréquence de résonance correspondante de ladite antenne, ladite antenne provoque une différence de phase entre les signaux rétrodiffusés produits en réaction à lexcitation de ladite antenne par des signaux dinterrogation à polarisation orthogonale à ladite fréquence de résonance et ladite différence de phase représente un code de ladite antenne.

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