HF-Vorrichtung und Verfahren mit verbesserter aktiver Belastungsmodulationskapazität

Details

Veröffentlichungs-Nr.

EP2830228

Aktenzeichen

EP13177543

Anmeldetag

23. Juli 2013

Veröffentlichung

10. Januar 2018

Erteilung

10. Januar 2018

Rechtsraum

EP

IPC

H04B5/00H04B5/02

Abstract

There is described an RF bidirectional communication device utilizing active load modulation, the device comprising (a) a resonance circuit including an antenna (326), and (b) a control unit (322) for controlling communication of the device, including switching between a transmission mode and a receiving mode, wherein the control unit is adapted to (c) modify a configuration of the resonance circuit such that the resonance circuit has a first resonance frequency (f 0 ) when the device is in the transmission mode and a second resonance frequency (f 0 +f) when the device is in the receiving mode, and (d) modify the configuration of the resonance circuit such that a Q-factor of the resonance circuit is periodically decreased while the device is in the transmission mode. There is also described a corresponding method and a system comprising a RF device and a reader/writer device. Furthermore, there is described a computer program and a computer program product.

Anmelder

Firma

NXP B.V.

Land

🇳🇱 Niederlande

Fachgebiete