|
For Full-Text PDF, please login, if you are a member of IEICE,
or go to Pay Per View on menu list, if you are a nonmember of IEICE.
|
An ASK Modulator and Antenna Driver for 13.56 MHz RFID Readers and NFC Devices
Junghyun CHO Kyung-Won MIN Shiho KIM
Publication
IEICE TRANSACTIONS on Communications
Vol.E89-B
No.2
pp.598-600 Publication Date: 2006/02/01 Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e89-b.2.598 Print ISSN: 0916-8516 Type of Manuscript: LETTER Category: Devices/Circuits for Communications Keyword: RFID reader, 13.56 MHz transmitter, NFC,
Full Text: PDF(510.2KB)>>
Summary:
We propose an ASK modulator and Antenna driver for multi-standard 13.56 MHz RFID readers and NFC devices. The proposed transmitters of RFID readers and NFC devices consist of ASK modulator, inverting output driving buffer and off-chip antenna with a matching circuit. The ASK modulation depth can easily be controlled by adjusting duty ratio by the delay line circuit. The test chip was fabricated by using a 0.35 µm double poly CMOS process. The measured results demonstrated that the proposed circuit has met the standard specifications.
|
|
|