Title:
FREQUENCY-DIVISION-COORDINATED AUTOMATIC POWER CONTROL FOR NEAR-FIELD COMMUNICATION
Document Type and Number:
WIPO Patent Application WO/2022/116538
Kind Code:
A1
Abstract:
Techniques are described for frequency-division-coordination of automatic power control (APC) in a transceiver of a near-field reader. Such frequency-division-coordinated APC (FDC-APC) can enable continuous APC updates concurrent with communication frames to achieve field strength specifications without conventional degradations in communication reliability. For example, a transceiver implements a FDC-APC loop that received a detuning signal from signals received and/or transmitted over a near-field communication link, generates an error signal by comparing the detuning signal with a reference detuning level, and updates a power control signal according to an update frequency (e.g., corresponding to a APC loop bandwidth) that is a function of at least a filter frequency profile and is out-of-band with respect to a modulation frequency band. Modulated signals can be transmitted over the near-field communication link according to variable power settings controlled to the power control signal.
Inventors:
SINOUSSI NABIL (EG)
NAGIB MICHAEL SHERIF SOBHY (EG)
METAWEA AHMED SAYED ABBAS (EG)
NAGIB MICHAEL SHERIF SOBHY (EG)
METAWEA AHMED SAYED ABBAS (EG)
Application Number:
PCT/CN2021/104990
Publication Date:
June 09, 2022
Filing Date:
July 07, 2021
Export Citation:
Assignee:
SHENZHEN GOODIX TECH CO LTD (CN)
International Classes:
H04B5/00
Foreign References:
| US10390200B2 | 2019-08-20 | |||
| CN109428631A | 2019-03-05 | |||
| US20150341073A1 | 2015-11-26 | |||
| US20190097687A1 | 2019-03-28 | |||
| US20140184150A1 | 2014-07-03 | |||
| US20180038903A1 | 2018-02-08 |
Attorney, Agent or Firm:
LONGSUN LEAD IP LTD. (CN)
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