| 发明名称 |
MOBILE WIRELESS COMMUNICATIONS DEVICE INCLUDING NFC ANTENNA MATCHING CONTROL CIRCUIT AND ASSOCIATED METHODS |
| 摘要 |
A mobile wireless communications device includes a near-field communications (NFC) transceiver, NFC antennas and an NFC control circuit. The NFC transceiver generates a received signal strength based on a received signal from an adjacent NFC device. The NFC control circuit includes an antenna switch circuit coupled between the NFC transceiver and the NFC antennas. A capacitance sensing circuit is coupled to the NFC antennas to determine capacitance values thereof. A processor operates the antenna switch circuit based upon the received signal strength and the capacitance values. |
| 申请公布号 |
US2014187153(A1) |
申请公布日期 |
2014.07.03 |
| 申请号 |
US201313733487 |
申请日期 |
2013.01.03 |
| 申请人 |
RESEARCH IN MOTION LIMITED |
发明人 |
ZHU LIZHONG;ZHU Libo;GONDOSCH Robert Michael Philip;MACKENZIE Craig Stuart |
| 分类号 |
H04B5/02 |
主分类号 |
H04B5/02 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A mobile wireless communications device comprising:
a near-field communications (NFC) transceiver configured to generate a received signal strength based on a received signal from an adjacent NFC device; a plurality of NFC antennas; and an NFC control circuit comprising
an antenna switch circuit coupled between said NFC transceiver and said plurality of NFC antennas,a capacitance sensing circuit coupled to said plurality of NFC antennas and configured to determine capacitance values thereof, anda processor configured to operate said antenna switch circuit based upon the received signal strength and the capacitance values. |
| 地址 |
Waterloo CA |
