Apple has announced CarKey, a way to wirelessly unlock your car with your iPhone, it could herald the start of an era that sees 13.560 MHz NFC transmitters installed in cars
NFC has a typical bandwidth of 14 kHz but signal sidebands may extend up to 1.8 MHz either side of 13.560 MHz. The data rates range from 106,000 to 424,000 bps
https://www.rfwireless-world.com/Articles/NFC-basics.html
Read the Verge article on Apple CarKey
https://www.theverge.com/2020/6/22/21299182/apple-carkey-ios-14-13-digital-key-unlock-car-iphone-wwdc-2020
Paper: High Speed RFID/NFC at the Frequency of 13.560 MHz, page 3 shows NFC spectral mask
https://www.eurasip.org/Proceedings/Ext/RFID2007/pdf/s1p4.pdf
Source:http://www.southgatearc.org/
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