BLE Receiver with Fast DC Offset Cancellation and Carrier Frequency Offset Compensation

A BLE receiver with fast DC offset cancellation and carrier frequency offset (CFO) compensation is presented. The receiver employs a fully integrated RF front-end and a digital modem. The BLE SoC with embedded flash is fabricated in 55 nm RF CMOS technology, the receiver achieves sensitivity of −95 dBm and the CFO compensation in digital modem helps to extend the CFO tolerance from ± 100 kHz (BLE spec.) to ± 250 kHz with only 2 dB sensitivity degradation.