A 0.85mm2 BLE Transceiver with Embedded T/R Switch, 2.6mW Fully-Passive Harmonic Suppressed Transmitter and 2.3mW Hybrid-Loop Receiver

This paper presents a miniaturized Bluetooth Low-Energy transceiver for short-range IoT applications in 65-nm CMOS. A T/R switch embedded with transmitter harmonic-suppression and on-chip impedance matching is proposed. The BLE transceiver delivers -6dBm output while consuming 2.6mW. 18.5% TX efficiency is achieved at OdBm output power. A -94dBm receiver sensitivity is achieved with 2.3mW receiver power consumption. Thanks to the T/R switch embedded with harmonic suppression, -56dBc of 2
^nd
-order harmonic distortion (HD2) and -48dBc of 3
^rd
-order harmonic distortion (HD3) suppressions are achieved. The fabricated BLE transceiver occupies 0.85mm
²
active area. This transceiver satisfies the BLE radio specification without the need for external filters, that enables minimum size modules and short time to market.