Zheng Sun, Hanli Liu, Dexian Tang, Hongye Huang, T. Kaneko, Rui Wu, W. Deng, K. Okada
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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 2nd-order harmonic distortion (HD2) and −48dBc of 3rd-order harmonic distortion (HD3) suppressions are achieved. The fabricated BLE transceiver occupies 0.85mm2 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.
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