A 22.3-nW, 4.55 cm2 Temperature-Robust Wake-Up Receiver Achieving a Sensitivity of −69.5 dBm at 9 GHz
| Autor: | Li Gao, Haowei Jiang, Corentin Pochet, Patrick P. Mercier, Po-Han Peter Wang, Drew A. Hall, Gabriel M. Rebeiz |
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| Rok vydání: | 2020 |
| Předmět: |
Physics
business.industry Amplifier 020208 electrical & electronic engineering Clock rate 02 engineering and technology CMOS 0202 electrical engineering electronic engineering information engineering Baseband Optoelectronics Radio frequency Electrical and Electronic Engineering business Electrical impedance Envelope detector Voltage |
| Zdroj: | IEEE Journal of Solid-State Circuits. 55:1530-1541 |
| ISSN: | 1558-173X 0018-9200 |
| Popis: | This article presents a miniaturized wake-up receiver (WuRX) that is temperature-compensated yet still consumes only 22.3 nW (7.3 nW excluding the temperature-compensation blocks) while operating at 9 GHz ( ${X}$ -band). By moving the carrier frequency to 9 GHz and designing a high impedance, passive envelope detector (ED), the transformer size is reduced to 0.02 cm2 while still achieving 13.5 dB of passive RF voltage gain. To further reduce the area, a global common-mode feedback (CMFB) technique is utilized across the ED and baseband (BB) amplifier that eliminates the need for off-chip ac-coupling components. Multiple temperature-compensation techniques are proposed to maintain constant bandwidth of the signal path and constant clock frequency. The WuRX was implemented in 65- (RF) and 180-nm (BB) CMOS and achieves −69.5- and −64-dBm sensitivity with and without an antenna, respectively. Importantly, the sensitivity is demonstrated to vary by only 3 dB from −10 to 40 °C. This article demonstrates state-of-the-art performance for WuRXs operating at >1 GHz while achieving the smallest area and best temperature insensitivity. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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