A 915 MHz 175 mu W Receiver Using Transmitted-Reference and Shifted Limiters for 50 dB In-Band Interference Tolerance

作者：Ye Dawei^*; van der Zee Ronan; Nauta Bram

来源：IEEE Journal of Solid-State Circuits, 2016, 51(12): 3114-3124.

DOI：10.1109/JSSC.2016.2602943

• CMOS
• envelope detector (ED)
• fast synchronization
• gain compression
• interference robustness
• Internet of Things (IoT)
• linear range
• low noise amplifiers (LNA)
• probability density pdf)
• RF
• shifted limiter (SL)
• signal-to-interference ratio (SIR)
• spread-spectrum (SS)
• transmitted-reference (TR)
• ultralow power (ULP) receiver (RX)
• wireless sensor network (WSN)

Improving interference robustness in ultralow power (ULP) receivers (RXs) is a big challenge due to their low power budget. This paper presents an envelope detector based 915 MHz 10 kb/s ULP RX, which is fabricated in 65 nm CMOS process for wireless sensor networks and Internet of Things. Two power-efficient techniques, transmitted-reference and shifted limiter, are proposed to improve the interference robustness. The RX sensitivity is between -61 and -76 dBm. The maximum in-band signal-to-interference ratio at +/- 1 MHz offset is up to -50 dB while just consuming 175 mu W power from a 1 V supply.

• 出版日期2016-12