A physically designed 2.2 GHz OOK receiver for minimum power wireless sensor network applications
INTRODUCTION Low power radio frequency transceiver circuits are critical blocks in wireless sensor network (WSN) applications. The energy consumed by a wireless sensor mote, is largely due to the transceiver. A major design objective for WSN applications is thus to lower the power consumed by the mote transceiver. An appropriate modulation method and a data transmission rate are important factors in reducing the power consumption. Amplitude Shift Keying (ASK) or On-Off Keying (OOK) modulations are less spectrally efficient, but offer better energy efficiency [1][2]. In this paper we present a 1.2V 2mW low power OOK fully integrated receiver implemented using 0.13um CMOS technology. Test shows the chip receives a small radio frequency signal with a sensitivity of -53dBm, and a maximum data rate of 3 Mbps at 2.2 GHz.