A 2.4-GHz current-reuse OOK wake-up receiver for MICS applications

Abstract

An ISM-band CMOS OOK receiver is presented as a possible wake-up receiver for implantable cardioverter telemtry system applications. It is based on the heterodyne architecture with uncertain IF. Current reuse technique is employed such that the LC VCO current is reused by the rest part of OOK receiver circuitry. Fabricated in 0.18µm CMOS, the receiver dissipates 1mW from 1.8-V supply. Test results show that the current-reuse OOK receiver is fully functional and meet the performance requirements. The proposed circuit structure can be effective for low-power OOK wake-up receiver design in implantable telemetry devices.