A back telemetry-capable active high efficiency rectifier in standard CMOS process

In this paper, we present an active rectifier with high power conversion efficiency (PCE) implemented in a 0.5-μm 5 V standard CMOS process with two modes of built-in back telemetry; short- and open-circuit. As a rectifier, it ensures a PCE ≫ 80%, taking advantage of active synchronous rectification technique in the frequency range of 0.125 – 1 MHz. The built-in complementary back telemetry feature in this rectifier can be utilized in implantable microelectronic devices, radio frequency identification (RFID), and wireless sensor applications to reduce the silicon area, improve the reading range, and increase the data rate with load shift keying (LSK).