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RF to DC CMOS rectifier with high efficiency over a wide input power range for RFID applications
- Source :
- 2012 IEEE/MTT-S International Microwave Symposium Digest.
- Publication Year :
- 2012
- Publisher :
- IEEE, 2012.
-
Abstract
- In this paper we present a RF-DC rectifier which operates over a wide range of input power by providing a regulated output DC voltage. The circuit solution we propose is based on a novel active load circuit which adjusts the output current as a function of the incoming RF power. This allows maximizing both the efficiency and sensitivity of the circuit. Circuit prototypes fabricated in 130nm CMOS technology start to operate at −14dBm, providing a regulated output voltage of 1.6÷1.8V in the −14÷1dBm RF input power at 868MHz. Noticeably, the circuit efficiency of the rectifier peaks at 45%, remaining above 30% in the −12÷+1dBm input power range.
- Subjects :
- RFID
Engineering
ultra-low power circuit
RF-DC conversion rectifiers
circuit efficiency
business.industry
RF power amplifier
Electrical engineering
Diode-or circuit
Hardware_PERFORMANCEANDRELIABILITY
Power factor
RF probe
Active load
Constant power circuit
Rectifier
Hardware_INTEGRATEDCIRCUITS
Electronic engineering
business
Hardware_LOGICDESIGN
Linear circuit
Subjects
Details
- Database :
- OpenAIRE
- Journal :
- 2012 IEEE/MTT-S International Microwave Symposium Digest
- Accession number :
- edsair.doi.dedup.....79516fea3873a45a2cecd3c824d6dd88