- Title
- A CMOS Rectifier with a Wide Dynamic Range Using Switchable Self-Bias Polarity for a Radio Frequency Harvester
- Creator
- Teo, Boon Chiat Terence; Lim, Wu Cong; Venkadasamy, Navaneethan; Lim, Xian Yang; Kok, Chiang Liang; Siek, Liter
- Relation
- Electronics Vol. 13, Issue 10, no. 1953
- Publisher Link
- http://dx.doi.org/10.3390/electronics13101953
- Publisher
- MDPI AG
- Resource Type
- journal article
- Date
- 2024
- Description
- This paper presents a switchable self-bias polarity on the CMOS complementary cross-coupled rectifier to improve the rectifier’s power conversion efficiency (PCE) profile across a wide input power (PIN) dynamic range. This technique achieves this by adaptively switching the polarity of the bias on the n-MOS to overdrive it during low PIN to improve the sensitivity and underdrive it during high PIN to suppress the shoot-through loss and the unnecessary discharge of the coupling capacitor. The popular self-biased p-MOS is also implemented further to reduce the reverse conduction loss during high PIN. The proposed rectifier is fabricated in a 40 nm CMOS process and operates at 900 MHz with a load of 50 kΩ. The proposed rectifier achieved a peak PCE of 72.1% and maintained a 0.8xPCEPEAK across a PIN dynamic range of 11.5 dB.
- Subject
- cross-coupled; energy harvesting; power conversion efficiency; RF-DC converter; wireless power transfer
- Identifier
- http://hdl.handle.net/1959.13/1505536
- Identifier
- uon:55678
- Identifier
- ISSN:2079-9292
- Rights
- x
- Language
- eng
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