Alselwi, Mohammed Abdul Raheem Esmail (2024) Design and development of high-efficiency CMOS on-chip rectifiers for radio-frequency energy harvesting applications. Masters thesis, Universiti Teknikal Malaysia Melaka.
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Design And Development Of High-Efficiency CMOS On-Chip Rectifiers For Radio-Frequency Energy Harvesting Applications.pdf - Submitted Version Download (369kB) |
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Design And Development Of High-Efficiency CMOS On-Chip Rectifiers For Radio-Frequency Energy Harvesting Applications.pdf - Submitted Version Restricted to Registered users only Download (7MB) |
Abstract
The on-chip rectifier is major part of the integrated radio frequency energy harvesting system because it converts electromagnetic waves coming to the antenna into usable DC voltage. The diode-connected transistor is the fundamental unit of the on-chip rectifier. Previous studies showed CMOS cross connected rectifier over a wide input range is the most efficient to date and was stated that to design a (<10W rectifier) that can be implemented in medical devices, we use a diode connected transistor on-chip to create the efficient full wave rectifier. CMOS is the preferred technology for building an on-chip rectifier because its circuit is compact, insensitive to noise and consumes less power. The differential cross-connected rectifier architecture is the most efficient rectifier to date and is widely used for passive radio frequency identification tags. The design of the rectifier starts with the specifications of circuit parameters with the use of the Silterra Process Design Kit and the Cadence Virtuoso Platform, schematic capture, layout design as well as simulation and verification. The most important parameters of the CMOS rectifier are sensitivity that measures the minimum power of radio wave required to produce an output of 1 V DC voltage, and the power conversion efficiency that measures the percentage ratio of DC output power to input radio frequency power. The cascade of the rectifier block in series increases the output voltage. The designed differential drive cross connected rectifier schematic circuits with impedance matching network circuits’ simulations resulted a power conversion efficiency of 83% and sensitivity of 18 dBm at input power -25 dBm and bandwidth 500 MHz. When the number of the stages of rectifier circuit block were cascaded in the schematic drawing from a single stage to five stages, the output voltage was incremented proportionally. The powercast energy harvesting development kit for wireless sensors was demonstrated at various distances using patch and dipole antennas and was calculated for transmitted 1 W power from powercast transmitter at distance one meter between the transmitter and receiving antennas. The received power conversion efficiency was 55% for both antennas but the received power for patch antenna was 8.1 mW and 3.7 mW for dipole antenna. Applications of the radio frequency energy harvesting system include a wireless sensor network node, radio frequency identification tag, body area network, implantable medical devices and portable sensors.
| Item Type: | Thesis (Masters) |
|---|---|
| Uncontrolled Keywords: | Electric current rectifiers, Metal oxide semiconductors, Radio frequency integrated circuits |
| Subjects: | T Technology > T Technology (General) T Technology > TK Electrical engineering. Electronics Nuclear engineering |
| Divisions: | Library > Tesis > FTKEK |
| Depositing User: | Muhamad Hafeez Zainudin |
| Date Deposited: | 27 Feb 2026 08:15 |
| Last Modified: | 27 Feb 2026 08:15 |
| URI: | http://eprints.utem.edu.my/id/eprint/29400 |
| Statistic Details: | View Download Statistic |
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