Power harvester design for semi-passive UHF RFID Tag using a tunable impedance transformation

Wilas, Jaturong; Jirasereeamornkul, Kamon; Kumhom, Pinit

doi:10.1109/iscit.2009.5341042

Cited by 16 publications

(12 citation statements)

References 8 publications

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“…Notably, the realized system is characterized by an improved efficiency with respect to the ones reported in [10,11]. Single frequency prototype rectenna.…”

Section: Single Frequency Prototypementioning

confidence: 92%

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Design Considerations for Radio Frequency Energy Harvesting Devices

Pavone¹,

Buonanno²,

D’Urso³

et al. 2012

PIER B

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Abstract-Radio Frequency Energy harvesting is a research topic of increasing interest, related to sustainability, which could become a promising alternative to existing energy resources. The paper will show all the activities addressed to design a wideband system to recover wideband energy from electromagnetic sources present in the environment. The main idea is to develop battery-free wireless sensors able to capture the available energy into the mentioned bandwidth. The final goal is to realize self-powered Wireless Networks based on Ultra Lower Power -ULP sensors minimizing the need of dedicated batteries. This last feature is particularly attractive in different kind of applications, ranging from military to civil cases. A first system prototype is shown and discussed. Conclusion follows.

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“…Notably, the realized system is characterized by an improved efficiency with respect to the ones reported in [10,11]. Single frequency prototype rectenna.…”

Section: Single Frequency Prototypementioning

confidence: 92%

“…An interesting solution is represented by the modified version of the single-stage full-wave Greinacher rectifier [11] showed in Fig. 8.…”

Section: Multiband Energy Harvesting Architecturementioning

confidence: 99%

Design Considerations for Radio Frequency Energy Harvesting Devices

Pavone¹,

Buonanno²,

D’Urso³

et al. 2012

PIER B

View full text Add to dashboard Cite

show abstract

“…The incident RF energy need to be converted into usable dc power require an antenna with high directivity to receive more incident RF energy because the gain of the antenna is directly proportional to its directivity [11], a matching circuit to match the load impedance with the antenna impedance and rectifier circuit to develop the required voltage at the output, for this many approaches have been reported in the literature [4], [5], [6] and [7].…”

Section: Design Methodology Of Energy Harvesting Circuitmentioning

confidence: 99%

An Efficient RF Energy Harvester with Tuned Matching Circuit

Agrawal

Pandey

Singh

et al. 2013

Communications in Computer and Information Science

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Abstract. Microstrip line with π matching circuits are very attractive because of high output power and good impedance matching which makes it an alternative over earlier matching circuit. This paper presents an RF energy harvester with microstrip line in series with tuned π-matching circuit that enables efficient power conversion at different RF input power under different load conditions. Matching circuit parameters were optimized for better efficiency. We have focused for specific input power range -15 to 10dBm for 3-stage, 5-stage and 7-stage of energy harvesting circuit. Optimum efficiency of approximately 80% is achieved at input power 0 to 10dBm for higher stages. Effect of load variation also shows that better efficiency is achieved for input power -10 to 10dBm for 3-stage, 5-stage and 7-stage of the harvesting circuit.

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“…Many approaches have been reported in the literature for matching antenna impedance to the rectifier input impedance [11], [13], [15], [16]. Rectifier input impedance has to be determined and then matched to 50Ω resistance of antenna.…”

Section: Impedance Matchingmentioning

confidence: 99%

An Integrated CMOS RF Energy Harvester with Differential Microstrip Antenna and On-Chip Charger

Arrawatia

Diddi

Kochar

et al. 2012

2012 25th International Conference on VLSI Design

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This paper presents an energy harvesting system which extracts energy from radio frequency radiation for battery charging applications. It comprises of a new differential center tapped Microstrip antenna, off-chip matching circuit, on-chip novel CMOS rectifier and control circuitry in 180nm CMOS technology. For on-chip modules, thick oxide devices have been used so as to meet the charging requirements of the target batteries. The designed battery charging module charges either of 250μAh and 10μAh batteries according to the selected battery and available input power. The 250μAh battery is charged at input power of 2dBm and 10μAh battery is charged at input power of -6.5dBm. The fabricated antenna has a gain of 8.3dB and a VSWR less than 2 in the bandwidth from 844 to 970MHz. An efficient Periodic Steady State(PSS)-based power matching technique is also presented which improves the system efficiency. For 0dBm input power at 950 MHz to the antenna the proposed technique leads to 55.2% efficiency of RF to DC converter system. In addition to the integrated design a discrete rectifier using highfrequency Schottky diodes and differential microstrip antenna at the input are fabricated. The discrete system uses the proposed matching technique and exhibits efficiency of 40% for -11dBm received power by the antenna.

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Power harvester design for semi-passive UHF RFID Tag using a tunable impedance transformation

Cited by 16 publications

References 8 publications

Design Considerations for Radio Frequency Energy Harvesting Devices

Design Considerations for Radio Frequency Energy Harvesting Devices

An Efficient RF Energy Harvester with Tuned Matching Circuit

An Integrated CMOS RF Energy Harvester with Differential Microstrip Antenna and On-Chip Charger

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