2.45-GHz Wireless Power Transmitter with Dual-Polarization-Switching Cantenna for LED Accessories

Yoshida, Kakunoshin; Kashiyama, Norifumi; Kanemoto, Miho; Umemoto, Shogo; Nishikawa, Hisashi; Tanaka, Ami; Douseki, Takakuni

doi:10.1109/wptc45513.2019.9055595

Cited by 6 publications

(2 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A horn antenna excited by substrate-integrated gap waveguide for the use in Ku-band radar was combined with a mushroom EBG operating in the frequency range from 28.5-35 GHz and had an average gain 11.5 dBi [12]. A dual-polarization-switching cantenna used for wireless power transmitter for LED accessories operating in a 2.45 GHz frequency range had an average gain of 12.2 dBi [13]. A conventional circular horn antenna used for X-band radar and I-band beyond the IEEE and ITU in combination with a woodpile EBG structure operating in a frequency range of 10 GHz had an average gain of 25.34 dB [14].…”

Section: Introductionmentioning

confidence: 99%

Cantenna Adjustment with 1x6 Woodpile Shaped EBG for Application in Goat Manure Moisture Content and Bulk Density Monitoring

Naktong¹,

Prapakarn²,

Prapakarn³

et al. 2022

PIER C

View full text Add to dashboard Cite

This study aimed to investigate the structural design of a cantenna with Woodpile shaped electromagnetic band gap (EBG) for gain enhancement and to increase the efficiency of signal transmission for measuring the moisture content and the bulk density of goat manure, which can help farmers reduce the cost of buying chemical fertilizers. From the test of operating frequency ranges from 2 to 3 GHz, it was found that the frequency band that responds to humidity the best is 2.60 GHz, increasing the efficiency of the gain with the 6 × 6 cm 2 Woodpile shaped EBG. It was arranged in transverse electric (TE) and placed parallel to the end of the cantenna. This allows the gain to be increased to 9.31 dBi, in which the cantenna structure without EBG has the gain of 7.32 dBi. When the cantenna is used to determine the moisture content (MC) and bulk density, the transmission distance between the cantenna Tx/Rx is 3 cm with an average power rating of 0.0001-0.5 mW. This cantenna can measure humidity in the unit of wet basis (wb.) as low as 0.14%wb., at an average power of 0.5 mW.

show abstract

Section: Introductionmentioning

confidence: 99%

Cantenna Adjustment with 1x6 Woodpile Shaped EBG for Application in Goat Manure Moisture Content and Bulk Density Monitoring

Naktong¹,

Prapakarn²,

Prapakarn³

et al. 2022

PIER C

View full text Add to dashboard Cite

show abstract

“…[1] Using the measured distance, the transmitter emits controlled electromagnetic waves with an electric field strength below that of Japan's national guidelines [2] while maintaining a constant power supply to the target device even if the distance between the human body and the transmitter changes. We also developed an intermittent power transfer system [3][4][5] that increases the distance from the transmitter to the wearable device while maintaining the average transmitted power. The distance is increased by intermittent operation with a peak power that rises in proportion to the reciprocal of the duty cycle.…”

Section: Introductionmentioning

confidence: 99%

Slidable Button-shaped Rectifier Module with LED on Conductive Yarn for Antenna Matching Powered by Microwaves

Nishimura

Tanaka

Otsuka

et al. 2022

Transactions of The Japan Institute of Electronics Packaging

Self Cite

View full text Add to dashboard Cite

This paper describes a gamma-matched textile rectenna structure that is suitable for batteryless wearable accessories powered by microwaves using a conductive-yarn antenna. The proposed structure consists of a slidable button-shaped rectifier module with LED that allows the antenna to pass through its metal holes, thus making it possible to connect a soft textile antenna with a hard rectifier module to easily perform impedance matching by sliding the module on the antenna, while watching luminance of the LED light. To verify the effectiveness of our textile rectenna structure, we fabricated a button-shaped rectifier module 7.5 mm in diameter including an LED and a 6-cm-long bundled conductiveyarn antenna consisting of 0.5-mm-thick single yarns. The experimental results showed that, for 2.45-GHz wireless power transmission with an average transmitted power of 1 W, the LED on the rectifier module blinked while dissipating power of 0.355 mW at a distance of 70 cm from the wireless transmitter. We also fabricated a friendship bracelet and a pair of embroidered socks equipped with our rectenna as LED textile accessories.

show abstract

Feasibility study of using electronics wireless electricity detector with python software

Fadhil,

Junita,

Hasoon

et al. 2024

AIP Conference Proceedings

View full text Add to dashboard Cite

2.45-GHz Wireless Power Transmitter with Dual-Polarization-Switching Cantenna for LED Accessories

Cited by 6 publications

References 2 publications

Cantenna Adjustment with 1x6 Woodpile Shaped EBG for Application in Goat Manure Moisture Content and Bulk Density Monitoring

Cantenna Adjustment with 1x6 Woodpile Shaped EBG for Application in Goat Manure Moisture Content and Bulk Density Monitoring

Slidable Button-shaped Rectifier Module with LED on Conductive Yarn for Antenna Matching Powered by Microwaves

Feasibility study of using electronics wireless electricity detector with python software

Contact Info

Product

Resources

About