TY - GEN
T1 - Using pulse width and waveform modulation to enhance power conversion efficiency under constraint of low input power
AU - Yang, Yu Lin
AU - Tsai, Chi Lin
AU - Yang, Ching Wen
AU - Yang, Chin Lung
PY - 2012
Y1 - 2012
N2 - This paper presents a novel wireless power transmission (WPT) technique by using pulse width modulation (PWM) and pulse waveform modulation (PWFM). Instead of using continuous wave for WPT, we could enhance the output voltage (V out) and power conversion efficiency (PCE) of RF-DC rectifier by adjusting duty cycles and waveforms. We could determine the optimal duty cycle and waveforms to achieve the best performance according to the current through the load. Therefore, the PCE can be improved under constraint of low input power for biomedical applications. The WPT system and biomedical WPT system were established to perform wireless biomedical experimental verification. From the measurement, the PCE applying to a LED load can be improved by more than 30 % at input power of -6 dBm with PWM WPT, and the PCE can be improved by 2.5 times by using PWFM WPT for biomedical applications.
AB - This paper presents a novel wireless power transmission (WPT) technique by using pulse width modulation (PWM) and pulse waveform modulation (PWFM). Instead of using continuous wave for WPT, we could enhance the output voltage (V out) and power conversion efficiency (PCE) of RF-DC rectifier by adjusting duty cycles and waveforms. We could determine the optimal duty cycle and waveforms to achieve the best performance according to the current through the load. Therefore, the PCE can be improved under constraint of low input power for biomedical applications. The WPT system and biomedical WPT system were established to perform wireless biomedical experimental verification. From the measurement, the PCE applying to a LED load can be improved by more than 30 % at input power of -6 dBm with PWM WPT, and the PCE can be improved by 2.5 times by using PWFM WPT for biomedical applications.
UR - http://www.scopus.com/inward/record.url?scp=84874402699&partnerID=8YFLogxK
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U2 - 10.1109/APMC.2012.6421611
DO - 10.1109/APMC.2012.6421611
M3 - Conference contribution
AN - SCOPUS:84874402699
SN - 9781457713309
T3 - Asia-Pacific Microwave Conference Proceedings, APMC
SP - 400
EP - 402
BT - 2012 Asia-Pacific Microwave Conference, APMC 2012 - Proceedings
T2 - 2012 Asia-Pacific Microwave Conference, APMC 2012
Y2 - 4 December 2012 through 7 December 2012
ER -