학술논문
Compact Ultrawideband High-Efficiency Rectifier Using an Exponential Tapered Transmission Line
Document Type
Periodical
Source
IEEE Microwave and Wireless Technology Letters IEEE Microw. Wireless Tech. Lett. Microwave and Wireless Technology Letters, IEEE. 33(5):595-598 May, 2023
Subject
Language
ISSN
2771-957X
2771-9588
2771-9588
Abstract
In this letter, a compact ultrawideband high-efficiency (UWHE) microwave rectifier using an exponential tapered transmission line (ETTL) is proposed. The inductive reactance of the filtering capacitor at the band higher than the self-resonant frequency is used to compensate the capacitive reactance of the diode appropriately. Consequently, the proposed design method can immune to the parasitic impedance of diode as frequency increasing. Meanwhile, an ETTL is adopted for ultrawideband impedance matching at input port. For demonstration, a rectifier prototype is designed, fabricated, and measured. The result shows that the design provides the wide bandwidth of 194% from 0.06 to 3.91 GHz for the power conversion efficiency (PCE) higher than 50% with the input power of 17 dBm. The peak PCE of 68.8% is obtained at 0.915 GHz for the input power of 21 dBm.