This paper presents a design of an impedance transformer (IT) with high frequency selectivity characteristics. The frequency selectivity can be controlled by evenand odd-mode impedance of a shunt coupled transmission line (TL). For experimental validation, a 50to 20Ω IT was implemented at a center frequency (f0) of 2.6 GHz for the long-term evolution signal. The measured results were in good ag...

High Impedance Faults (HIFs) are recurring events in electrical Distribution Systems (DSs) and occur by the contact between energized conductors high impedance surfaces. HIFs may pose hazards to living beings cause bushfires. However, HIF protection has not been completely solved due small fault current varying impedance, inhibiting traditional techniques from functioning correctly. In literatu...

In this decade, compact bandpass filters are essential components in microwave systems for passing desired signals and suppressing unwanted signals. Microstrip bandpass filter is rapidly going up in the design and fabrication in RF front-ends of wireless communication systems. The microstrip structure is well-known because of its light weight and simple design method. As knowing, the bandpass f...

This paper presents the design and demonstration of a novel harmonic transponder sensor (HTS) that can measure position motion target in noisy reflective indoor environments. In conventional HTS implementation, an impedance mismatch at input or output occur because variation antenna caused by location surrounding environment. The (or output) also affects input), thereby degrading conversion gai...