This paper presents an simulation study using CST microwave studio. In this work very simple design are used based on metamaterial to construct perfect absorber. It is a semi-square copper loop placed top of dielectric layer separate from ground plate. structure provides two absorption region with peaks in average 99.98%. due dipole resonance the main and secondary diameter ring. addition, dime...

In this paper, a novel dual-band bandpass filter (BPF) based on a single short-ended dual-mode resonator (SEDMR) is presented. According to the voltage distribution of the resonator, two pairs of loaded open stubs, inside and outside of the resonator, are utilized to tune the center frequency and the external quality factor of the first passband respectively, while there is no influence on the ...

A compact ultra wideband (UWB) monopole antenna with dual band-notched characteristics is presented. The antenna consists a square radiating patch with L shaped slots on the radiation patchand a U shaped slot as the feedline. By cutting two C-shaped slots in the ground plane, additional resonance is excited and hence much wider impedance bandwidth can produced, especially at the higher band, wh...