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In this paper, a compact G-shape, ultra wide band microstrip fed antenna with band notch characteristics of satellite communication is proposed. The proposed antenna of a circular slot cuts in the patch to achieve a band notched characteristics in the satellite communication band (7.25–7.825 GHz). The antenna, which occupies a size of 45 × 36 × 1. 6 mm3. Surface current distribution to analyze the...
A Planer CPW fed UWB monopole antenna with triple band notch characteristics is presented in this paper. Modal analysis of band-notched UWB antennas illustrates the existence of resonant modes linked to the embedded narrowband slot structure (slot modes), whose location within the planar geometry of the monopole determines the effect over the rest of the radiating modes of the wideband structure,...
In this paper we have proposed some new photonic crystal fiber structures whose geometries are derived from the polynomials of Pascal's Triangle (PT). The simulation of the proposed structures are carried out using OptiFDTD simulator with full vector mode solver using finite difference time domain (FDTD). The dispersion observed for the proposed structure was almost zero upto a wavelength of 8□m....
In this paper we show a comparison of two hexagonal geometries of Photonic Crystal Fiber (PCF). These geometries are different with respect to the area of circular air holes. The area of circular air holes is kept fixed for a structure and is kept increasing and decreasing alternatively with increase in number of rings for another structure. Both structure considered consists of seven rings. The structure...
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