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A new ultra-wideband planar microstrip antenna obtained by combining rectangular and circular shaped planar monopole patches is proposed. The optimum feed-line position is obtained individually for rectangular and circular patches by studying their surface current distributions. The rectangular and circular geometries are then merged to obtain a modified configuration. A parametric study for varying...
Analysis and design of multi-band dual polarized circular microstrip antenna with an angular cut and pair of rectangular slot in 1000 MHz frequency range is proposed. The angular cut degenerates TMjj and TM21 resonant modes of equivalent circular patch into two orthogonal modes to yield multi-band response. Further pair of rectangular slots optimizes the input impedance at degenerated resonant modes...
Broadband shorted Sectoral microstrip antennas with rectangular slot for Sectoral angle increasing from 50° to 120° are proposed. In shorted patch, rectangular slot reduces the resonance frequency of shorted higher order TM1/4, 1 mode and along with fundamental shorted TM1/4, 0 mode, yields broadband response. A maximum bandwidth of nearly 2000 MHz (>70%) is realized in shorted slot cut 120° Sectoral...
With the advancement in personal mobile communication systems, need of antennas that gives ultra-wideband response has increased. In this paper a novel ultra-wide band plus shaped planar Microstrip antenna is proposed. The plus shaped structure is realized by combining two rectangular shaped planar monopole printed patches. A details parametric study to realize the ultra-wideband operation in 3 to...
Circular polarized microstrip antennas are required in applications wherein an uncertainty in the direction of received signal polarization exist. In this paper an offset slot cut circular microstrip antenna to realize circular polarization in 1000 MHz frequency band is proposed. It yields axial ratio bandwidth of 10 MHz (∼1.2%). To increase the axial ratio bandwidth its gap-coupled array configuration...
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