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A new perturbing method of utilizing a crossed ground slot is proposed for a right-handed circularly polarized (RHCP) microstrip antenna for GPS L1 band of 1.575 GHz. The crossed-slot at the ground plane and equally-divided perpendicular feed structure yields two orthogonal frequencies with the 90-degree phase difference. As a result, the TM10 and TM01 modes for the right-handed circularly polarized...
In this paper, a new antipodal linearly tapered slot antenna (ALTSA) with unequal half-circular slots embedded on both edge-sides is proposed to improve an antenna gain. The proposed antenna operates over the frequency band from 3.1 GHz to more than 10.6 GHz, which is assigned to Ultra-Wideband (UWB) wireless communication. The proposed antenna has been improved in a gain and reduced to backward radiation...
In this paper, a new composite right/left-handed transmission line (CRLH-TL) with inductive ground slots is proposed to improve an operating bandwidth for zeroth-order resonant antenna applications. From the equivalent circuit model of the inductive slot-loaded CRLH-TL (SL CRLH-TL) unit-cell, the characteristic impedance and the dispersive relation are derived. By adding inductors on the ground slots,...
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