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A coplanar waveguide (CPW)-fed dual-band antenna operating at linear and circular polarization is presented in this letter. A novel composite right/left-handed (CRLH) unit cell is designed as a radiation element that can provide zeroth-mode resonance and positive-mode resonance at the lower and upper frequency. A TM mode orthogonal to 1st-Order is excited by a square complementary split-ring...
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