Dual-band circular polarization antenna with mu-zero resonance and first-order negative mode
2016
In this paper, a compact dual-band circular polarization antenna is presented for GPS application. To make the antenna smaller, the mu-zero resonance mode of mu-negative transmission line and first-order negative mode of composite right-left handed transmission line are employed. The mu-zero resonance and first-order negative modes operates at L2(1.23 GHz) and L1(1.56 GHz) band, respectively. For excitation of two antennas, the cross aperture coupled feed is applied to the dual-band antenna. The size of the proposed antenna is 30mm by 30mm by 6.7mm, it has the peak gain of −0.23 dBic and 4.77 dBic in L1 and L2 band, respectively.
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