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A low-profile wideband unidirectional dipole antenna with U and L-shaped slots loaded is proposed. A prototype with a thickness of 0.175λ was fabricated and measured. The proposed antenna achieves a wide impedance bandwidth of 57% (S11≤ −10 dB) from the frequency of 1.56 to 2.79 GHz. The cross polarization is less than −21 dB over the operating bandwidth. The antenna has an average gain of 8.6 dBi...
Two coplanar waveguide-fed square monopole antennas are presented, one novel antenna is fed with a trident-shape feeding strip, for comparison, the other antenna is fed with a simple feeding strip. By simulating two antennas with the same size, the novel square monopole antenna studied shows a very wide bandwidth of about 9.9 GHz(about 2.1-12 GHz, bandwidth ratio about 1: 5.7), which is two times...
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