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An experiment is performed on a thin dielectric substrate for the compact printed Yagi type antenna described theoretically in [1]. This time the SMA connector at the feed is taken into design considerations. Measured results show that this implemented antenna has a high directivity of 7.3 dBi, a front-to-back ratio of 11.6 dB, a cross-polarization level of −33.5 dB, and 3-dB beamwidths of 73° and...
A planar bi-directional antenna with high directivities in the broadside directions on a thin FR4 dielectric substrate based on the transformation of the Yagi-Uda design rationale is proposed. This design can provide two main beams with high directivities, better than 6.0 dBi, in two broadside directions. The bandwidth is around 5.5% and efficiency of the antenna is 89.3%, which is better than 78...
A simple planar Yagi-Uda antenna with a single director and a concave parabolic reflector on a thin dielectric substrate is proposed. Through the innovative design, the simple Yagi-Uda antenna can achieve the high directivity of 9.0 dBi, front-to-back ratio of 14.5 dB, cross-polarization level of-38.7 dB, bandwidth of 6.0%, and the radiation efficiency of 85.1%, i.e., better than -1 dBi in terms of...
A planar Yagi-Uda antenna with a single director, a meandered driven dipole, and a concave parabolic reflector on a thin dielectric substrate is proposed. Through this design, the high directivity of 7.3 dBi, front-to-back ratio of 14.7 dB, cross-polarization level of -39.1 dB, bandwidth of 5.8%, and the radiation efficiency of 87.5%, which is better than -1 dBi in terms of the 3D average gain, can...
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