Abstract
A cylindrical conformai microstrip Yagi antenna working around 10 GHz with endfire radiation and vertical polarization is proposed. The presented Yagi antenna has advantages of low profile, small size and high endfire gain. Each element of the Yagi antenna is a microstrip antenna (MSA) with one edge shorted, which can be regarded as a half MSA (HMSA). Furthermore, a cylindrical conformal Yagi array consisted of 24 above Yagi antennas is presented to improve the endfire radiation performance. Simulated results show that an exactly endfire radiation with 21 dB gain can be provided. Besides, beaming scanning in the endfire direction with side lobe level (SLL) lower than −20 dB can also be realized by adjusting the amplitudes and phases of the antennas in the array.
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