A Circularly Polarized Broadband Rhombic Loop Antenna

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概要

• 論文の詳細を見る

• A broadband rhombic loop antenna is introduced to radiate a circularly polarized wave. This antenna has a single feed and is located above a ground plane. The perimeter of the loop is typically about 1.3 wavelength. One gap is made on the loop to produce a traveling wave distribution of current. Antenna characteristics are calculated by the method of moments and compared with the measured data. By adjusting a perimeter and a gap position of the loop, circular polarization is obtained. In addition, with the appropriate vertex angle of the rhombus, the bandwidth of about 20% for the axial ratio(≤2dB) is attained and the possibility of controlling the input impedance is found. Finally, it is observed that the sense of circular polarization can be changed easily from left-hand to right-hand, and vice versa by switching one gap position to the other on the rhombic loop.

• 一般社団法人電子情報通信学会の論文
• 1996-06-25

著者

• Morishita Hisashi

  The Department Of Communications Engineering National Defense Academy

• Hirasawa Kazuhiro

  The Institute Of Information Science And Electronics University Of Tsukuba

• NAGAO Tsukasa

  the Dept. of Electrical and Engineering, National Defense Academy

• Nagao Tsukasa

  The Dept. Of Electrical And Engineering National Defense Academy

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• Analysis of Handset Antennas in the Vicinity of the Human Body by the Electromagnetic Simulator
• Design of a Mode Converter for Quasi-Optical Amplifiers by Using 3D EM Simulation Software
• A Circularly Polarized Broadband Rhombic Loop Antenna

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