Application of a Parasitic Loop on Loosely Wound Short-Arm Spiral Antennas

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概要

• 論文の詳細を見る

• Loosely would short-arm tow-wire Archimedean spiral antennas are investigated. It is shown that good circularly polarized waves with axial ratio less than 2 dB are obtained when the outer circumference C of the spiral antenna is in the range of about 1.3λ<C<1.5λ, where λ is the free-space wavelength. To improve the antenna characteristics further, spiral antennas combined with a parasitic loop are examined. It is clarified that the parasitic loop greatly contributes to the improvement of the axial ratio and power gain.

• 社団法人電子情報通信学会の論文
• 1998-11-25

著者

• Tokumaru Shinobu

  The Faculty Of Science And Technology Keio University

• Morita Nagayoshi

  The Department Of Electrical Engineering Chiba Institute Of Technology

• KAZAMA Yasuhiro

  Laboratory, Japan Radio Co, . Ltd.

関連論文

• Source and Radiation Field Solution for Dielectric Scatterers : E Wave (Special Issue on Electromagnetic Theory : Foundations and Applications)
• Presumption of Permittivity for Dielectric Inverse Scattering Problem : Source and Radiation Field Solution(Special Issue on Computational Electromagnetics)
• A New Formulation for Radiated Fields Using Radiation Mode Expansions and Its Application to Radiation from Microstrip Antennas (Special Issue on Electromagnetic Theory)
• Development of an Analysis Method and Its Simulation Tool for Microstrip-Type Microwave Integrated Circuit Elements
• Application of a Parasitic Loop on Loosely Wound Short-Arm Spiral Antennas
• Quadrifilar Helical Antennas with Parasitic Loops

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