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2019•Unpublished venueRequires access

Development of Folded Rhombic Antenna without Balun for Microwave Frequency Range

Kyo Kobayashi, Toshiya Ishizaki, Shinobu Ishigami, Ken Kawamata, Katsushige Harima

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Abstract

As a broadband antenna, we are now researching and developing a new-type antenna not only for using electromagnetic interference (EMI) measurements but also radiofrequency (RF) immunity tests including a radiator for transient immunity tests. In our previous studies, the complex antenna factors (CAF) and actual gains of the prototype antennas were measured by the 3-antenna method. However, there were periodic fluctuations of these characteristics due to the mismatch between the balun and the antenna feed point. In this paper, these characteristics of an improved folded-rhombic antenna without balun are reported.

About this research paper

What this paper is about

As a broadband antenna, we are now researching and developing a new-type antenna not only for using electromagnetic interference (EMI) measurements but also radiofrequency (RF) immunity tests including a radiator for transient immunity tests. In our previous studies, the complex antenna factors (CAF) and actual gains of the prototype antennas were measured by the 3-antenna method. However, there were periodic fluctuations of these characteristics due to the mismatch between the balun and the antenna feed point. In this paper, these characteristics of an improved folded-rhombic antenna without balun are reported.

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Available abstract

As a broadband antenna, we are now researching and developing a new-type antenna not only for using electromagnetic interference (EMI) measurements but also radiofrequency (RF) immunity tests including a radiator for transient immunity tests. In our previous studies, the complex antenna factors (CAF) and actual gains of the prototype antennas were measured by the 3-antenna method. However, there were periodic fluctuations of these characteristics due to the mismatch between the balun and the antenna feed point. In this paper, these characteristics of an improved folded-rhombic antenna without balun are reported.

Key concepts: Balun, Antenna (radio), Coaxial antenna, Antenna measurement, Dipole antenna, Antenna tuner, Acoustics, Electromagnetic interference

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