Parametric Study of a Wideband Endfire Circularly Polarized Antenna for Millimeter-wave Applications

In this paper, a wideband circularly polarized (CP) antenna element using substrate integrated waveguide technology is proposed at millimeter-wave (mmW) frequencies. The presented CP element is composed by a vertical metallic tapered slot antenna (TSA) and a horizontal printed dipole. A parametric analysis was carried out, in order to investigate the effects on far-field radiation fields caused by metallic TSA. For proof-of-concept demonstration, a CP element was fabricated and measured, showing a reasonable agreement with simulated ones. Due to its advantage of low-profile feeding structure, wideband, ease of integration, the presented CP element is a promising choice for mmW wireless applications.

Automated summary

This paper proposes a wideband circularly polarized (CP) antenna element using substrate integrated waveguide technology at millimeter-wave (mmW) frequencies. The proposed CP element consists of a vertical metallic tapered slot antenna (TSA) and a horizontal printed dipole. Through a parametric analysis, the effects of the metallic TSA on far-field radiation fields were investigated. A fabricated and measured CP element showed reasonable agreement with simulated results, demonstrating its potential for mmW wireless applications due to its low-profile feeding structure, wideband characteristics, and ease of integration.