Design and performance of a low frequency cross-polarized log-periodic dipole antenna

TL;DR

This paper presents the design and testing of a cross-polarized log-periodic dipole antenna optimized for low-frequency solar radio observations, demonstrating effective polarization isolation and successful detection of circularly polarized solar emissions.

Contribution

It introduces a novel CLPD antenna design with high polarization isolation for low-frequency solar radio observations, and validates its performance through practical measurements and observations.

Findings

Isolation of -43 dBm in 65-95 MHz range

Successful detection of circularly polarized solar emission at 80 MHz

Demonstrates effectiveness of the antenna design for solar radio studies

Abstract

We report the design and performance of a cross-polarized log-periodic dipole (CLPD) antenna for observations of polarized radio emission from the solar corona at low frequencies. The measured isolation between the two mutually orthogonal log periodic dipole antennas was as low as $\approx$ -43 dBm in the 65-95 MHz range. We carried out observations of the solar corona at 80 MHz with the above CLPD and successfully recorded circularly polarized emission.