A High Gain Handheld Circularly Polarized Yagi-Uda Antenna with Coupled-Feeding Structure

In this paper, a Yagi-Uda antenna operating from 410 MHz to 480 MHz is designed. The configuration comprises of two linearly polarized Yagi-Uda antennas placed orthogonally to form circular polarization. In order to validate the proposed design, simulations and measurements are performed. The results indicate that the design achieves a <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">s₁₁ <</tex> -10 dB bandwidth spanning from 410 MHz to 480 MHz and an axial ratio (AR) < 3 dB bandwidth from 460 MHz to 480 MHz, with a maximum gain of 10.9 dBi. The antenna is a promising candidate for satellite receiving applications.