A Comparative Performance Analysis of Two Printed Circular Arrays for Power-Based Vehicle Localization Applications

الملخص EN

A comparative study of the performance characteristics of a printed 8-element V-shaped circular antenna array and an 8-element Yagi circular array operating at 2.45 GHz for vehicular direction finding applications is presented.

Two operating modes are investigated; switched and phased modes.

The arrays were fabricated on FR-4 substrates with 0.8 mm thickness.

Measured and simulated results were compared.

Radiation gain patterns were measured on a 1 m diameter ground plane that resembles the rooftop of a vehicle.

The HPBW of the Yagi was found to be about 3° narrower than its V-shaped counterpart when measured above a reflecting ground plane and operated in switched mode.

The printed V-shaped antenna array offers 2.5 dB extra gain compared to the printed Yagi array.