volume | PIER Journals

Abstract

This paper introduces a compact, circularly polarized (CP) truncated-corners patch antenna with a highly stable phase center for Global Positioning System (GPS) L1 applications. The antenna is excited by a central coaxial feed and features two corner truncations and a square-shaped slot with an integrated tab to generate CP. Designed for the GPS L1 band (1.563-1.587 GHz), the antenna achieves a -10 dB impedance matching bandwidth of 100 MHz (1.52-1.62 GHz), covering the target frequency range. Key performance metrics include a wide 3-dB axial ratio (AR) beamwidth of 190° and a fractional AR bandwidth of 1.5%. A prototype was fabricated and tested, and the measured results show reasonable agreement with simulations, confirming the design's effectiveness.

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Dr. Mohamed El Seddik Saf

Dr. Samir Dahmani

Dr. Djalal Ziani-Kerarti

Dr. Nail Alaoui