TITLE:
Circularly Polarized Patch Array Antenna for GNSS Applications
AUTHORS:
Ahmad El Sayed Ahmad, Sébastien Saletzki, Khaled Khoder, Mahdi Kasmi, Manon Thomas, Antoine Mallet
KEYWORDS:
Patch Array Antenna, RHCP, CP, Gain, Axial Ratio, GPS
JOURNAL NAME:
Wireless Engineering and Technology,
Vol.16 No.3,
July
31,
2025
ABSTRACT: GPS antennas are found in a myriad of applications in various industries such as tracking, location identification, surveying etc. These antennas are used to connect to GPS satellites and acquire GPS data to identify the current location. A circularly polarized, low profile, GPS patch array antenna is designed and successfully measured. The proposed antenna is designed as a better alternative to the present commercial antenna in our laboratory, which is weak and often fails in areas where less localization time and accuracy are appreciated. The commercial antenna is a small size (5 cm × 5 cm) with gain less than 3 dB and Right-Hand Circular Polarization (RHCP) around 1.575 GHz (axial ratio ≤ 2 dB). This paper proposes the design of a RHCP array of patch antenna that operates at GPS L1 Band [1.563 - 1.587] GHz. The axial ratio of the proposed antenna is 0 dB while gain is 9.4 dB at working frequency of 1.575 GHz. Circular polarization is obtained by using a truncated corner technique. For the design and optimization of antenna, we use CST MWS software.