A 2 shape slot microstrip patch antenna for global positioning system satellite communication applications

Md Rubel Basar (Bangladesh Army University of Engineering and Technology)
Md Al-Amin (Bangladesh Army University of Engineering and Technology)
Effat Mirza (Bangladesh Army University of Engineering and Technology)
Partha Pratim Debnath (Bangladesh Army University of Engineering and Technology)
Md Rabiul Awal (Universiti Malaysia Terengganu (UMT))

Indonesian Journal of Electrical Engineering and Computer Science
Vol 31, No 3: September 2023

In this paper, a compact two-shape slot microstrip antenna is proposed for global positioning system (GPS) satellite application. The proposed antenna is designed with FR 4 substrate with a height of 1.6 mm, a dielectric constant εr of 4.3 within a compact size 56 x 56 mm2 area. The design parameters are optimized to achieve good performance. At the optimum setting of design parameters, this antenna shows good characteristics to cover L1 band 1,575.42 MHz, ± 12 MHz frequency which is used for GPS satellites. At the 1,572 MHz resonance frequency, this antenna achieves a minimum return loss of -30 dB covering a frequency bandwidth of 50 MHz (1,550 MHz – 1,600 MHz) at -10 dB reference level which ensures 100% bandwidth coverage of the L1 band. Besides, the proposed antenna achieved a maximum gain of 8.3 dBi and a beam width of 1010 at -3 dB point. In terms of other performance, such as voltage standing wave ratio (VSWR), directivity, radiation pattern, the proposed antenna shows good performance for the application of GPS satellites.