Ring Fractal Patch Antenna for GPS Applications

A novel patch antenna made with ring fractal geometry is presented for GPS L1 band applications. The proposed antenna is designed and simulated in Ansys HFSS for the frequencies 1.2-2 GHZ. The antenna exhibits average 300 MHZ bandwidth in which value of the reflection coefficient (|S
₁₁
|) ≤ -20 dB is achieved. The proposed structure has optimum results at 10, 7.5 and 5.5 mm dimensions of r
₁
, r
₂
and r
₃
respectively. The lowest |S
₁₁
| obtained is -40.617 dB at f = 1.59 GHZ.