Circularly Polarized Antenna Array for L-Band Applications

The design of antenna array in the wireless communication system can be used to achieve high gain, steering capability and also to reduce the effect of fading. These antenna array is suitable for L-band applications such as military, global positioning system, digital audio broadcasting and other telecommunication areas. This paper presents a simple, low cost, low profile triangular micro strip antenna array with circular polarization providing high gain by 4×1 array. The designed antenna array provide the return loss below-20 dB and the gain of this antenna array is found to be around 12 dB. The resonant frequency of this antenna array is 1.29 GHz. Single triangular micro strip patch is resonating at 1.29 GHz and quarter wave transformer with power division method is used for matching the loss due to reflection. Single patch is providing the gain of 6.31dB.