Comparison of Feeding Techniques for EMCP Array Antenna

This paper presents parametric study and comparison between coaxial feed and microstrip line feed for electromagnetic coupled patch (EMCP) array antenna. This antenna is resonating at 2.4 GHz. This array consists of four elements each at top layer and bottom layer. Measured bandwidth of an eight-element planar array is 444 MHz and return loss of 33 dB. Antenna is simulated in CST microwave studio. Fabricated antenna shows rise in bandwidth of 155 MHz and return loss of 9 dB.