A Compact Conical Shape Patch Antenna for Micro-Wave and Millimeter-Wave Applications

In this paper, a compact, simple, high performance multi-band antenna is presented for WLAN and millimeter-wave applications. As compared to the available reported designs the proposed antenna has improved characteristics in terms of size, bandwidth and multiband operation. Rogers RT5880 substrate is used for designing of the proposed antenna with microstrip feeding. The overall dimension of the designed antenna is 30*30*0.5 mm3which is smaller than (0.35λ*0.35λ) at its lowest frequency of operation i.e., 2.4 GHz. According to the criteria of -10 dB matching bandwidth the designed antenna resonating at three different frequency bands in both microwave band and millime-ter-wave band which are (2.45 GHz - 2.495 GHz), (5 GHz - 6.3 GHz) and (23 GHz - 28 GHz). The antenna gives gain of 1.5 dBi, 3.58 dBi, 4.42 dBi and 4.79 dBi at 2.4 GHz, 5.2 GHz, 5.8 GHz and 27.5 GHz respectively. The reduced size, simple design, multiband operation and high bandwidth are some of the advantages of the proposed antenna over the available designs which make it an ideal candidate for WLAN and millimeter-wave applications.