Design of a Novel Multiband Miniaturized Cylindrical Conformal Microstrip Antenna

Conformal microstrip antenna is an important study field in microwave and communications. In this paper, a novel design of miniaturized cylindrical conformal microstrip antenna (MCCMA) for multi-band DCS/Bluetooth/WLAN applications is proposed. It consists of a radiating element with a hexagon slot and several rectangular slots, a FR4 substrate, a coax feeding and GND. The miniaturization characteristic is achieved by using the rectangular slot to bend the path of the current. Simulation and analysis show that the antenna has a multi-band characteristic and can achieve a reduction of the size. A radius value of the antenna is 0.13λ0 with respect to the lowest operating frequency centered at 1.8 GHz. It can cover the 1.8 GHz DCS, 2.45GHz/5.8GHz WLAN and 2.45GHz Bluetooth bands on HFSS Software. The simulated results show that the antenna has good radiation patterns across the operations which can be applied in present wireless communication system.