Ultra-Wideband Miniaturized Log-Periodic Monopole Antenna Array

This paper describes a log-periodic monopole array (LPMA) that has a miniaturized size and can operate in 2–18 GHZ broadband. Unlike traditional logarithmic Pitch and height (LPMA) antennas, evenly spaced and evenly spaced antennas simplify the design process and maintain a low profile. The use of top cap monopole reduces the height and size of the antenna. The proposed antenna uses curved microstrip lines as a feed network, which greatly reduces the length of the antenna. The simulation results show that the impedance bandwidth is 2–18 GHz and the standing wave ratio is less than 3. The analog peak realization gain is almost between 4.1-7.3dBi. It has enormous application potential in commercial communication systems.