A Wideband Omnidirectional Antenna for Indoor Digital Terrestrial Television Application

A vertically polarized antenna with omnidirectional radiation patterns in the horizontal plane is introduced. The proposed antenna is composed of two crossed bow-tie monopole antennas. In order to reduce the height of the proposed antenna, rectangular slots are loaded on the edge of the antenna to expand the current path. The proposed antenna obtains a -10 dB impedance bandwidth from 470 to 862 MHz. In addition, good omnidirectional radiation patterns and gain more than 1.3 dBi are realized by the proposed antenna in the working frequency band. The proposed antenna is suitable for indoor digital terrestrial television (DTTV) application.