Design and Realization of Linear Array Triangular Patch Microstrip Antenna for Digital Television

Recently the development of technology in telecommunications system, especially Digital Television (DTV), is growing very rapidly. In Indonesia, the adopted technology is Digital Video Broadcasting Terrestrial Second generation (DVB-T2) and has been utilized since 2012. It uses the UHF frequency range that is same with analog television. One device that is used to support DVB-T2 application is the antenna. It should inherit wide enough bandwidth as well as high gain to obtain good performance in receiving the DTV signal. In this paper, design of a linear triangular microstrip patch array antenna for DTV application is proposed. The design is adopting CPW-fed, parasitic patch and air gap methods to obtain wide bandwidth and relatively high gain. The proposed antenna has been fabricated and measured. The actual obtained bandwidth of this antenna is about 400.2 MHz. The value of VSWR, return loss and gain is of about 1.25, −18.79 dB, 3.21 dBi respectively, and has a unidirectional radiation pattern with elliptical polarization. The proposed antenna has been used to receive DTV signals and showed good results.