Abstract
In this study, an internal antenna integrated into a 49-inch TV model is presented, operating in the ultra-high frequency (UHF: 470‒771 MHz) band for signal reception in ultra-high definition television (UHD-TV) applications. The design of the proposed antenna has encountered major challenges such as relatively narrow impedance bandwidth, limited space, the effect of material properties, and the electromagnetic interference from the other components inside the TV that deteriorate the performance of the antenna considerably. The antenna is positioned directly on the bezel frame (made of polycarbonate-acrylonitrile butadiene styrene: ԑ r = 3.5, tan δ = 0.005) of the TV model as the substrate for the antenna. A monopole-type antenna is chosen to easily implement along the long side of the bezel frame in a very narrow spacing between the display and the casing of a TV (∼2.5 mm). Combined with a sleeve feed, tapered line, and parasitic strips, the proposed internal antenna exhibits a wideband impedance characteristics. The measured results show that a radiation efficiency of higher than 70% and a peak gain of 4.8 dBi are obtained over the operating frequency range of 430‒940 MHz (relative bandwidth of 75%), which cover the entire UHF band. These results indicate that the proposed antenna is very suitable for UHD-TV applications.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call