A Practical Approach To The Optimization Of Vertical Linear Antenna Arrays For Dtv Reception

Abstract

This study presents a practical optimization approach for a vertical linear Yagi-Uda array to enhance digital television (DTV) reception in rural and suburban areas. A manual parametric sweep in CST Studio Suite was used to optimize element lengths and spacing, targeting the DVB-T2 sub-band of 520–647 MHz. The proposed two-element vertical linear Yagi-Uda array achieved a return loss of −32.5 dB and an average gain improvement of 3.12 dB over a single-element configuration, with a peak gain of 12.9 dBi. Statistical analysis confirmed the improvement was significant (p < 0.05) without introducing adverse effects on bandwidth or impedance matching. Compared with published manual sweep and simulation-based optimization methods, this design achieves competitive performance while requiring no external optimization integration, offering a faster, more straightforward workflow for practical DTV deployment.