IMPROVEMENTS IN IMPEDANCE BANDWIDTH OF MICROSTRIP PLANAR DIPOLE ANTENNAS FOR DIGITAL TELEVISION SIGNAL RECEPTION USING SLOT TECHNIQUES
DOI:
https://doi.org/10.55766/sujst10141Keywords:
Bandwidth, Digital Television Application, Dipole-Type Antenna, Enhancement of Impedance, Microstrip, Slot TechniqueAbstract
This research investigates the enhancement of impedance bandwidth in a planar circuit microstrip dipole-type antenna for digital television (DTV) applications. The printed microstrip dipole-type antenna was designed with a center frequency of 650 MHz. We used slot techniques to increase the bandwidth. Through the investigation, it was discovered that the position and number of slots can effectively control the impedance of bandwidth. A bandwidth of 453 MHz, which supports the application for the digital TV range (470 MHz to 862 MHz), was achieved using 7 slots. Furthermore, this proposed approach provides the benefit of a broader and more well-matched impedance bandwidth. After applying slot to the planar dipole, the antenna achieved a bandwidth of 63.65%, ranging from 452 MHz to 905 MHz, covering the DTV application range while also expanding gain to approximately 1.13 dBi at the center frequency, with a gain ranging from 2.28 dBi up to 3.41 dBi compared with a conventional planar dipole antenna. The radiation efficiency was consistently greater than 65% across the antenna’s frequency band. Measurement results demonstrated good agreement with the corresponding simulation results, validating the broadband performance for application reception in the Digital TV range.
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