TY - JOUR
T1 - Wideband internal dipole-loop antenna with switchable and tunable frequency operation for ultra-high-definition television
AU - Van Trinh, Thai
AU - Kim, Gyonyun
AU - Kim, Jungjin
AU - Jung, Changwon
N1 - Publisher Copyright:
© The Institution of Engineering and Technology 2019.
PY - 2019/4/17
Y1 - 2019/4/17
N2 - This study presents the implementation of an internal antenna for ultra-high-definition televisions (UHD TVs), which has encountered challenges such as inherently narrow impedance bandwidths, limited space, and the effect of material properties of the TV to the antenna performance. The proposed antenna consists of a pair of rectangular arms (the dipole mode), which are fed by the coaxial cable, these arms are also connected to the ground plane (the loop mode) through two shortings that excite an additional resonance mode. In addition, reconfigurable antennas also offer attractive potential solutions to solve the challenging antenna problems related to narrow bandwidth using the ability to switch and tune operation frequency. Herein, a frequency reconfigurable dipole-loop antenna which can cover the entire ultra-high-frequency band (UHF: 470-771 MHz, BW: 47.4%) is achieved using PIN diodes for switchable frequency and varactor diodes for tunable frequency. A 49-inch UHD TV is used for the practical implementation experiment. The TV bezel (?r = 3.5, tand = 0.005) is used as the substrate for the antenna design. The designed antenna for UHD TV applications achieves good impedance matching and stable radiation characteristics in the UHF band, considering S11 = - 6 dB (VSWR 3:1) as the impedance matching criterion.
AB - This study presents the implementation of an internal antenna for ultra-high-definition televisions (UHD TVs), which has encountered challenges such as inherently narrow impedance bandwidths, limited space, and the effect of material properties of the TV to the antenna performance. The proposed antenna consists of a pair of rectangular arms (the dipole mode), which are fed by the coaxial cable, these arms are also connected to the ground plane (the loop mode) through two shortings that excite an additional resonance mode. In addition, reconfigurable antennas also offer attractive potential solutions to solve the challenging antenna problems related to narrow bandwidth using the ability to switch and tune operation frequency. Herein, a frequency reconfigurable dipole-loop antenna which can cover the entire ultra-high-frequency band (UHF: 470-771 MHz, BW: 47.4%) is achieved using PIN diodes for switchable frequency and varactor diodes for tunable frequency. A 49-inch UHD TV is used for the practical implementation experiment. The TV bezel (?r = 3.5, tand = 0.005) is used as the substrate for the antenna design. The designed antenna for UHD TV applications achieves good impedance matching and stable radiation characteristics in the UHF band, considering S11 = - 6 dB (VSWR 3:1) as the impedance matching criterion.
UR - https://www.scopus.com/pages/publications/85064221209
U2 - 10.1049/iet-map.2018.5547
DO - 10.1049/iet-map.2018.5547
M3 - Article
AN - SCOPUS:85064221209
SN - 1751-8725
VL - 13
SP - 623
EP - 630
JO - IET Microwaves, Antennas and Propagation
JF - IET Microwaves, Antennas and Propagation
IS - 5
ER -