Portable Wideband Directional Antenna Scheme with Semicircular Corrugated Reflector for Digital Television Reception
This research proposed a portable wideband horizontally-polarized directional antenna scheme with a radome for digital terrestrial television reception. The operating frequency band of the proposed antenna scheme is 470–890 MHz. The portable antenna scheme was an adaptation of the Yagi-Uda antenna,...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-07-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/22/14/5338 |
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| author | Bancha Luadang Rerkchai Pukraksa Pisit Janpangngern Khanet Pookkapund Sitthichai Dentri Sompol Kosulvit Chuwong Phongcharoenpanich |
| author_facet | Bancha Luadang Rerkchai Pukraksa Pisit Janpangngern Khanet Pookkapund Sitthichai Dentri Sompol Kosulvit Chuwong Phongcharoenpanich |
| author_sort | Bancha Luadang |
| collection | DOAJ |
| description | This research proposed a portable wideband horizontally-polarized directional antenna scheme with a radome for digital terrestrial television reception. The operating frequency band of the proposed antenna scheme is 470–890 MHz. The portable antenna scheme was an adaptation of the Yagi-Uda antenna, consisting of a folded bowtie radiator, a semicircular corrugated reflector, and a V-shaped director. Simulations were carried out, and an antenna prototype was fabricated. To validate, experiments were undertaken to assess the antenna performance, including the impedance bandwidth (|<i>S</i><sub>11</sub>| ≤ −10 dB), gain, and unidirectionality. The measured impedance bandwidth was 75.93%, covering 424–943 MHz, with a measured antenna gain of 2.69–4.84 dBi. The radiation pattern was of unidirectionality for the entire operating frequency band. The measured xz- and yz-plane half-power beamwidths were 150°, 159°, 160° and 102°, 78°, 102° at 470, 680, and 890 MHz, with the corresponding cross-polarization below −20 dB and −40 dB. The radome had a negligible impact on the impedance bandwidth, gain, and radiation pattern. The power obtained for the outdoor test, at 514 MHz, was 38.4 dBµV (−70.4 dBm) with a carrier-to-noise ratio (C/N) of 11.6 dB. In addition, the power obtained for the indoor test was 26.6 dBµV (−82.2 dBm) with a C/N of 10.9 dB. The novelty of this research lies in the concurrent use of the Yagi-Uda and bowtie antenna technologies to improve the impedance bandwidth and directionality of the antenna for digital terrestrial television reception. |
| first_indexed | 2024-03-09T05:56:47Z |
| format | Article |
| id | doaj.art-f0e3ebd083884afd9600eaee3abc74ea |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-09T05:56:47Z |
| publishDate | 2022-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-f0e3ebd083884afd9600eaee3abc74ea2023-12-03T12:13:14ZengMDPI AGSensors1424-82202022-07-012214533810.3390/s22145338Portable Wideband Directional Antenna Scheme with Semicircular Corrugated Reflector for Digital Television ReceptionBancha Luadang0Rerkchai Pukraksa1Pisit Janpangngern2Khanet Pookkapund3Sitthichai Dentri4Sompol Kosulvit5Chuwong Phongcharoenpanich6Faculty of Engineering, Rajamangala University of Technology Rattanakosin, Nakhon Pathom 73170, ThailandSchool of Engineering, King Mongkut’s Institute of Technology Ladkrabang, Bangkok 10520, ThailandSchool of Engineering, King Mongkut’s Institute of Technology Ladkrabang, Bangkok 10520, ThailandFaculty of Science and Technology, Phranakhon Si Ayutthaya Rajabhat University, Phranakhon Si Ayutthaya 13000, ThailandCollege of Industrial Technology, King Mongkut’s University of Technology North Bangkok, Bangkok 10800, ThailandSchool of Engineering, King Mongkut’s Institute of Technology Ladkrabang, Bangkok 10520, ThailandSchool of Engineering, King Mongkut’s Institute of Technology Ladkrabang, Bangkok 10520, ThailandThis research proposed a portable wideband horizontally-polarized directional antenna scheme with a radome for digital terrestrial television reception. The operating frequency band of the proposed antenna scheme is 470–890 MHz. The portable antenna scheme was an adaptation of the Yagi-Uda antenna, consisting of a folded bowtie radiator, a semicircular corrugated reflector, and a V-shaped director. Simulations were carried out, and an antenna prototype was fabricated. To validate, experiments were undertaken to assess the antenna performance, including the impedance bandwidth (|<i>S</i><sub>11</sub>| ≤ −10 dB), gain, and unidirectionality. The measured impedance bandwidth was 75.93%, covering 424–943 MHz, with a measured antenna gain of 2.69–4.84 dBi. The radiation pattern was of unidirectionality for the entire operating frequency band. The measured xz- and yz-plane half-power beamwidths were 150°, 159°, 160° and 102°, 78°, 102° at 470, 680, and 890 MHz, with the corresponding cross-polarization below −20 dB and −40 dB. The radome had a negligible impact on the impedance bandwidth, gain, and radiation pattern. The power obtained for the outdoor test, at 514 MHz, was 38.4 dBµV (−70.4 dBm) with a carrier-to-noise ratio (C/N) of 11.6 dB. In addition, the power obtained for the indoor test was 26.6 dBµV (−82.2 dBm) with a C/N of 10.9 dB. The novelty of this research lies in the concurrent use of the Yagi-Uda and bowtie antenna technologies to improve the impedance bandwidth and directionality of the antenna for digital terrestrial television reception.https://www.mdpi.com/1424-8220/22/14/5338corrugated reflectordigital televisionportable antennaradomewideband antenna |
| spellingShingle | Bancha Luadang Rerkchai Pukraksa Pisit Janpangngern Khanet Pookkapund Sitthichai Dentri Sompol Kosulvit Chuwong Phongcharoenpanich Portable Wideband Directional Antenna Scheme with Semicircular Corrugated Reflector for Digital Television Reception Sensors corrugated reflector digital television portable antenna radome wideband antenna |
| title | Portable Wideband Directional Antenna Scheme with Semicircular Corrugated Reflector for Digital Television Reception |
| title_full | Portable Wideband Directional Antenna Scheme with Semicircular Corrugated Reflector for Digital Television Reception |
| title_fullStr | Portable Wideband Directional Antenna Scheme with Semicircular Corrugated Reflector for Digital Television Reception |
| title_full_unstemmed | Portable Wideband Directional Antenna Scheme with Semicircular Corrugated Reflector for Digital Television Reception |
| title_short | Portable Wideband Directional Antenna Scheme with Semicircular Corrugated Reflector for Digital Television Reception |
| title_sort | portable wideband directional antenna scheme with semicircular corrugated reflector for digital television reception |
| topic | corrugated reflector digital television portable antenna radome wideband antenna |
| url | https://www.mdpi.com/1424-8220/22/14/5338 |
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