The week's pick
Reseach Article
Design and Analysis of Circular Polarized Receiver Antenna as Video Stabilizer in UHF Television
| International Journal of Computer Applications |
| Foundation of Computer Science (FCS), NY, USA |
| Volume 175 - Number 30 |
| Year of Publication: 2020 |
| Authors: Jovy Rexiramdhan, Farid Thalib |
10.5120/ijca2020920836
|
Jovy Rexiramdhan, Farid Thalib . Design and Analysis of Circular Polarized Receiver Antenna as Video Stabilizer in UHF Television. International Journal of Computer Applications. 175, 30 ( Nov 2020), 12-18. DOI=10.5120/ijca2020920836
Abstract
In analog terrestrial television systems received video disturbances often occurs. Polarization parameters and radiation patterns are important things that are rarely considered in television antenna systems. In addition, the Pulse synchronize parameter on the CVBS signal can be a reference for the ongoing video stability. Researchers conducted an experiment by designing and analyzing the characteristics of a circular polarized Skew Planar Wheel (SPW) antenna and comparing it with a Dipole antenna which has linear polarization. Both of these antennas have omnidirectional radiation and are implemented parallel as analog terrestrial television receiver antennas at UHF frequencies. The test is performed by rotating the antenna tilt angle at 0º, 45º, 90º horizontally and 45º and 90º vertically to the direction of the transmitter. The lowest VSWR at the center frequency of 642 MHz SPW antenna is obtained 1.5 while for Dipole 1.04. The maximum S-parameter value of SPW is -13.86 dB while the Dipole is -34.03 dB. The maximum Gain of the SPW antenna is 1.38 dB while the Dipole has a greater maximum Gain of 2.21 dB. Based on the test results, it is known that the SPW antenna can help stabilize the amplitude value of the Pulse synchronize parameter to remain around -300mV at all test angles, this makes the video displayed on television stable. Whereas for the Dipole antenna there are disturbances at the testing angle 90º horizontally and 45º, 90º vertically. In addition, there is no ghost image when using SPW antenna compared to Dipole.
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