Publisher : The Korean Institute of Broadcast and Media Engineers
DOI : 10.5909/JBE.2016.21.3.404
Title & Authors
Study and Adaptation of FM CP-Ring Antenna Radiation Pattern Transmission Facility Choi, Soocheol; Cho, Kiryang;
In this paper, we investigate the radio wave radiation pattern to measure the actual field strength for the transmission antenna dipole antenna and the CP-ring antenna being used in our country as FM station, and the comparison was for field application. Compare results, If the transmitting station and the relay station which is located in the middle of a service area has been a useful CP-dipole antenna (four directions). CP-ring antenna having a directivity because the reflection effect of the tower was able to adjust the orientation to prevent the spread of menstrual another service area in the main direction was able to radiate high propagation 5~9dB. Especially, If the transmitting station and the relay station is located on one side of the service area for radiating radio waves in three directions by using the CP-ring antennas focus the orientation of the antenna in populated areas and road area can improve the broadcast reception environment.
CP-ring antenna;CP-dipole antenna;radio wave radiation pattern;four direction CP-dipole;
Korea Radio Promotion Association, "Study on low power frequency and the frequency used to improve public sector institutions", 2003
ETSI EN 300 220, "Electromagnetic compatibility and radio spectrum Matters(ERM) ; Short range devices(SRD) ; Radio equipment to be used in the 25MHz to 1000MHz frequency range with power levels ranging up to 500mW ; Part 1 : Technical characteristics and test methods", Apr. 2006.
Hosseini, M. and S. Bashir, "Circularly polarized radiation by 22 Hosseini and Bashir a dipole antenna over an innovative artificial ground plane," Loughborough Antennas and Propagation Conference, 453-456, Loughborough, UK, Mar. 2008.
Yang, F. and Y. Rahmat-Samii, “A low profile single dipole antenna radiating circularly polarized waves,” IEEE Trans. Antennas Propagat., Vol. 53, No. 9, 3083–3086, 2005.
Johnson, R. C. and H. Jasik, Antenna Engineering Handbook, 2nd edition, McGraw-Hill, NY, 1984.