A novel coaxial CTS antenna design
DOI:
https://doi.org/10.1109/ICATT.2007.4425200Keywords:
coaxial CTS antenna, monopole, omnidirectional patternAbstract
CTS (Continuous Transverse Stub) antenna radiates electromagnetic wave with its transverse stubs on transmission line, and its pattern in horizon plane is omnidirectional. This paper proposes a novel coaxial CTS structure, in which a monopole is applied in coaxial CTS antenna, instead of a matching load. This method may not only improve the radiation ratio, but also reduce the height of antenna. There are two stubs and a monopole composing an antenna, and the dielectric in stubs is air, which could predigest the manufacture progress. Through the electromagnetic simulation software CST microwave studioreg, properties of the CTS antenna working at 12 GHz is obtained by finite integral method. The monopole ending makes the radiation efficiency higher, and keeps the input impedance of CTS antenna. The gain is higher than that of three-class coaxial CTS. For its characteristics, the antenna could be used in retransmission and personal communication system.References
ISKANDER, MAGDY F.; ZHANG, ZHIJUN; YUN, ZHENGQING; ISOM, ROBERT. Coaxial continuous transverse stub (CTS) array. IEEE Microwave Wireless Components Lett., Dec. 2001, v.11, n.12, p.489-491, doi: http://dx.doi.org/10.1109/7260.974555.
ZHANG, ZHIJUN; ISKANDER, MAGDY; YUN, ZHENGQING. Coaxial Continuous Transverse Stub (CTS) Array. Proc. of Antennas and Propagation Society Int. Symp., 16-21 July 2000, Salt Lake City, UT, USA. IEEE, 2000, v.1, p.332-335, doi: http://dx.doi.org/10.1109/APS.2000.873830.
ISOM, R.; ISKANDER, M.F.; YUN, Z.; ZHANG, Z. Design and development of multiband coaxial continuous transverse stub (CTS) antenna arrays. IEEE Trans. Antennas Propag., Aug. 2004, v.52, n.8, p.2180-2184, doi: http://dx.doi.org/10.1109/TAP.2004.832336.
ISOM, ROBERT; ISKANDER, MAGDY F.; YUN, ZHENGQING; ZHANG, ZHIJUN. Design and development of Multi-band Antenna Array for Multi-Service Wireless Communication Networks. Proc. of 58th IEEE Vehicular Technology Conf., 2003, p.37-39.
ISOM, R.; ISKANDER, M.; ZHANG, Z.; YUN, Z. Muti-Band and Broadband Coaxial CTS Array Design. IEEE Antennas and Propagaton Society AP-S Int. Symp. Digest, Jul. 2001, v.8-13, n.2, p.101-103.
CST Ltd, CST MICROWAVE STUDIO@ 5 User's Manual, 2003.
