In this paper, a wideband ultra-high frequency (UHF) antenna which can be flush-mounted is designed. The antenna is composed of three parts: the cavity-backed discone antenna, the short-circuited structure between the top plate of the discone and ground, and the multi-plate antenna. These parts respectively generate medium, low and high resonance frequencies, thus widening the bandwidth of antenna efficiently. The influences of primary structural parameters on the resonance frequencies and impendence bandwidth are analyzed, then the optimal values are given, and the prototype with optimal parameters is fabricated. The measurement results show that the impedance bandwidth of VSWR≤2.5 achieves 65%, covering a frequency range from 430 MHz to 845 MHz, and the antenna has omni-directional patterns. Meanwhile, the antenna has very low profile; the overall height of it is less than one tenth of the largest operating wavelength of the antenna. This antenna has great potential in practical applications to aircrafts and vessels where flush-mounted antennas are required.
CHEN Aixin, JIANG Tiehua, SU Donglin, WEI Wenxuan, ZHANG Yanjun, YAN Wei
. Design of an Airborne Complex-structural Wideband Flush-mounted Antenna[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2011
, 32(5)
: 900
-907
.
DOI: CNKI:11-1929/V.20110324.1151.002
[1] Josefsson L, Persson P. Conformal array antenna theory and design [M]. Wiley-IEEE Press, 2006.
[2] 藤本共荣, J. R. 詹姆斯. 移动天线系统手册[M]. 北京: 人民邮电出版社, 1997. Fujimoto K, James J R. Mobile antenna system handbook[M]. Beijing: Posts & Telecom Press, 1997. (in Chinese)
[3] M. B. 维施可夫. 船用通信天线[M]. 北京: 国防工业出版社, 1983. Вершков М. Marine communication antenna[M]. Beijing: National Defense Industry Press, 1983. (in Chinese)
[4] Qing X, Chen Z, Chia M Y W. UWB characteristic of disc cone antenna//Proceedings of IEEE International Workshop on Antenna Technology. 2005: 97-100.
[5] Dionigi M, Mongiardo M, Tomassoni C. Investigation on the phase center of ultra wideband discone antennas//Proceedings of German Microwave Conference. 2010: 59-62.
[6] Januszkiewicu L, Hausman S. Combined spiral-discone broadband antenna for indoor applications//Proceedings of 15th IEEE International Symposium on PIMR. 2004: 422-426.
[7] Kim K, Kim J, Park S. An ultra wide-band double discone antenna with the tapered cylindrical wires[J]. IEEE Transactions on Antennas and Propagation, 2005, 53(10): 3403-3406.
[8] Zhang Y, Brown A. The discone antenna in a BPSK direct-sequence indoor UWB communication system[J]. IEEE Transactions on Microwave Theory and Techniques, 2006, 54(4): 1675-1680.
[9] Kyi Y, Li J, Beng G. Broadband characteristics of small disc cone antennas//Antennas and Propagation Society International Symposium, 2007 IEEE. 2007: 4769-4772.
[10] 卢万铮. 天线理论与技术[M]. 西安: 西安电子科技大学出版社, 2004. Lu Wanzheng. Antenna theory and techniques[M]. Xi’an: Xidian University Press, 2004. (in Chinese)
[11] Fujimoto K, Henderson A, Hirasawa K. 小天线[M]. 俱新德, 肖良勇, 译. 北京:国防工业出版社, 1991. Fujimoto K, Henderson A, Hirasawa K. Small antennas[M]. Ju Xinde, Xiao Liangyong, translated. Beijing: National Defense Industry Press, 1991. (in Chinese)
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