Log-periodic slot antenna with novel cavity

被引：0

作者：

Liu, Ying ^{[1
]}

Wang, Wei ^{[1
]}

Chen, Yudong ^{[2
]}

Gong, Shuxi ^{[1
]}

机构：

[1] National Key Laboratory of Science and Technology on Antennas and Microwaves, Xidian University

[2] Beijing Aeronautical Technology Research Center

来源：

Dianbo Kexue Xuebao/Chinese Journal of Radio Science | 2014年 / 29卷 / 02期

关键词：

Cavity-backed; CPW; Log-periodic slot antenna; Ultra-wideband radar;

D O I：

10.13443/j.cjors.2013053002

中图分类号：

学科分类号：

摘要：

A cavity-backed log-periodic slot antenna with unidirectional pattern is presented in this paper for UWB radar detection system. The antenna is fed by a special coplanar waveguide (CPW) that is gradual-changed and ultra-wideband matched. In order to make the slot antenna radiate directionally, a cavity is set to the back side of it. To achieve a voltage standing wave ratio (VSWR) target which is below 2.5, a modification is proposed on the basis of rectangle cavity. Both simulated and measured results demonstrate that radiation patterns of the proposed antenna are unidirectional and quite stable within the band. Owing to the novel cavity and application of the absorbing material, the proposed antenna resonates at the lowest frequency point of 0.9 GHz as well as high gain obtained in the full frequency bands. The antenna is suitable for the applications in guidance, detection and UWB radar. © Copyright.

引用

页码：232 / 236

页数：4

共 8 条

[1]

Tu S., Jiao Y., Song Y., Zhang F., Zhang Z., Design of a band notched Vivaldi antenna for UWB applications, Chinese Journal of Radio Science, 25, 2, pp. 383-388, (2010)

[2]

Zhong S., Liang X., Yan X., UWB planar antenna technology, Chinese Journal of Radio Science, 22, 2, pp. 308-316, (2007)

[3]

Yao F., Zhong S., A new broadband slot antenna with a fan-shaped microstrip feed, Chinese Journal of Radio Science, 20, 5, pp. 675-677, (2005)

[4]

Bruns C., Leuchtmann P., Vahldieck R., Analysis and simulation of a 1-18 GHz broadband double-ridged horn antenna, IEEE Transactions on Electromagnetic Compatibility, 45, 1, pp. 55-60, (2003)

[5]

Qu S.W., Chan C.H., Xue Q., Ultrawideband composite cavity-backed rounded triangular bowtie antenna with stable patterns, Journal of Electromagnetic Wave and Applications, 23, 5-6, pp. 685-695, (2009)

[6]

Szmurlo T., Mayes P., MODIFIED log-periodic cavity-backed slot antenna, IEEE Transactions on Antennas and Propagation, 24, pp. 761-764, (1986)

[7]

Lu M., Michielssen E., Mayes P., Et al., A dual mode log-periodic cavity-backed slot array, IEEE Transaction on Antennas and Propagation, 1, pp. 124-127, (1999)

[8]

Ouyang J., Bo S., Zhang J., Et al., A low-profile unidirectional cavity-backed log-periodic slot antenna, Progress in Electromagnetic Research, 119, pp. 423-433, (2011)

← 1 →