A rectangular cavity-backed cross-loop slot antenna

Author

Takahashi, Takumi ; Kotani, Toshihiro ; Hirasawa, Kazuhiro ; Shi, Song

Author_Institution

Inst. of Inf. Sci. & Electron., Tsukuba Univ., Ibaraki, Japan

Volume

2

fYear

2002

fDate

2002

Firstpage

448

Abstract

For the application of antennas on high speed moving objects, such as space shuttles, airplanes and bullet trains, low-profile and flat-structured planar antennas are the most eligible. A slot antenna is one of the major interests because of its flush mounting and simple structure. We previously reported that a rectangular cavity-backed slot antenna with parasitic slots has a VSWR bandwidth of 10.6% (see Kotani, T. et al., IEEE AP-S Int. Symp. on Antennas and Propagat., July 2001). A rectangular cavity-backed cross-loop slot antenna, whose cavity size is the same as in the previous report, is proposed and the characteristics are investigated. The method of moments (MoM) is used to calculate the antenna characteristics (see Shi, S. et al., IEEE Trans. Antennas and Propagat., vol.49, p.1517-24, 2001). By introducing a short point on the slot and choosing its proper position, the VSWR bandwidth is increased from 5.2% to 17.2%.

Keywords

antenna radiation patterns; conformal antennas; loop antennas; method of moments; mobile antennas; slot antennas; MoM; VSWR bandwidth; antenna characteristics; cavity-backed antenna; cross-loop antenna; flush mounting; high speed moving objects; method of moments; parasitic slots; radiation patterns; rectangular antenna; slot antenna; Airplanes; Antennas and propagation; Bandwidth; Coaxial cables; Conductors; Frequency; Impedance; Planar arrays; Slot antennas; Space shuttles;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 2002. IEEE

Print_ISBN

0-7803-7330-8

Type

conf

DOI

10.1109/APS.2002.1016119

Filename

1016119