Summary
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Inclined Slot Array Antennas on a Hollow Rectangular Coaxial Line Satoshi YAMAGUCHI Yukihiro TAHARA Toru TAKAHASHI Kazushi NISHIZAWA Hiroaki MIYASHITA Yoshihiko KONISHI Publication IEICE TRANSACTIONS on Communications Vol.E95-B No.9 pp.2870-2877 Publication Date: 2012/09/01 Online ISSN: 1745-1345 DOI: 10.1587/transcom.E95.B.2870 Print ISSN: 0916-8516 Type of Manuscript: PAPER Category: Antennas and Propagation Keyword: rectangular coaxial line, waveguide, slot array antenna, inclined linear polarization, Full Text: PDF(2.7MB)>>
Summary: Slotted-waveguide array antennas are attractive because of their low-loss characteristics at high frequencies. Several types of slotted arrays whose polarization angles are inclined to the waveguide axis have been reported. In this paper, we propose a new type of slot array antenna on a rectangular coaxial line for minimizing the waveguide width. As opposed to a conventional waveguide, there is no “cut-off” concept in our proposal because the coaxial line is a transverse electromagnetic (TEM) line. Therefore it is possible to guide the wave even if the diameter of the line is much smaller than that of the waveguide. Moreover, the proposed antenna is a resonant slot array antenna that is based on standing-wave excitation and is thus different from traveling-wave antennas (such as a leaky coaxial cable (LCX)). | |||||
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