A Design of Coaxial-to-Redial Line Adaptors in Radial Line Slot Antennas

Makoto NATORI  Makoto ANDO  Naohisa GOTO  

IEICE TRANSACTIONS (1976-1990)   Vol.E73   No.11   pp.1874-1879
Publication Date: 1990/11/25
Online ISSN: 
Print ISSN: 0000-0000
Type of Manuscript: PAPER
Category: Antennas and Propagation

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A numerical design of a coaxial-to-radial line adaptor is presented for the use as a feed in a radial line slot antenna. To realize stable performances in mass production, the reflection from a probe type adaptor in which only the outer conductor of a coaxial line is in contact with the waveguide, is analyzed and suppressed. The tolerance for the change and the errors in the height of the waveguide as well as the bandwidth is highlighted; the advantages of the conical probe over the conventional shorting post and the coax-gap adaptor are emphasized.