Title :
Compact polarisation selectable radial cavity antenna
Author :
Subbarao, B. ; Fusco, V.F.
Author_Institution :
Sch. of Electr. & Electron. Eng., Queen´´s Univ., Belfast, UK
fDate :
6/9/2005 12:00:00 AM
Abstract :
The generation of both hands of circular (CP) in addition to vertical and horizontal linear (LP) polarisation from a 6.5 mm-deep radial cavity antenna is demonstrated in the frequency range 8.1-8.6 GHz by incorporating a compact four port coaxially fed polariser, thus removing the need for an orthomode transducer. The polariser is realised using metal post inserts positioned inside a circular waveguide; its length is 59 mm.
Keywords :
circular waveguides; electromagnetic wave polarisation; microwave antenna arrays; slot antenna arrays; 8.1 to 8.6 GHz; circular polarisation; circular waveguide; four port coaxially fed polariser; horizontal linear polarisation; metal post inserts; orthomode transducer; radial cavity antenna; radial line crossed slot array; vertical linear polarisation;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20051276
