Title :
Matching evanescent open-ended waveguide antennas using the Imaginary Smith Chart
Author :
Ludlow, Peter ; Fusco, Vincent
Author_Institution :
Inst. of Electron., Commun. & Inf. Technol., Queen´´s Univ. Belfast, Belfast, UK
Abstract :
In this paper we propose a means by which the Imaginary Smith Chart may be used to simplify the design of evanescent open-ended waveguide antennas. WR90 waveguide (which has a cutoff frequency of 6.56GHz) was used in the design process. An open-ended waveguide antenna design is presented that operates at 4.5GHz with a bandwidth of 3.2% for return loss <;-10dB and a maximum realised gain of 3.71dBi.
Keywords :
waveguide antennas; WR90 waveguide; design process; evanescent open-ended waveguide antenna matching; frequency 4.5 GHz; frequency 6.56 GHz; gain 3.71 dB; imaginary Smith chart; Admittance; Apertures; Electromagnetic waveguides; Impedance; Microwave filters; Probes;
Conference_Titel :
Antennas and Propagation (EUCAP), Proceedings of the 5th European Conference on
Conference_Location :
Rome
Print_ISBN :
978-1-4577-0250-1
