Design and tuning of wideband two-layer Substrate Integrated Waveguide directional couplers

Author

Toreinia, R. ; Safian, Reza

Author_Institution

Electr. & Comput. Eng. Dept., Isfahan Univ. of Technol., Isfahan, Iran

fYear

2012

Firstpage

70

Lastpage

74

Abstract

In this paper, design process of several 20dB wideband coupler on the basis of SIW using modeling the coupler by distributed low-pass filter prototypes and using chebyshev coefficients for these prototypes have been done. The base of work is the Bethe coupling theory for small apertures that has been expanded for large apertures. The type of apertures for our designs includes circular, rectangular and square. Also a Riblet-Saad coupler has been designed and simulated. We also introduced a new method to calibrate aperture dimensions to obtain our desired coupling. Finally, a comparison between different types of couplers has been done.

Keywords

Chebyshev approximation; calibration; directional couplers; low-pass filters; substrate integrated waveguides; tuning; Bethe coupling theory; Riblet-Saad coupler; SIW; aperture dimensions calibration; chebyshev coefficients; circular designs; distributed low-pass filter prototypes; rectangular designs; square designs; wideband two-layer substrate integrated waveguide directional couplers design; wideband two-layer substrate integrated waveguide directional couplers tuning; Apertures; Couplings; Directional couplers; Mathematical model; Simulation; Substrates; Riblet-Saad; Substrate Integrated Waveguide (SIW); coupler; coupling; large aperture; wide-band;

fLanguage

English

Publisher

ieee

Conference_Titel

Telecommunications (IST), 2012 Sixth International Symposium on

Conference_Location

Tehran

Print_ISBN

978-1-4673-2072-6

Type

conf

DOI

10.1109/ISTEL.2012.6482957

Filename

6482957