Design of a Hybrid Directional Coupler in Empty Substrate Integrated Waveguide (ESIW)

Author

Fernandez, Marcos D. ; Ballesteros, Jose A. ; Belenguer, Angel

Author_Institution

Dept. de Ing. Electr., Electron., Autom. y Comun., Univ. de Castilla-La Mancha, Cuenca, Spain

Volume

25

Issue

12

fYear

2015

Firstpage

796

Lastpage

798

Abstract

This letter shows the procedure of design of a hybrid directional coupler based on Empty Substrate Integrated Waveguide (ESIW). Once proved in previous works the feasibility of ESIW and the good performance indexes this technology can achieve, the following step is designing useful devices to be integrated in planar circuits. The proposed hybrid coupler, which is the first ESIW 4-port available circuit, is designed at 15 GHz with 3 dB coupling factor and a minimum of 20 dB of isolation over 30% bandwidth. After manufacturing the circuit, simulated and measured results are presented and discussed.

Keywords

directional couplers; planar waveguides; substrate integrated waveguides; ESIW; empty substrate integrated waveguide; frequency 15 GHz; hybrid directional coupler; planar circuits; Couplers; Directional couplers; Iris; Microwave circuits; Millimeter wave devices; Empty substrate integrated waveguide (ESIW); hybrid directional coupler; millimeter-wave devices;

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/LMWC.2015.2496803

Filename

7327241