Accurate closed-form formulas for the electromagnetic parameters of 50 Ω micromachined microstrip directional couplers

Author

Benahmed, NasrEddine ; Bouhmidi, Rachid ; Bekri, Yamina ; Seghier, Salima ; Bendimerad, Fethi Tarik ; Benabdallah, Nadia

Author_Institution

Dept. of Telecommun., Univ. Abou Bekr Belkaid-Tlemcen, Tlemcen, Algeria

fYear

2012

fDate

20-23 March 2012

Firstpage

1

Lastpage

4

Abstract

This article presents analytical expressions for the electromagnetic parameters (even- and odd-mode characteristic impedances (Z_0e, Z_0o) and coupling coefficient k) of micromachined microstrip directional couplers (MMC) at characteristic impedance of 50 Ω. The analytical expressions can be deduced from rigorous analyses using method of moments (MoM) analysis and curve-fitting techniques. An analysis can be readily implemented in modern CAE software tools for the design of microwave and wireless components. This study presents accurate and suitable general expressions for all 50 Ω micromachined microstrip directional coupler having a coupling coefficient between 5 and 50 dB. A micromachined directional coupler operating at 60 GHz will be designed to demonstrate the usefulness of these design equations.

Keywords

curve fitting; directional couplers; method of moments; micromachining; microstrip couplers; millimetre wave couplers; CAE software tools; MMC; MoM analysis; closed-form formulas; coupling coefficient; curve-fitting techniques; electromagnetic parameters; even-mode characteristic impedances; frequency 60 fHz; method of moments; micromachined microstrip directional couplers; odd-mode characteristic impedances; resistance 50 ohm; Couplings; Directional couplers; Impedance; Microstrip; Microwave theory and techniques; Silicon; 50 Ω Micromachined microstrip directional coupler; MoM results; analytical expressions; coupling coefficient; even- and odd-mode characteristic impedances;

fLanguage

English

Publisher

ieee

Conference_Titel

Systems, Signals and Devices (SSD), 2012 9th International Multi-Conference on

Conference_Location

Chemnitz

Print_ISBN

978-1-4673-1590-6

Electronic_ISBN

978-1-4673-1589-0

Type

conf

DOI

10.1109/SSD.2012.6197963

Filename

6197963