W-band microshield low-pass filters

Author

Robertson, S.V. ; Katehi, L.P.B. ; Rebeiz, G.M.

Author_Institution

NASA Center for Space Terahertz Technol., Michigan Univ., Ann Arbor, MI, USA

fYear

1994

fDate

23-27 May 1994

Firstpage

625

Abstract

Experimental and theoretical results are presented for a planar W-Band low-pass filter. A stepped impedance implementation of a 7-section 0.5 dB equal ripple Chebyshev filter achieves an insertion loss of 1 dB in the passband and a 90 GHz cutoff frequency. The filter is fabricated in microshield line technology, a new type of planar transmission line based on coplanar waveguide supported by a thin dielectric membrane. The inadequacy of conventional quasi-static models is discussed, and a Finite-Difference Time-Domain (FDTD) analysis is applied to predict the filter performance.<>

Keywords

MMIC; finite difference time-domain analysis; low-pass filters; microwave filters; 1 dB; 90 GHz; W-band; coplanar waveguide; cutoff frequency; equal ripple Chebyshev filter; filter performance; finite-difference time-domain analysis; insertion loss; microshield line technology; microshield low-pass filters; planar transmission line; quasi-static models; stepped impedance implementation; thin dielectric membrane; Chebyshev approximation; Coplanar waveguides; Cutoff frequency; Finite difference methods; Impedance; Insertion loss; Low pass filters; Passband; Planar transmission lines; Time domain analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest, 1994., IEEE MTT-S International

Conference_Location

San Diego, CA, USA

ISSN

0149-645X

Print_ISBN

0-7803-1778-5

Type

conf

DOI

10.1109/MWSYM.1994.335500

Filename

335500