Aids in the design of microstrip components I: Getsinger's chart

Prasad, Sheila and Shivashankaran, BS and Jain, PK (1975) Aids in the design of microstrip components I: Getsinger's chart. In: IEE-IERE Proceedings - India, 13 (6). pp. 210-217.

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Abstract

Charts relating the capacitance to the width, spacing, thickness and height above the ground plane of coupled microstrips have been obtained. These are used to design hairpin line and hybrid hairpin line filters as well as multiplexers using microstrip comb line filters. The experimental results agree reasonably well with the design specifications. Getsinger's original charts for parallel coupled bars between parallel plates have been formulated for the microstrip case. Corresponding charts relating the capacitances to the width, spacing, thickness and height above the ground plane of coupled microstrips have been obtained. Examples of the use of these charts are shown in the design of hairpin lines and hybrid hairpin line filters as well as multiplexers using comb line filters. The hairpin line/hybrid hairpin line filters were designed to operate at a central frequency of 9÷5 GHz with 11 per cent bandwidth and 0÷5 dB ripple. The three filters constituting the comb line filters have center frequencies of 2÷4, 3÷0 and 3÷6 GHz. The components so designed were fabricated and tested. The dielectric used for the microstrip was teflon. Experimental curves for the attenuation (insertion loss) and VSWR are given. The design specifications arc satisfied quite well.

Item Type:	Journal Article
Publication:	IEE-IERE Proceedings - India
Publisher:	IEEE
Additional Information:	Copyright 1975 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Department/Centre:	Division of Biological Sciences > Biochemistry
Date Deposited:	23 Feb 2012 10:14
Last Modified:	06 Nov 2018 07:31
URI:	http://eprints.iisc.ac.in/id/eprint/43114

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