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Approximate synthesis formulas for microstrip line with aperture in ground plane

Packiaraj, D and Vinoy, KJ and Kalghatgi, AT (2012) Approximate synthesis formulas for microstrip line with aperture in ground plane. In: International Journal of RF and Microwave Computer-Aided Engineering, 22 (1, SI). pp. 124-130.

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Official URL: http://onlinelibrary.wiley.com/doi/10.1002/mmce.20...

Abstract

Approximate closed-form expressions for the propagation characteristics of a microstrip line with a symmetrical aperture in its ground plane are reported in this article. Well-known expressions for the characteristic impedance of a regular microstrip line have been modified to incorporate the effect of this aperture. The accuracy of these expressions for various values of substrate thickness, permittivity and line width has been studied in detail by fullwave simulations. This has been further verified by measurements. These expressions are easier to compute and find immense use in the design of broadband filters, tight couplers, power dividers, transformers, delay lines, and matching circuits. A broadband filter with aperture in ground plane is demonstrated in this article. (c) 2011 Wiley Periodicals, Inc. Int J RF and Microwave CAE, 2012.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to John Wiley and Sons.
Keywords: microstrip line;defected ground;characteristic impedance; effective perimittivity;approximate expressions
Department/Centre: Division of Electrical Sciences > Electrical Communication Engineering
Date Deposited: 03 Feb 2012 12:18
Last Modified: 03 Feb 2012 12:18
URI: http://eprints.iisc.ernet.in/id/eprint/43390

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