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Design of microwave direct-coupled cavity waveguide filter for VSAT communication at C-Band using MathCAD software

Esa, Mazlina and Sinnathamby, Rengiah and Mohd. Yusoff, Mohd. Fairus and Murad, Noor (2005) Design of microwave direct-coupled cavity waveguide filter for VSAT communication at C-Band using MathCAD software. In: RF and Microwave Conference, 2006. RFM 2006. International. IEEE, 116 -120. ISBN 0-7803-9745-2

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Official URL: http://dx.doi.org/10.1109/RFM.2006.331050

Abstract

Waveguides are robust structure and handle high power well, compared to transmission line filter such as coplanar lines, microstrips and striplines. As such, it is used in a very small aperture terminal (VSAT) communication system operating at C-band. In this paper, the mathematical computations for the design dimensions of a direct-coupled cavity waveguide bandpass filter are implemented using MathCAD mathematical software, based on the insertion loss method. Firstly, the design specifications are set. These include operating frequency, operating bandwidth, minimum attenuation, ultimate attenuation, and type of filter response. An optimum number of filter orders will be determined. The cavity waveguide filter consists of vertical inductive diaphragm of circular holes, which represent the cavity. Computation of the filter performances in terms of the insertion and return losses were successfully achieved. Comparisons with electromagnetic simulations were also made. Good correlation can be observed between the computed performances using MathCAD and simulated performances using simulation software.

Item Type:Book Section
Uncontrolled Keywords:C-band, MathCAD, VSAT, correlations, waveguide cavity filter
Subjects:T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions:Electrical Engineering
ID Code:25767
Deposited By: Liza Porijo
Deposited On:12 Jun 2012 04:29
Last Modified:25 Jun 2012 07:22

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