Search

In this work a numerical technique for an accurate modelling of the coupling among neighbouring bodies of revolution (BORs) is proposed. This problem is of high interest in modern applications, where clusters of feeds are being used more frequently in antenna systems to increase performances. The scattering problem, both for a stand-alone body of revolution (BoR) and for coupled BoRs, has been solved using the combined field integral equation (CFIE) approach and the method of moments (MoM), with an efficient set of expansion functions whose validity is limited to BoR. © 2003 Wiley Periodicals, Inc. Microwave Opt Technol Lett 37: 180–183, 2003; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.10861 [ABSTRACT FROM AUTHOR]

An analysis method of multiband coaxial waveguide horns has been developed. The method is based on a combination of the mode-matching (MM) method and an integral-equation (IE) method. MM is used to analyze the multiport internal region, where several concentric coaxial/circular waveguides are present for the different bandwidths. The IE is used for the external region, allowing an accurate analysis of the effect of the external feed shape. A comparison of the results obtained with some experimental data confirmed the accuracy of the method developed. © 2001 John Wiley & Sons, Inc. Microwave Opt Technol Lett 28: 369–373, 2001. [ABSTRACT FROM AUTHOR]

An efficient algorithm to analyze the six-port junction between a circular waveguide and four side-coupled rectangular waveguides is presented. The junction is a typical component in dual polarization corrugated horns mode launchers. The method is based on the generalized admittance matrix computation by algorithms specially tailored to obtain an efficient analysis on typical medium power workstations. © 1998 John Wiley & Sons, Inc. Microwave Opt Technol Lett 17: 337–339, 1998. [ABSTRACT FROM AUTHOR]