3-D ELECTROMAGNETIC FIELD SIMULATOR BASED DESIGN OF MULTILAYER MICROWAVE FILTERS
Date
2001
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ORCID
Type
Degree Level
Masters
Abstract
Over the past decade, the explosive growth in wireless and mobile communication systems has generated a significant market for lightweight, ultra small filters that are amenable to mass manufacture without tuning. In this thesis, an inductively coupled multilayer resonator structure using lumped elements is proposed and applied to the design of bandpass filters using low-temperature cofired ceramic (LTCC). The design is based on the M.Dishal's method with a modern electromagnetic (EM) field simulator, which employs full-wave spectral domain Galerkin method of moments. The design procedure is described and design examples are given to demonstrate the features of the proposed coupling structure. A. Morini's method is then used to successfully design a multilayer diplexer that is extremely useful in wireless communication application. A two-pole LTCC multilayer filter is simulated and successfully built. Good experimental result is obtained. This is the first time that design curves are presented for inductively coupled multilayer ceramic (MLC) filters. This thesis also demonstrates the generality of the method for the design of multilayer bandpass filters and diplexers.
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Degree
Master of Science (M.Sc.)
Department
Electrical Engineering