Computer-Aided Design of Millimeter Wave E-Plane Filters.

Shih, Yi-Chi; Itoh, T.

doi:10.21236/ada141016

Cited by 5 publications

(6 citation statements)

References 7 publications

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“…(7) Method of lines [14] In this method, two of the three dimensions are discretized for numerical processing while the analytical expressions are sought in the remaining dimension., (8) Generalized S matrix method [15,16] Although this has been developed for analyzing complicated discontinuity problems, it can be used for characterization of cascaded discontinuities often seen in a passive components such as the E-plane filter. The generalized S matrix combines the mutual interactions of two discontinluities via the dominant and higher order modes.…”

Section: Survey Of Numerical Methodsmentioning

confidence: 99%

An Overview on Numerical Techniques for Modeling 3-Dimensional Passive Components

Itoh

1985

15th European Microwave Conference, 1985

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A number of numerical techniques are described for the analysls of passive components. Fundamental concepts and typical applications are presented and discussed . A list of references is included for representative works reported in literature. INTRODUCTI ONAlthough numerical and analytical, if possible, characterizations and modelings of miniaturized passive components have been exercised by a large number of researchers and engineers for some time; the necessity of such activities are increasingly important in recent years. This is in line with increased research and development in the millimeter-wave circuits and the monolithic integrated circuits. It is no longer economical or, in many cases not even feasible, to tune the circuits once they are built. Therefore, extremely accurate characterization methods are needed to model the structures.Since most structures used in today's printed and planar integrated circuits are not amenable to closed form analytical expressions, the numerical methods needed for characterizations are in fact a necessary evil. The circuit designers would like to use CIO packages which in most cases consist of curve-fitting or empirical formulas. However, these formulas must be backed up by accurate characterizations. In addition, any numerical methods for characterizations need to be as efficient as possible both in CPU time and temporary storage requirement, although recent rapid advances in computers impose less severe restrictions on the efficiency of the method. AMother effort in the development of numerical methods has been the versatility of the method. In reality, however, choice of the numerical methods is the product of trade-off between accuracy, speed, storage requirement, versatility, etc. and is quite structure dependent.Since the advent of microwave integrated circuits, a number of methods have been invented in addition to the somewhat more classical methods refined for these modern structures. SURVEY OF NUMERICAL METHODSWhen a specific structure is analyzed, one has to make a choice of the method best suited for the structure. Obviously, the choice is not unique. Therefore, the user must make a critical assessment for each candidate method. In this paper, we list a number of numerical methods and present geherally accepted appraisals for these methods. It is not possible to make an exhaustive list of all available methods. Rather, most representative ones are reviewed. Although the assessment will be aimed at the characterization of passive components, 3-dimensional structures, many methods are also effective for 2-dimensional problems. Fur-1059 ther, 2-dimensional methods can be used in an integral part of the composite characterization program.(1) Finite difference method [I] This method is well known to be the least analytical. The mathematical preprocessing is minimal and the method can be applied to a wide range of structures. Certain precalutions have to be taken into account when the method is used for an open region problem.(2) Finite element method [2][3][4][5...

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Section: Survey Of Numerical Methodsmentioning

confidence: 99%

An Overview on Numerical Techniques for Modeling 3-Dimensional Passive Components

Itoh

1985

15th European Microwave Conference, 1985

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“…The total transverse fields are the superposition of the incident waves and reflected waves; thus, we may invoke the orthonormal modes of the rectangular waveguide as shown in (1) and (2) to approximate the total transverse electrical and magnetic fields at the two reference planes [39]- [41]. A similar technique using the total field expansion method to express the equivalent source at two reference planes was reported in [40] in formulating the GSM space-domain integral equation. At the two reference planes, we express the total electric field and total magnetic field as…”

Section: A Model and The Hybrid Gsm/fem Formulationmentioning

confidence: 99%

Anomalous Dispersion Characteristics of Periodic Substrate Integrated Waveguides From Microwave to Terahertz

Tzuang

2015

IEEE Trans. Microwave Theory Techn.

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This paper presents the anomalous dispersion characteristic of a periodic substrate integrated waveguide (SIW) with results obtained by a rigorous formulation using the hybrid generalized scattering matrix (GSM) and finite-element method (FEM), showing two types of anomalous modal behaviors, namely: 1) surface wave leakage in connection to the near cutoff transverse resonance of a rectangular waveguide section alternating with either microstrip or parallel sections and 2) complex modes inside the lowest -like propagating zone. A rigorous limiting case study of the SIW via spacing approaching less than 10% of via diameter validated the proposed hybrid GSM/FEM formulation and enabled the detailed description of various types of modes, namely, propagating -like, a pair of complex modes, and above the stopband regimes, respectively. Convergence analysis and comparisons to the existing literature were carried out to validate the proposed method in addition to the limiting case study. Measured results of the CMOS prototypes validate the theoretical prediction from 325 to 450 GHz and confirm the accuracy of the proposed method.

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“…Early post-docs included Lorenz Peter Schmidt (University of Erlangen), Kiyomichi Araki (Tokyo Institute of Technology) and Ikuo Awai (Yamaguchi University). By 1981 he had risen to full Professor and in 1982 he graduated his first Ph.D. student, Yi-Chi Shih [62], who later founded MMCOMM (now part of Honeywell International) and who is now trying to start a GaN foundry in China. Itoh received a chaired position at Austin in 1983.…”

Section: Tatsuo Itohmentioning

confidence: 99%

Terahertz Pioneer: Tatsuo Itoh “Transmission Lines and Antennas: Left and Right”

Siegel

2014

IEEE Trans. THz Sci. Technol.

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Computer-Aided Design of Millimeter Wave E-Plane Filters.

Cited by 5 publications

References 7 publications

An Overview on Numerical Techniques for Modeling 3-Dimensional Passive Components

An Overview on Numerical Techniques for Modeling 3-Dimensional Passive Components

Anomalous Dispersion Characteristics of Periodic Substrate Integrated Waveguides From Microwave to Terahertz

Terahertz Pioneer: Tatsuo Itoh “Transmission Lines and Antennas: Left and Right”

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