Results 251 to 260 of about 90,040 (285)

Generalised nonlinear theory for one-port microwave active circuits

IEE Proceedings H Microwaves, Antennas and Propagation, 1987
A nonlinear model characterising two-terminal microwave active circuits under dynamic and steady-state conditions is developed from a generalised circuit approach. The model considers the active circuit as a black box consisting of a one-port passive circuit and a one-port active device. The response of the active and passive circuits to modulated time-
N.A. Mansour, W.R. Tinga
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Hybrid frequency/time domain field theory based CAD of microwave circuits

23rd European Microwave Conference, 1993, 1993
In this paper we report the first successful combination of a frequency domain CAD program, namely OSA90/hopeTM, with a time domain TLM electromagnetic field simulator running on various hardware platforms. The technique allows optimization of microwave structures using time domain field analysis without the need for equivalent circuits or lookup ...
P.P.M. So, W.J.R. Hoefer, J.W. Bandler, R.M. Biernacki, S.H. Chen   +4 more
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The Application of the Theory of Equivalent Circuits to the Computer-Aided Design of Microwave Circuits

1971 IEEE GMTT International Microwave Symposium Digest, 1971
The field of equivalent circuit generation is examined in relation to microwave circuits. A method useful for microwave circuit design is explained. The method can be regarded as optimization with inequality constraints, but has the advantage of being linear, thus efficient and easy to obtain linear programming routines can be used to do the design by ...
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Diakoptic theory and the complex images for microwave integrated circuits

1992 Symposium on Antenna Technology and Applied Electromagnetics, 1992
This paper presents an approach for rapid computation of microwave integrated circuit. The scheme includes the integral equation, a rapidly convergent Green's function by complex images, a multi-pipe method for large segments, and the diakoptic moment method.
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Foundations of microwave circuit theory

1992
As noted in Chapter 1, the low-frequency or 'conventional' circuit theory is ordinarily the best model when the wavelength is large in relation to the dimensions of the system components. With increasing frequency and decreasing wavelength, however, the ability of the circuit model to explain the observed behaviour is no longer adequate for many ...
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Microwave Circuit Theory-Based Models for Predicting the Resonant Frequencies of a Class of Ring Resonators

MELECON 2006 - 2006 IEEE Mediterranean Electrotechnical Conference, 2006
The concept of ring-resonance of a symmetric two-port network is used to determine the resonant frequencies of a variety of ring resonators, on the basis of simple equivalent circuits. Several illustrative structures, including the Pendry-type microstrip resonator, have been analysed and measured.
J.E. Page, J. Esteban, C. Camacho-Penalosa   +2 more
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An improved FDTD formulation for general linear lumped microwave circuits based on matrix theory

IEEE Transactions on Microwave Theory and Techniques, 2005
An improved finite-difference time-domain (FDTD) formulation using the matrix theory is presented to analyze hybrid general linear lumped and distribution microwave circuits. Traditionally, since discrete current expressions of lumped circuits should be substituted into Maxwell's equations explicitly, the different discrete formulations of Maxwell's ...
null Zhenhai Shao, M. Fujise
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Modeling of a waveguide microwave pulse compression system using transmission line theory and equivalent circuits

2015 IEEE International Conference on Plasma Sciences (ICOPS), 2015
SAVELEC (SAfe control of non cooperative Vehicles through ELECtromagnetic means) is a project funded within the 7th Framework Program of the European Commission that aims at slowing down and possibly stopping a vehicle by interfering with some of its key Electronic Units (EUs), yet without any consequences on the passengers or any irreversible damage ...
S. P. Savaidis, S. A. Mitilineos, N. A. Stathopoulos, Z. C. Ioannidis   +3 more
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Microwave circuit theory-based models to predict the resonant frequencies of a wide range of ring resonators

AEU - International Journal of Electronics and Communications, 2009
Abstract The concept of the ring resonance of a symmetric two-port network is used to determine the resonant frequencies of a variety of ring resonators, on the basis of simple transmission-line or coupled-transmission-line equivalent circuits. Several illustrative structures, from the closed ring microstrip to the Pendry-type split-ring slotline ...
Juan E. Page, Jaime Esteban, Carlos Camacho-Peñalosa   +2 more
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From Kirchoff to Lorentz modifying-circuit theory for microwave and mm-wave structures

25th International Conference on Infrared and Millimeter Waves (Cat. No.00EX442), 2002
Microwave and mm-wave designs require circuit parameters, which are applicable at high frequencies, where the conventional transmission line theory has failed to provide correct results. The traditional remedy is to add spurious capacitors and inductors at vulnerable locations, such as line discontinuities and terminations.
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