An experimental course in electromagnetic theory has been developed in which the student version of PSPICE can be used to illustrate a large class of theoretical principles. The course material is based on the argument that many interesting problems in electrodynamics can be addressed using TEM waves normally incident on a dielectric or reflecting interface. The relationship between a normally ...

In this paper, we study transmission line resonances in high TC dc SQUIDs. These resonances are exhibited in the characteristics of SQUIDs which are fabricated on substrates with high dielectric constant, such as strontium titanate. The power balance equation is analytically derived both for symmetric and asymmetric SQUIDs. Using this, we investigate SQUID current voltage I(V ), voltage flux V ...

Current and voltage transformers influence the criterion values measurement particularly during disturbances in the system. Certain construction limitations of instrument transformers may in some cases cause maloperation or substantial delay in tripping of the protective relays. Current transformer saturation and discharging of the capacitive voltage transformer’s internal energy during short c...

In this paper, the transmission line theory is utilized to characterize the metamaterials comprising of microscopic elements of a periodic array, specifically, the traditional split-ring resonators (SRRs), as an example. The bianisotropic property of the metamaterials is characterized in a new way different from the existing wave methods. As evident from both simulations and experiments, the SR...

We study noise and noise energy of a high-Tc dc SQUID fabricated on a high-ǫR substrate whose conduction properties are given by transmission line physics. We show that transmission line resonances greatly enhance the noise. Remarkably, resistance asymmetry enhances these resonances even more. However, as the transfer function (dc dφ ) scales the same way, the noise energy is reduced by asymmet...

Introduction. The Butler matrix transforms the N channels of a phased array into a new set of so-called eigenmodes with useful properties for both reception [1] and transmission [2]. In the current work, we performed simulations of an eight-channel phased array based on microstrip transmission line (MTL) elements [3-4] and driven in an eigenmode configuration to investigate the effects of error...

An accurate and efficient modelling approach for field effect transistors (FET) as nonlinear active transmission lines is presented. The nonlinear active multiconductor transmission line (NAMTL) equations are obtained by considering the transistor as three active coupled lines operating in a nonlinear regime. This modelling procedure accurately spots the effect of wave propagation along the dev...

A direct transmission line model of noise in 1D electromagnetic media is presented, and used to find the emittance and noise factor of a negative index metamaterial based on resonators and rods. The results highlight the poor noise performance of negative index materials based on low-Q magnetic resonators.

This paper studies the effect of various mitigation loop configurations namely: single horizontal mitigation loop (two conductors), two separate horizontal mitigation loops (four conductors) and single vertical mitigation loop (two conductors), on the magnetic field produced by 220 kV double-circuit overhead transmission line. Also, in this paper a further reduction in the magnetic field is ach...