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A simple measurement method for the balanced and unbalanced modal power ratios of a small antenna is proposed. Because the conductance corresponding to each mode can be calculated by applying the S-parameter method to the power dissipated at the antenna, the modal power ratio can be obtained by measuring only the 2-port S-parameters. In this paper, we demonstrate a simulation for the analysis of the...
In this work we propose that the dipole antenna can be fed directly through the coaxial cable, without any balun, when used with a perfect electric conductor (PEC) reflector placed at quarter wavelength distance. This configuration leads to a high impedance between the coaxial cable outer metal shield at the dipole feed point and the ground plane which restricts the current to flow on the outer metal...
Having not been examined the busbar sufficiently until now as a communication channel in the narrowband PLC communication increases the importance of this issue twice as much. Therefore, as a PLC communication channel, the channel characteristics of the busbar should be determined. The aim of this study is to investigate the characteristics of the busbar for the narrowband PLC applications. This study...
In this paper, the transient analysis of lossy and dispersive multiconductor transmission lines is considered. The existing Green's function-based method is extended to explicitly include delays extraction, thus leading to a significant compressed time-domain state-space model. The proposed method is mainly based on poles and residues asymptotic analysis and lossless delays extraction. The resulting...
A simple method for designing and determining the impedance taper of a smooth conical to coaxial transmission line transition is presented. This type of transition is often used in conical line combiners and traditionally has a constant impedance. The presented method allows the conical and coaxial lines to be designed with different impedances and the transition to act as an impedance taper. A conical...
This paper describes the results of calculating and measuring deviations of conducted disturbance voltages caused by differences in the arrangement of an artificial mains network (AMN) used to measure the voltage, for example, the height of the (AMN) from a horizontal reference ground plane and the connection between the AMN and the ground plane. The results indicated that the conducted disturbance...
A simple equivalent circuit model with empirical equations describing the peripheral feeding ports of conical-line power combiners is presented. The model allows the entire structure to be designed using transverse electromagnetic circuit theory without the need for any full-wave simulations. A summary of the model extraction process is given and the accuracy of the proposed model is confirmed by...
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