We propose a new setup to measure an electrical field in one direction. This setup is made of a piezoelectric sintered PZT film and an optical interferometric probe. We used this setup to investigate how the shape of the extremity of a coaxial cable influences the longitudinal electrical near-field generated by it. For this application, we designed our setup to have a spatial resolution of 100 ...

This paper describes a methodology for use in dimensioning the power requirements for provision of telephony over coaxial cable networks. A model describing the distributed power system elements in a coax network is presented. Guidelines are given for cost optimisation of the coax power network. An example of dimensioning the power for telephony on a typical coax network for a given grade-of-se...

But first concerning controversies there is also a controversy concerning the use or non-use of baluns, and which balun to use. Since many antenna types are balanced, and present day HFTPA’s are unbalanced, and, since the preferred method of feeding antennas is to use coaxial cable, rather than 2-conductor balanced transmission line, a balun should, often must be used in the overall antenna sys...

In the field of high-voltage transmission and distribution, secondary equipments are influenced by electromagnetic coupling effect generated primary circuit, which causes strong interference to signal cable. this paper, an equivalent circuit model is established for cables in different forms, namely conventional cable, coaxial cable twisted pair based on line theory. Based model, responses thes...