This paper provides a summary of the results of an attempt at experimental verification of the propagation of electromagnetic surface waves at microwaves frequencies, in and along the uniform dielectric coating of a circular cylindrical metal pipe, based on the previously established theoretical investigation. These experimental results are of value for the diagnostic of anomalies on the surface of tar-coated pipes used in protecting the underground power transmission cables (feeder pipes). A test-bed was designed and implemented using an aluminum tubes (10” diameter) with an acrylic tube coating (0.25” thickness). Two identical wave launcher/receiver arrays, each of 32 elements around the tube for relatively uniform radiation/reception, were designed and fabricated at the frequency of interest (~6 GHz). This arrangement was put in a specially designed small anechoic chamber and attached to a network analyzer. A variety of tests were performed to establish the launch efficiency, prove surface wave propagation along, and reflection from different types of anomalies on the coating. In the paper, a number of test results and supporting graphs will be provided and future work for improving the performance of the launch array and the test-bed arrangement for better results will be outlined.
A Test-Bed Validation of Electromagnetic Surface Wave Propagation Along a Dielectric-Coated Metal Pipe
IEEE Aerospace Conference ; 2016 ; Big Sky, MT, United States
2016-03-05
Conference paper
No indication
English
Electromagnetic Wave Propagation in a Sinusoidally Modulated Dielectric Material
British Library Conference Proceedings | 2006
|Rigorous Analysis of Electromagnetic Wave Propagation in Cylindrical Dielectric Waveguide Array
British Library Online Contents | 2003
|British Library Online Contents | 2009
|Millimeter-wave propagation along railway lines
Tema Archive | 1983
|WING AIRFOIL STRUCTURE INCLUDING METAL-COATED FIBER TO ABSORB ELECTROMAGNETIC WAVE
European Patent Office | 2018
|