Electromagnetic fields of a dielectric coated coaxial cable with an interrupted shield--Quasi-static approach

Another approach to the boundary-value problem is considered. Previously the internal and external fields were matched, in an average sense, across the gap. Here a quasi-static analysis is employed that does not require an assumption about the field distribution in the gap. However, the method appears to be useful only for small gaps. Using either method, it is shown that typically 15 percent of the incident power in the cable is converted to external radiation and typically 20 percent is transferred into surface waves in the dielectric jacket.