These equations are fundamental to transmission line theory. This is intended to prevent signals from reflecting off the end of the transmission line. MasTec installed 962 miles of transmission line. Campbell's filter was a ladder network based on transmission line theory. The radiation mechanism arises from discontinuities at each truncated edge of the microstrip transmission line. This can create standing waves on the transmission line. This cone acts like a tapered transmission line transformer. In transmission line faults, roughly 5% are symmetric. Stripline is the earliest form of planar transmission line. However, an alternative is distributed-element circuits, built from pieces of transmission line. Electricity from Kemano is transported across mountains via a custom built twin circuit transmission line. Stubs can be used to match a load impedance to the transmission line characteristic impedance. An overhead power line is one example of a transmission line. The earliest transmission line power dividers were simple T-junctions. Telephone transmission line length and loop distances are measured in kilofeet.