Cancellation of Reflections Due to Obstacles in an Ultra High Frequency Transmission Line

The theory of a new method of matching obstacle in ultra high frequency transmission lines, using the two wire transmission line analogy, is presented. The method is especially suited to the resonant cavity measurement technique, indicates a convenient form for tabulating data and reduces the matching conditions to their simplest form. The theory is extended to cover a frequency band rather than a single frequency and also to junctions between lines of different characteristic impedances. Experimental examples of each case are given as well as an example of the precision obtainable with the resonant cavity technique.