A Method for Increasing Electrical Length of Microstrip Waveguides

Rock Hadley¹, Dennis Parker¹, Glen Morrell¹

A method for increasing the electrical length of non-resonant microstrip waveguides is presented. This method uses lumped element distributed capacitance evenly distributed along the length of a microstrip transmission line to effectively increase the phase shift down the length of the line. This work presents an analysis of the field properties of a single microstrip line that uses this technique to increase the electrical length of the line. This work is a step towards the development of linear phase volume coils that could be used at 3T frequencies.