Nelson, Alex2018-07-262018-07-262018-04https://hdl.handle.net/11299/198354University of Minnesota M.S.E.E. thesis.April 2018. Major: Electrical/Computer Engineering. Advisor: Rhonda Franklin. 1 computer file (PDF); vii, 69 pages.This thesis discusses the interaction of magnetic materials and high frequency signals inside of microstrip transmission line circuits. This work is based on microstrip circuit designs that use magnetic materials for either the ground plane and/or as an insert inside the microstrip substrate. The microstrip circuits with inserts are characterized with AC and DC magnetic fields. The magnetic materials are bulk metals. The magnetic materials inserted into the circuit change how the circuit reacts to DC magnetic fields. When a DC magnetic field is applied the transmission of the magnetic materials shifts at each frequency.enbulkFMRmagnetic fieldmicrostripVNAThesis or Dissertation