Theory and modeling of bandpass filters in waveguide using thin ferrite layers

Journal Article

This work examines the use of thin ferrite layers to form circuit components in a waveguide. The planar layers are positioned perpendicular to the waveguide axis. A unique lumped-element circuit model for a thin layer is developed, and practical limitations on operating frequency ranges are outlined. The circuit model is used to design bandpass filters in a waveguide with prescribed frequency responses. These waveguide filters are useful in applications where capacitive posts or inductive diaphragms are infeasible. EEsof© simulations of a filter are presented, and directions for further investigation are discussed. © 1998 John Wiley & Sons, Inc.

Duke Authors

Cited Authors

  • Bernhard, JT; Joines, WT

Published Date

  • January 1, 1998

Published In

  • Microwave and Optical Technology Letters

Volume / Issue

  • 18 / 2

Start / End Page

  • 117 - 120