Arrays of Stub Loaded Inductive Strips

The transmission properties of multilayer arrays of resonant elements have been discussed in the open literature from time to time, often emphasising the improved passband edge ratios that can be obtained relative to those available from single layers. Passbands extending below 10 GHz often require conductor widths less than 0.2 mm. Still finer lines have increased mechanical stability problems. Munk et al. (1971) used inductive stubs to load the dipole elements. The paper summarises results from a study of strip arrays loaded periodically with stubs to further increase the equivalent inductance.