Patent ID: 11923589
Assignee: BENCHMARK ELECTRONICS, INC.
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A Suspended Substrate Stripline (SSS) filter comprising:
a substrate having metal layers formed on a top surface and a bottom surface thereof;
a filter circuit formed on a non-metalized area and positioned between a pair of the metal layers on the top surface of the substrate;
a top ground plate having a first air cavity formed on a bottom surface of the top ground plate, wherein the first air cavity on the top ground plate is positioned directly above the filter circuit when the top ground plate is positioned on the top surface of the substrate;
a bottom ground plate having second air cavity formed on a top surface of the bottom ground plate, wherein the second air cavity on the bottom ground plate is positioned directly below the filter circuit when the bottom ground plate is positioned on the bottom surface of the substrate; and
a Substrate Integrated Waveguide (SIW) cavity resonator coupled to the filter circuit to create a notch response in the SSS filter.