Patent · US Expired

Continuously tunable waveguide attenuator

US6985047B2 · kind B2 · utility

5Cited by
8References
32Claims
0Family size

Assignee

Inventors

Key dates

Filing dateApr 16, 2003
Grant dateJan 10, 2006
Priority date
Expiry dateApr 16, 2023

Classification

  • Technology area (CPC H)Electricity
  • CPC primaryH01P1/222
  • WIPO fieldTelecommunications
  • WIPO sectorElectrical engineering

Abstract

A continuously variable waveguide attenuator (100). The continuously variable waveguide attenuator includes at least one waveguide attenuator cavity (109) having at least one barrier. A fluid dielectric (108) having a loss tangent, a permittivity and a permeability is at least partially disposed within the waveguide attenuator cavity (109). At least one composition processor (101 ) is included and adapted for dynamically changing a composition of the fluid dielectric (108) to vary an electrical characteristic of the fluid dielectric. A controller (136) is provided for controlling the composition processor (101 ) to selectively vary the electrical characteristic in response to a waveguide attenuator control signal (137).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.