Compact high power analog electrically controlled phase shifter
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United States of America Patent
Stats
-
Dec 23, 2003
Grant Date -
Dec 19, 2002
app pub date -
May 21, 2002
filing date -
Jun 14, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A high power ferrite microwave phase shifter that is both compact and low cost. The ferrite phase shifter includes a waveguide having a first cylinder and a second cylinder, the radius of the second cylinder being less than the radius of the first cylinder. The second cylinder is disposed within the first cylinder such that the two cylinders have a common axis of symmetry. The waveguide includes a first septum formed as a disk and disposed within the second cylinder. The disk has a pie-shaped aperture formed therethrough and is centrally disposed within the second cylinder so that the two cylinders and the disk share the same axis of symmetry. The second cylinder has an opening formed therethrough that is aligned with the pie-shaped aperture. The waveguide further includes a second septum that extends from the first cylinder to the disk center while bisecting the pie-shaped aperture, thereby separating an input from an output of the ferrite phase shifter. The waveguide is loaded with ferrite and a magnetic field is applied to the ferrite for controllably shifting the phase of signals propagating through the ferrite phase shifter device.
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