Thermally compensated microwave resonator
AssigneeHughes Aircraft Company
InventorsRichard V. Basil, Jr., Leons Ondrups, James K. Shimizu
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Abstract
Thermal compensation for frequency control of microwave resonators through utilization of bimetallic boundary motion type phenomena is described, the resonator being rectangular and preferably having composite broad walls of integral layers, one of which having a relatively lower thermal expansion coefficient than another of the layers and each having an initial deformation in a stabilized curvature condition to render these walls frequency sensitive.
Claims23
A thermally compensated frequency controlled microwave resonator for operation over a predetermined operational temperature range, comprising:
- a rectangular resonator having conductive inner wall surfaces and oppositely disposed broad and narrow walls, at least one of said broad walls being a composite wall of integral wall layers one of which having a relatively lower thermal expansion coefficient than another of said layers, said composite wall deforming with changes in temperature and having a critical temperature whereat said composite wall snaps from one stabilized curvature condition to a different stabilized curvature condition, said critical temperature being outside said operational temperature range, said composite wall having an initial deformation in one of said stabilized curvature conditions to render said composite wall frequency sensitive.
A thermally compensated frequency controlled microwave resonator for operation over a predetermined operational temperature range, comprising:
- a rectangular resonator having conductive inner wall surfaces and oppositely disposed broad and narrow walls, at least one of said walls being a composite wall of integral wall layers one of which having a relatively lower thermal expansion coefficient than another of said layers, said composite wall deforming with changes in temperature and having a critical temperature whereat said composite wall snaps from one stabilized curvature condition to a different stabilized curvature condition, said critical temperature being outside said operational temperature range, said composite wall having an initial deformation in one of said stabilized curvature conditions to render said composite wall frequency sensitive.
A thermally compensated frequency controlled microwave resonator for operation over a predetermined operational temperature range, comprising:
- a rectangular resonator having conductive inner wall surfaces and oppositely disposed broad and narrow walls, said narrow walls being composite walls of integral wall layers one of which having a relatively lower thermal expansion coefficient than another of said layers, said composite wall deforming with changes in temperature and having a critical temperature whereat said composite wall snaps from one stabilized curvature condition to a different stabilized curvature condition, said critical temperature being outside said operational temperature range, said composite wall having an initial deformation in one of said stabilized curvature conditions to render said composite wall frequency sensitive.
Dependencies are inferred from the claim text.