Microwave ferrite resonator mounting structure having reduced mechanical vibration sensitivity
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United States of America Patent
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Jul 3, 2001
Grant Date -
N/A
app pub date -
Apr 1, 1999
filing date -
Apr 1, 1999
priority date (Note) -
Expired
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Abstract
A coupling structure for a ferrite-based resonator comprises a short, stiff mounting rod and ferrite sphere are mechanically coupled to a substrate that provides support for a stiff coupling loop. The structure reduces differential movement between the sphere and the coupling loop, thereby reducing vibration-induced degradation of resonator performance. This resonator structure may be used in tunable, wideband oscillator, filter, or amplifier circuits, for example. In one embodiment, the mounting rod is a poor thermal conductor, thereby thermally isolating the sphere, which becomes nearly isothermal.
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