Hewlett-packard Company

Terry A Jones

Thomas W Finkle

In a tunable ferrimagnetic resonator circuit, apparatus and method for tuning the circuit by manipulation of the position of the YIG spheres with respect to their associated coupling loops and the magnetic field. Each YIG sphere can be moved in three axial directions or rotated for alignment with the magnetic field while the circuit is under test, without the need for removal of any parts and without visual observation. Once the sphere has been positioned, it is automatically retained in that position without the need to be encapsulated in epoxy. The tuning process can be repeated or the circuit can be retuned at any time. The tuning apparatus can be coupled to external tooling which is manually manipulatable. Limits are included in the external tooling to prevent the spheres from touching other portions of the circuit.

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Santa Rosa, CA, United States of America

Terry A Jones