"The radio craze will die out in time."
Thomas Edison ; 1922
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| Number | Title | Issue Date |
| 6348846 | Filter circuit including system for tuning resonant structures to change resonant frequencies thereof A structure (and method) for tuning a resonant structure, includes a resonant structure including either a predetermined material coating provided on either a bar or a cantilever, or a lightly doped single crystal semiconductor material, and a circuit for... | 02/19/2002 |
| 5075654 | Resonator tuning arrangement A ferrite tuning arrangement for a resonator includes a ferrite loaded line in the form of a stripline having an inner conductor, an outer conductor and a ferrite disposed between the inner and outer conductors, with the stripline being adapted for coupli... | 12/24/1991 |
| 4858159 | Frequency-tuneable filter calibration An apparatus and method for calibrating a yttrium-iron-garnet-tuned filter (YTF) is disclosed. Instead of using both tune+span information from the 1st LO, only the sweep ramp used to span the 1st LO is used for the YTF's s own swept spans, and the YTF ha... | 08/15/1989 |