Abstract: A spherical resonator device includes a resonant sphere around which transducers for electrical coupling are metallized layers on a flat surface shaped to provide exposure of a sphere to a quasi constant field. In particular, the pattern comprises a transmission line of non-constant width in the region proximate to the sphere where a taper is provided which increases in width with distance from the sphere.

Abstract: A spherical resonator device includes a resonant sphere around which transducers for electrical coupling are metallized layers on a flat surface shaped to provide exposure of a sphere to a quasi constant field. In particular, the pattern comprises a transmission line of non-constant width in the region proximate to the sphere where a taper is provided which increases in width with distance from the sphere.

Abstract: A new type of heater support structure for YIG sphere support rods used in high frequency YIG oscillators and filters. The heater structure employs a rubber O-ring stretched around the perimeter or one or more rubber rods threaded through holes perpendicular to the rod support holes in the heater block and positioned such that the rods deform the rubber and are thereby pressed against a surface of the rod support hole. In alternative embodiments, V-grooves are formed in the heater block to support the rods. The heater block is brass in some embodiments and barium titanate in others. For brass blocks, the rods are beryllium oxide For barium titanate heater blocks, the rods can be either beryllium oxide or barium titanate.