Wave transmission lines and networks – Coupling networks – Wave filters including long line elements
Patent
1993-02-16
1994-03-29
Ham, Seungsook
Wave transmission lines and networks
Coupling networks
Wave filters including long line elements
3332192, 219504, 219530, 219540, 165 801, H01P 1218, H05B 306
Patent
active
052988724
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.
REFERENCES:
patent: 3828292 (1974-08-01), Grossman et al.
patent: 4334201 (1982-06-01), Shores
patent: 5221912 (1993-06-01), Keane et al.
Dunseth John
Trump David
Fish Ron
Ham Seungsook
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