Wave transmission lines and networks – Attenuators
Reexamination Certificate
2007-04-17
2007-04-17
Jones, Stephen E. (Department: 2817)
Wave transmission lines and networks
Attenuators
C333S02800T, C338S216000
Reexamination Certificate
active
11107558
ABSTRACT:
The present invention is an absorptive-type cable temperature and frequency equalizer that offsets changes in the gain of the other circuit components cables with increases in temperature and/or frequency. The equalizer comprises a temperature variable filter network having component values and a temperature coefficient of resistance that vary over temperature and frequency to produce a desired response. The temperature and frequency equalizer has at least one thick film thermistor connected in series with a quarter wavelength transmission line. The thermistor absorbs forward and reflected signals at lower frequencies.
REFERENCES:
patent: 3569869 (1971-03-01), Sutton et al.
patent: 4135132 (1979-01-01), Tafjord
Blacka Robert J.
Fejzuli Alen
Perschnick Gene A.
Roldan Nelson
Jones Stephen E.
Morgan & Lewis & Bockius, LLP
Smith Interconnect Microwave Components, Inc.
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