Wave transmission lines and networks – Attenuators
Reexamination Certificate
2008-04-22
2008-04-22
Jones, Stephen E. (Department: 2817)
Wave transmission lines and networks
Attenuators
C333S08100R
Reexamination Certificate
active
10597985
ABSTRACT:
This specification discloses a temperature compensation attenuator comprising a base6, a film thermistor1disposed on the base6, an input terminal3and an output terminal4which are connected to the two ends of the film thermistor1, respectively, and a film resistor2, wherein the top side of the film resistor2is electronically connected to the bottom side of the thermistor1, and the bottom side of the film resistor2is electronically connected to the ground. By connecting the temperature compensation attenuator of the present invention to a high frequency or microwave active circuit, it can compensate for the variance in the gain of the high frequency or microwave active device or the drift of the frequency characteristic of the active device due to temperature variance. The temperature compensation attenuator of the present invention can be used in various circuits and systems utilizing high frequency waves or microwaves, in particular, it is suitable for mobile communication systems, satellite communication systems, and radar systems which require strict temperature characteristics.
REFERENCES:
patent: 5332981 (1994-07-01), Mazzochette et al.
Yan Yuejun
Yan Yuepeng
Jones Stephen E.
Matthias Scholl P.C.
Scholl Matthias
Yantel Corporation
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