Invention Grant
US08386986B2 Temperature controlled attenuator 有权
温度控制衰减器

Temperature controlled attenuator
Abstract:
In one embodiment, a temperature controlled attenuator is disclosed having an attenuation circuit and a control circuit. The attenuation circuit includes a series connected attenuation circuit segment and a shunt connected attenuation circuit segment, as well as additional attenuation circuit segments. Each attenuation circuit segment includes a stack of transistors that are coupled to provide the attenuation circuit segment with a variable impedance level having a continuous impedance range. Furthermore, the temperature controlled attenuator includes a temperature controlled circuit that adjusts an attenuation level of the attenuation circuit in accordance to an operating temperature. In this manner, the attenuation level of the temperature controlled attenuator is temperature dependent.
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