Patent ID: 8334718
Filing Date: 2012-12-18
Classification: H01L,H03H,H03L

Abstract:
1. An attenuator, comprising: one or more silicon-on-insulator type (SOI) substrates, each of the one or more SOI substrates having a device layer, a handle layer, and an insulating layer between the device layer and the handle layer; a first attenuation circuit having a first variable attenuation level that is adjustable within a first continuous attenuation range, the first attenuation circuit, comprising: a control circuit adapted to receive an attenuation control signal, the control circuit being operably associated with the first plurality of stacked transistors to control the first variable impedance level based on a signal level of the attenuation control signal and the control circuit being operably associated with the second plurality of stacked transistors to control the second variable impedance level based on the signal level of the attenuation control signal.