Compensated programmable rf attenuator

Abstract

A programmable RF attenuator having a first connection node and a second connection node is disclosed. The programmable RF attenuator provides RF attenuation between the first connection node and the second connection node based on at least a first attenuation control signal. The programmable RF attenuator includes a first RF attenuator circuit and a first reactance compensation circuit, such that the first RF attenuator circuit includes a first shunt transistor element and a first shunt resistive element, which is coupled to the first shunt transistor element. The first shunt transistor element receives the first attenuation control signal. The first reactance compensation circuit is coupled to the first RF attenuator circuit and at least partially compensates for reactive characteristics of the programmable RF attenuator that affect an attenuation flatness of the programmable RF attenuator.

Dependencies are inferred from the claim text.