Patent ID: 9602091
Date: 2017-03-21
CPC Classifications: H01P,H03H,H03K

Claim:
1. A radio frequency attenuator circuit including: (a) an In port and an Out port; (b) a bypass path including a plurality of serially-connected distributed transmission line elements, a plurality of shunt switches coupled between a respective one of the plurality of distributed transmission line elements and a reference voltage, and first and second state switches respectively coupled between the plurality of distributed transmission line elements and the In and Out ports; and (c) at least one attenuation path, each such attenuation path including a plurality of serially-connected distributed transmission line elements, a plurality of shunt switches coupled between a respective one of the plurality of distributed transmission line elements and a reference voltage, at least one attenuator element serially connected to the plurality of distributed transmission line elements, and first and second state switches respectively coupled between the plurality of distributed transmission line elements and the In and Out ports.