HIGH-LINEARITY QUADRATURE HYBRID ATTENUATOR

摘要

Various arrangements of a PIN diode attenuator circuit are presented. The PIN diode attenuator circuit may include a quadrature hybrid coupler. The PIN diode attenuator circuit may include a direct current (DC) feed circuit comprising an adjustable DC voltage source. PIN diode attenuator circuit may include first and second PIN diode circuits connected with ports of the quadrature hybrid coupler. Each PIN diode circuit may include a PIN diode having a first cathode of the first PIN diode directly connected to a ground potential and a first anode of the first PIN diode connected with the DC feed circuit and the quadrature hybrid coupler.