... half-zones, are given by: 100 Advanced Microwave Circuits and Systems ỡK ù ù ù ùK ù ù ùK ù ù ùK ù ù ợ = 4n = 4n - = 4n + = 4n + Q 4n, 4n - Q 4n, 4n - Q 4n + 2, 4n + Q 4n + 2, 4n + (25) These conditions ... relationship: RL Ropt , AuxN (50) 130 Advanced Microwave Circuits and Systems M1 /4 Input A1 D1 /4 Z0,2 /4 A2 D2 /4 Input Power Splitter /4 Z0,1 /4 AN Z0,N Output DN RL Fig 22 Proposed schematic ... on GaAs MMIC fast sample&hold, IEE Proceedings -Circuits, Device and Systems, Vol. 143 , No.6 Dec 1996 pp.337- 342 106 Advanced Microwave Circuits and Systems The Doherty Power Amplifier 107 x The...