DESIGN METHOD FOR MICROWAVE HIGH OUTPUT POWER AMPLIFIER

摘要

PROBLEM TO BE SOLVED: To provide the design method for the microwave high output power amplifier which is simply realized and from which a maximum power is obtained while satisfying almost the matching with a load. ;SOLUTION: The design method of the microwave high output power amplifier has a step (1) where an optimum load resistor (r1) to obtain a non-distortion maximum power is obtained through drawing based on an I-V characteristic (DC characteristic) between a drain and a source of a GaAS FET, a step (2) where an S parameter providing a maximum output of the GaAs FET is measured by a small signal operation, a step (3) where each equivalent circuit constant is decided so as to be in matching with the S parameter obtained as above, and a step (4), where the equivalent circuit constant R_ds (equivalent drain-source resistance) obtained as above is replaced with an optimum load resistance (r1) obtained in the step (1) above and the actual circuit design is conducted finally. The microwave high output power amplifier is designed by the steps as above.;COPYRIGHT: (C)1998,JPO