Circuit Design and FM Noise Characteristics of 20/30 GHz GaAs MESFET Multiplier Chains

Multiplier chains for 20/30 GHz bands were developed using two-stage GaAs MESFET doublers. They provide 11 dBm output power with 4 dB gain at 18 GHz and 4 dBm output power with 5 dB loss at 30 GHz. Circuit design and FM noise characteristics will also be described.