Ka-band 2W and 4W MMIC Power Amplifiers In 7×7mm Low-cost SMT Package

This paper describes the design and usage of 2 W and 4 W SMT packaged high power amplifiers (HPA) suitable for low cost sub mm-wave applications. The development of PHEMT HPA MMICs are described. The designed 2 W and 4 W power amplifiers exhibit 20 dB of small signal gain, 33 dBm and 35 dBm 1 dB gain compression output power respectively in between 24 and 31 GHz frequency range. Those MMIC PAs were assembled in 7 x 7 mm low cost SMT packages, and obtained nearly identical RF performances as the die parts.