MACOM designers used NI AWR Design Environment™ software inclusive of Microwave Office circuit design software, AXIEM 3D planar EM simulator, Analyst™ 3D FEM simulator, and APLAC harmonic balance (HB) simulator to successfully design and simulate a 4 W Ka-band PA using a 2 mil thick 0.15 um GaAs pseudomorphic high-electron mobility transistor (pHEMT) process.