Taiwan Microelectronics Technologies, Inc. was funded in 2003 by several RF Senior engineers back from Silicon Valley. TM is a fabless monolithic microwave integrated circuit (MMIC) design company. Based on GaAS processing technology, we use InGaP Heterjunction Bipolar Transistors (HBTs) to design power amplifier MMICs, as well as use Pseudo High Speed Electrons Mobility Transistors (PHEMTs) to design RF Switches. We also developed multi-chip modules (MCM) and system in packages (SIP) for wireless communication systems.