RFSW04C RF SPDT Switch is used in TDD (Time Division Duplexing) mode for switching between TX and RX path with low loss, broadband and high isolation. This RF switch is reflective type and the design incorporates series-shunt circuit elements with the locations optimized to achieve outstanding broadband performance in 20-40 GHz. The combination of broadband performance along with very fast switching and excellent settling time makes this device ideal for many applications including test & measurement and broadband communication systems. This switch is designed using the 0.1um GaAs pHEMT process. All results are shown in datasheet with considering of parasitics and coupling effects in layout.