The SW438 is a DPDT GaAs switch, and designed for 0.1 to 6GHz , dual-band wireless LAN applications . 

The switch can be used for two voltage inputs (V1 and V2). 

Depending on the logic voltage level applied to the control pins, the ANT1 and ANT2 pins connect to one of two switched RF outputs (RX or TX) diversity function in a variety of wireless communication systems.

The SW438 is housed in a miniature 1.5 x 1.5 (mm), 6-pin, DFN leadless package (Pb free), and features low insertion loss, high isolation and high linearity,

particularly suitable for GSM/3G/LTE/WLAN applications where high power switching is required.