pSemi RF, RFID, Wireless Evaluation Boards EK42641-04

PE42641 UltraCMOS®, HaRP™ Switch, SP4T Evaluation Board

The SP4T switch EK Board was designed to ease customer evaluation of Peregrine’s PE42641. The RF common port is connected through a 50 Ω transmission line via the top SMA connector, J1. RF1, RF2, RF3 and RF4 are connected through 50 Ω transmission lines via SMA connectors J3, J5, J2 and J4, respectively. A through 50 Ω transmission is available via SMA connectors J6 and J7. This transmission line can be used to estimate the loss of the PCB over the environmental conditions being evaluated. The board is constructed of a two metal layer FR4 material with a total thickness of 0.031”. The bottom layer provides ground for the RF transmission lines. The transmission lines were designed using a coplanar waveguide with ground plane model using a trace width of 0.044”, trace gaps of 0.020”, dielectric thickness of 0.028”, metal thickness of 0.0021” and εr of 4.3.