The HSMP-38xx Pi Attenuator demonstration circuit allows you to test and evaluate the performance of either the HSMP-3814 or HSMP-3864 diodes under your specific application condition. This circuit is designed with 50 W input and output microstrip lines and is made on 0.031-inch thick FR-4 dielectric material. The layout accommodates a SOT-23 surface mount package. This is a broadband circuit, operating from <3 MHz to 3 GHz. A complete discussion is included in the Agilent Technologies Application Note 1048.
AN 1048: A Low Cost Surface Mount PIN Diode Pi Attenuator