Renaissance has developed a new coaxial isolator that operates from 2 to 8 GHz in a single compact package size. Typical insertion loss is 0.5 dB and at band edges, the loss typically is 1.0 dB at room temperature. With return loss and isolation tuned to 14 dB at room temperature, this unit is ideal for EW Jammer type applications.

Click below for datasheet
http://www.rec-usa.com/Data%20Sheets/2A6BA.pdf