Part Number: HPF8400M -- High Pass Filter (LTCC Construction) Pass Band 9G-13 GHz. SKU#: AK28-001N.
Enclosure uses RF Design Kit with dimension 0.9375"x0.75x0.59". S-Parameter of part measured on VNA (4 GHz to 13 GHz) is shown in third picture.
Proudly Made in USA by Lotus Communication Systems, INC. in Massachusetts (www.lotussys.com).