Quantic PMI Model HP-120-CD-SFF is a broadband high pass filter having a passband of 1 to 20 GHz. Cut-Off Frequency is 1 GHz with a maximum passband insertion loss of 2.0 dB from 1 to 20 GHz.  This model provides 60 dB minimum rejection at 0.5 GHz. Package size is 1.00” x 0.71” x 0.32” and contains SMA (F) removable connectors.  Can be used in surface mount or connectorized applications.  https://www.quanticpmi.com/product-details/hp-120-cd-sff