Quantic PMI Model EQL-DC20-10-SFF is a DC to 20 GHz passive equalizer with a nominal slope of 9 dB, 10 dB typical loss at DC with an insertion loss of 1 dB typical at 20 GHz.  The equalizer design allows both forward and reverse measurements to be equivalent.  This model has SMA female connectors and a size of 0.53" x 0.70" x 0.26".  Dual use connectorized or a surface mount component.   https://www.quanticpmi.com/product-details/eql-dc20-10-sff