The HL9444 from Hyperlabs is Bias Tee that operate from 35 kHz to 40 GHz. It can handle a DC voltage of up to 30 V and DC current of up to 175 mA. This bias tee has an insertion loss of less than 1.55 dB and a return loss of 15 dB. It has a rise time of 8.75 ps and a group delay of 105 ps (± 10 ps ripple). The bias tee is available in an RoHS and REACH compliant module that measures 49.53 x 33.02 x 13.46 mm with 2.92 mm plug/jack connectors.