1. Product application:A) Broadband Amplifier Some broadband amplifiers do not have a DC blocking capacitor inside, and the output terminal needs to be powered and a biaser is required.Some amplifiers have built-in blocking capacitors, which do not require additional biasers. B) Optical fiber communication, laser drive; The driving current required by the laser diode is injected through the DC terminal of the biaser;Communication data is injected through the RF side. 2. Product principle: Wideband amplifier feeding circuit, high frequency is affected by parasitic capacitance parameters, and the performance drops sharply, so BiasTee needs to be used for feeding. BiasTee consists of ultra-broadband, near-perfectized, high-frequency inductors and capacitors without resonance points. DC blocking capacitor: block DC to prevent DC voltage from leaking to subsequent circuits or testing inst ents; High-frequency inductor: isolates AC information and prevents high-frequency signals from leaking into the power supply system. Different batches may have different appearance/silk screen printing, which does not affect use. Colour:Silver Material:Metal Package Contents: 1 x N Head RF Feeder Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.