High SRF special inductors for BIAS-T, QPL and ultra stable

These inductors for microwave have high SRF and very good QPL, they are stable in temperature so they are used for very critical functions like BIAS T or "decoupling on power supply". BIAS-T does not come cheap or easy to build, the aim is to supply power to an RF device like broadband MMIC, low noise amp, switch, pin or tuning varactor etc... The difficulty is to select critical components, C and L, free from parasitic resonances within a wide frequency range (3-5 decades), technicians well know the importance of good decoupling in amplifiers and high performance active devices. One rule is to reduce the size, in fact, two of these inductors have an SRF> 15 GHz, another inductances can be inserted in order to obtain the desired value. They can be considered as a complementary component of beam-lead capacitors, the size is so small that the similarity is almost appropriate.

Typical BIAS-T	Typical decoupling on wide band MMIC power supply