# My new GPSDO

I have not posted for a long time! Not only because I was too busy in the meantime, but also because I was working on a quite involved project: a new GPSDO!
Everybody knows that a matching network can be built using a quarterwave transformer. E.g. if a load of impedance $$Z_L$$ shall be matched to a source having impedance $$Z_S$$, this can be accomplished by using a transmission line with an electrical length of 90 degrees and characteristic impedance $$Z_0 = \sqrt{Z_S\,Z_L}$$. However, is this also possible using lumped elements?