Decade Bandwidth FET Functions

Decade bandwidth FET functions have been designed, using an analytical approach followed by a computer optimization. Two experimental functions have been built using commercially available FETS : - a YIG tuned oscillator monotonically tunable from 2 to 20 GHz with 1 mW minimum output power. - an ultrabroadband amplifier covering the frequency range from 150 MHz to 16 GHz with 12 dB flat gain and a V.S.W.R lower than 2.5.