Automated synthesis and measurement of broadband CMOS buffer amplifier 1–5 GHz

The design and measurement results of broadband 1-5 GHz buffer amplifier (BA) MMIC based on CMOS transistors (0.25 um SiGe BiCMOS process) are presented. BA's topology was obtained by genetic-algorithm based software tool for structural-parametric synthesis Geneamp. The advantages of the developed amplifier for chosen fabrication process are: broadband frequency (overlap L-, S- and partially C-band); gain is 17.25±0.75 dB; low noise figure - less than 4 dB; high linearity OP
_1dB
- more or equal to 13.2 dBm, OIP
₃
- more than 23.4 dBm. Designed amplifier is at a level of the best abroad counterparts by the presented above figures of merit. The amplifier design with Geneamp software tool significantly reduced the design time.