Filtering Structure CMOS Distributed Amplifier with Extended Flat Bandwidth and Improved Input Matching Using Coupling Inductors in The Gate Line

In this paper, we present a design method of bandwidth enhancement for Distributed Amplifiers (DAs), by using filter structures. Instead of using classical constantksection in conventional DA we use both Chebyshev and Butterworth filters in both transmission lines in order to form respectively the gate and drain transmission lines ofthe new DA. In order to improve the bandwidth, the filter structure and series-peaking inductor are used. Thecomplete designed circuit was implemented in TSMC 0.13μm CMOS technology. The simulated results provide 15dB as gain, the bandwidth is 14GHz. The input/outputreturn loss is -10dB, the IIP3 is 5.66 dBm at 6.7 GHz

Keywords:

CMOS Distributed Amplifier , Chebyshev filter , Butterworth filter , Series-peaking inductor , Mderive