A State-of-the Art Review on Distributed Amplifiers.

Distributed amplifiers (DAs) are always considered the best choice for wideband amplification as they offer appropriate gain, matching and noise figure over the large bandwidth. With the recent advancements in microwave integrated circuits, monolithic microwave integrated circuits and device processing technology, DAs have discovered new applications of the wideband amplifier. At mm-wave frequencies, the wideband amplifier is used for several applications such as radar imaging, space radiometry, optoelectronics, high-frequency transceivers, plasma diagnostics, ultra-fast measurement systems and defence systems. The main requirement of these applications is to amplify short pulses or to realize a high data rate. Studies show that DA may also be used for next-generation 100+ Giga-baud/s coherent linear fiber optic applications. This paper presents an overview of various types of DAs. In the paper, the different technologies and design methods used for designing various types of DA (from 2009 to 2019) are reported. Furthermore, a comparative analysis of the gain-bandwidth product based on different technologies is given. [ABSTRACT FROM AUTHOR]