Low noise amplifier design for dense phased arrays

• Main Author: Mohammad, Afzal
• Format: Others
• Language: English
• Published: Högskolan i Gävle, Institutionen för teknik och byggd miljö 2008
• Subjects: Electronics; Elektronik
• Online Access: http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-518

Radio Astronomers demand for highly sensitive astronomical facility. Their demand is a radio telescope that can detect the weakest and deepest radio signal. To fulfill the demand of high sensitive telescope, an entirely new way of realizing a radio telescope is required. One of the most important components in the RF front end that determines the sensitivity of a radio telescope is the Low Noise Amplifier (LNA). The project has the selected process technologies which was searched and about the different noise matching topologies, input matching topology, wide band noise and input matching topologies has discussed by the author to the requirement of LNA in Astronomical purposes. In this report, the best process technology candidate was chosen apart from selected technology candidates to obtain the minimum noise temperature over broad range frequency upon the modern era of Astronomical LNAs. The work was continued to design a single ended LNA to obtain desired transistor parameters while using different noise matching topologies, input matching topologies, wideband noise and input matching topologies to have an LNA achievement with the design goal. Further two stage amplifier was implemented to obtain minimum noise temperature, good stability, high gain, good input and output reflection coefficient with less power consumption.