The Experimental Comparison on the Various LNA Circuit Topologies for Wideband Applications
Journal Title: International Journal of Engineering and Science Invention - Year 2018, Vol 7, Issue 4
Abstract
This paper critically explains comparison of the various low noise amplifier (LNA) circuit topologies using pHEMT technologies for wideband and ultra-band applications. In addition to the conventional techniques, all designs are evaluated with proper connecting microstrip lines. The proposed schemes are simulated simultaneously with measurements of noise figure, gain, return loss and stability are extensively compared with each other at various microwave frequencies. This paper includes the topologies like cascode, active load, balanced and cascaded structure. The performances of all circuit topologies are put into evidence numerically and the results are simulated in ads and AWR microwave office tool. At ultra-band frequencies, the best proposed scheme is found to be the cascaded topology. The new design cascaded topology LNA circuits combined with good matching network and best biasing circuit with the inherent pHEMT device technology, which provides performance benefits for next-generation for all ultra-wideband wireless applications.
Authors and Affiliations
Kishor G Sawarkar, Kushal Tuckley
Keywords
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