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An aqueous leaf extract of Desmodium gangeticum was employed to synthesize silver nano particles. Rapid formation of stable silver nanoparticles were observed on exposure of the aqueous leaf extract with solution of silver nitrate. The silver nanoparticles were characterized by UV-visible spectroscopy, scanning electron microscopy, energy dispersive X-ray… (More)
Design of circular waveguide cavity filter with three resonant cavities has been presented using mode matching method. The filter has rectangular waveguides for its input and output. The first and last coupling element is a rectangular iris and other coupling elements are circular irises.