Abstract
ABSTRACTIn this article, a novel double balanced image‐rejected mixer is proposed. To increase image‐rejection, a novel power divider based on quarter‐wavelength resonators, a pair of radial‐stub‐loaded coupled line filters, and a 3 dB RF quadrature microstrip/slot line coupler are employed in our design. The measurement is implemented using the Rohde & Schwarz four‐port vector analyzer. The measured results show that, the conversion loss is less than 17 dB with the image rejection over 14 dB within the operating band from 3.1 GHz to 10.6 GHz. Good performances have been achieved. © 2017 Wiley Periodicals, Inc. Microwave Opt Technol Lett 59:578–584, 2017
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