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The paper presents design of 60GHz parallel coupled-line filters with Chebyshev passbands. Etching limit of printed circuit board technology has been taken into account and analyzed. Three filters, the center operation frequency are all 60GHz, are designed with pre-distortion based on the law of fabrication tolerances, including two conventional parallel coupled-line filters and a V-shaped one which...
This paper presents the effects of defected ground structure (DGS) on different ground planes in RF power amplifiers (PAs). Two DGS patterns etched on the front and back planes of printed circuit board which are named Top-DGS and Bottom-DGS, and a thru microstrip line are manufactured and measured to compare the insert loss at the fundamental and second harmonic frequencies. In order to evaluate the...
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