Microwave and Optical Technology Letters · 2014 · 29 citations · 6 references
EngineeringElectrical EngineeringMicroelectronicsMicrowave EngineeringOptoelectronicsMicrowave FiltersMicrowave Integrated CircuitsMicrowave System DesignMicrowave Transmission LinesTransmission LinesBandstop FiltersBranch-line CouplersCompact Coupler DesignCoupled-line CouplersCouplersHarmonicsMicrowave Coupler Design
ABSTRACT In this article, a new compact branch‐line coupler with third harmonics suppression using the meander T‐shaped line is suggested. The meander T‐shaped line works similar to a bandstop filter at the second and third harmonics frequencies. The size of the proposed coupler is 22.2 × 14.9 mm 2 , while a conventional coupler is 32.6 × 27.8 mm 2 . Thus, the proposed coupler is considerably smaller than the conventional coupler. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:1382–1384, 2014
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