TY - JOUR AU - Liu, Yuanan AB - ABSTRACT A novel compact single‐layer wide‐band planar balun with high isolation is proposed. It is composed of a broadband coupled‐line power divider and an improved phase shifter using coupled‐line (CL) and composite right/left‐handed transmission line (CRLH TL). The CRLH structure is used to realize the advanced phase response while the coupled‐line power divider can be utilized to provide the performance of wide‐band matching and isolation. For demonstration, a novel planar microstrip balun operating at ∼2.75 GHz is designed and implemented. The proposed balun has many advantages including compact single‐layer structure, excellent return loss, high isolation, and perfect phase response. Finally, good agreements between the simulated and measured results verify this design. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:372–376, 2016 TI - A compact planar wide‐band balun with high isolation based on coupled‐line and composite right–left‐handed transmission line JF - Microwave and Optical Technology Letters DO - 10.1002/mop.29567 DA - 2016-02-01 UR - https://www.deepdyve.com/lp/wiley/a-compact-planar-wide-band-balun-with-high-isolation-based-on-coupled-MSnedLMdH0 SP - 372 EP - 376 VL - 58 IS - 2 DP - DeepDyve ER -