A 0.8–8 GHz Multi-Section Coupled Line Balun
AbstractIn this work, we propose a wideband multi-section transforming coupled-line balun using near equal length transmission line elements. The resulting design is realized by cascading several coupled-lines with minimal discontinuities. The multi-section Chebyshev matching optimizes bandwidth at the expense of passband ripple. The proposed design delivers good impedance matching and consistent 180° phase shift over 0.8–8 GHz frequency spectrum. Furthermore, the need for vias in conventional balun designs is relaxed by replacing the short-circuited (SC) terminal by its equivalent dual open-circuited (OC) element. The proposed design is simulated, fabricated, and measured. Both simulated and measured results are in a good agreement, and show an input port matching of below −9.7 dB over the design bandwidth, with a maximum phase and amplitude imbalance of 2.1° and 0.9 dB, respectively. View Full-Text
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Itapu, S.; Almalkawi, M.; Devabhaktuni, V. A 0.8–8 GHz Multi-Section Coupled Line Balun. Electronics 2015, 4, 274-282.
Itapu S, Almalkawi M, Devabhaktuni V. A 0.8–8 GHz Multi-Section Coupled Line Balun. Electronics. 2015; 4(2):274-282.Chicago/Turabian Style
Itapu, Srikanth; Almalkawi, Mohammad; Devabhaktuni, Vijay. 2015. "A 0.8–8 GHz Multi-Section Coupled Line Balun." Electronics 4, no. 2: 274-282.