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Please use this identifier to cite or link to this item: http://hdl.handle.net/10651/46394

Title: Complex Impedance Transformers Based on Branch-Line Hybrid Couplers
Author(s): Alcón García, Pablo
Esparza López, Nuria
Herrán Ontañón, Luis Fernando
Las Heras Andrés, Fernando Luis
Keywords: Hybrid coupler
Issue date: 2016
Publisher: EMW
Publisher version: http://dx.doi.org/10.2528/PIERC16091501
Citation: Progress in Electromagnetics Research C, 69, p. 147-157 (2016); doi:10.2528/PIERC16091501
Format extent: p. 147-157
Abstract: A topology, equations and design methodology for complex impedance-transforming branch-line hybrid couplers are presented. This method also allows the realization of real impedancetransforming to higher impedances. Limitations for real, imaginary and complex impedances are discussed. Test results are shown for a 3 dB 50 to 450 Ω hybrid coupler, at a 2 GHz center frequency, with a 21% bandwidth, an amplitude balance of 4.35 ± 1 dB and a phase balance of 92.16◦ ± 8.8◦. To showcase the complex impedance scenario, two 3 dB 50 Ω to 70 − 200j Ω are measured at a 2 GHz center frequency. One of these couplers uses a technique for reducing the chip size, yielding a 22.5% bandwidth, 4 ± 0.9 dB amplitude balance and 93.22◦ ± 6.74◦ phase balance, while accomplishing a 25% size reduction
URI: http://hdl.handle.net/10651/46394
ISSN: 1937-8718
Sponsored: Principado de Asturias, Plan de Ciencia, Tecnología e Innovación (PCTI): BP12-032 y BP13-042. Ministerio de Economía e Innovación (España): proyecto TEC2014-54005-P (MIRIIEM). Principado de Asturias-FEDER: GRUPIN14-114
Project id.: Principado de Asturias/BP12-032 y BP13-042 (PCTI)
MINECO/TEC2014-54005-P
Principado de Asturias-FEDER/GRUPIN14-114
Appears in Collections:Artículos
Ingeniería Eléctrica, Electrónica, de Computadores y Sistemas
Investigaciones y Documentos OpenAIRE

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