Design of Asymmetric Multi-Element Directional Couplers with Tandem Section as the First Element

An analysis is presented of a class of asymmetric multi-element directional couplers (ADC) for any number of elements and with tandem section (TS) as the first of its. A table of element values is given for three-and four-element 3-dB couplers for various ripple levels. It is shown that described ap...

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Bibliographic Details
Main Authors: Gorbachev, A.P., Ermakov, E.A.
Format: Conference Proceeding
Language:English
Subjects:
Bandwidth
Circuit synthesis
Coupling circuits
Directional couplers
Equivalent circuits
Microstrip
MMIC
MMICs
Reflection
Scattering
wide-band
Wideband
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Summary:An analysis is presented of a class of asymmetric multi-element directional couplers (ADC) for any number of elements and with tandem section (TS) as the first of its. A table of element values is given for three-and four-element 3-dB couplers for various ripple levels. It is shown that described approach overcomes the tight coupling problem associated with the method proposed by R. Levy, but that it introduces a bandwidth contraction penalty.
DOI:10.1109/MEMIA.2005.247506