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Miniaturized quasi‐lumped coupled‐line single‐section directional coupler designed in multilayer LTCC technology
Author(s) -
Piekarz Ilona,
Sorocki Jakub,
Wincza Krzysztof,
Gruszczynski Slawomir,
Muller Jens,
Welker Tilo
Publication year - 2013
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.27582
Subject(s) - miniaturization , hybrid coupler , power dividers and directional couplers , broadband , rat race coupler , electrical engineering , microwave , inductor , engineering , shunt (medical) , electronic engineering , optoelectronics , materials science , voltage , telecommunications , medicine , cardiology
The design of a miniaturized broadband directional coupler realized with the use of a quasi‐lumped element approach has been presented.The designed coupler takes advantage of Low Temperature Co‐fired Ceramics (LTCC) technology, in which miniaturized coupled inductors are realized with the use of a multilayer stacked structure being vital in terms of possible miniaturization of the circuit. It has been shown that the mutual coupling between consecutive turns of the spiral coupled inductors deteriorate the coupler's performance which can be improved when appropriate mutual and shunt capacitances are added. The theoretical analysis as well as measurements of a 3‐dB directional coupler operating at f 0 = 1.5 GHz have been presented. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:1401–1405, 2013; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27582