2012
DOI: 10.1002/mop.26980
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Design considerations for compact microstrip resonant cells dedicated to efficient branch‐line miniaturization

Abstract: A conventional compact microstrip resonant cell (CMRC) has been thoroughly investigated to enhance its slow‐wave properties and subsequently ensure an efficient miniaturization of a microstrip circuit.The geometry of a classic CMRC has been improved in terms of slow‐wave effect in two progressive steps: (i) a single‐element topology has been replaced with a double‐element one and (ii) a high‐impedance section has been refined by means of an optimized meander line characterized by the minimal number of disconti… Show more

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Cited by 23 publications
(30 citation statements)
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“…(d)]. Such a structure has been reported to illustrate substantial slow‐wave properties and has proven great usefulness in the process of a branch‐line coupler miniaturization . The transmission properties of the composite structure from Figure (d) can be derived from a chain ABCD matrix of the form given by Eqs.…”
Section: Methodsmentioning
confidence: 99%
See 1 more Smart Citation
“…(d)]. Such a structure has been reported to illustrate substantial slow‐wave properties and has proven great usefulness in the process of a branch‐line coupler miniaturization . The transmission properties of the composite structure from Figure (d) can be derived from a chain ABCD matrix of the form given by Eqs.…”
Section: Methodsmentioning
confidence: 99%
“…As the reference RRC has a rectangular shape , two complementary NUTL geometries are needed to accommodate the interior of the coupler in a highly efficient manner. The improvement of a NUTL geometry has been conducted accordingly to , where a quasi‐lumped inductor in the form of a straight narrow line has been substituted by its meander line realization and the low‐impedance shunt stub has been remodeled to match the other NUTL geometry. As a result of following these considerations, two complementary NUTL realizations (see Fig.…”
Section: Methodsmentioning
confidence: 99%
“…An important drawback of traditional BLCs—just as majority of other circuits constructed using conventional transmission lines—is their large footprint . There have been several methods developed over the years for reducing BLC sizes . Perhaps the most efficient strategies are those based on replacing the transmission lines of the conventional circuit with their corresponding slow‐wave structures .…”
Section: Introductionmentioning
confidence: 99%
“…Perhaps the most efficient strategies are those based on replacing the transmission lines of the conventional circuit with their corresponding slow‐wave structures . Other interesting techniques employ ground plane perforations, or modifications of the transmission lines by means of fractal geometries . Utilization of unconventional topologies may result in over 85 percent miniaturization rate .…”
Section: Introductionmentioning
confidence: 99%
“…Currently prevailing approach to circuit size reduction is based on decomposition of a conventional circuit and subsequent replacement of its building blocks with so‐called slow‐wave structures whose role is to approximate the characteristics of their conventional counterparts while offering an increased electrical to physical length ratio . Slow‐wave structures are typically realized as intricate combinations of high‐impedance strips and low‐impedance stubs or line sections . They embody the concept of spatially separated storage of magnetic and electric energy as explained in .…”
Section: Introductionmentioning
confidence: 99%