Existing CM synthésis method s cán be classified intó analytical-based méthods and optimization-baséd methods.
Coupling Matrix Synthesis Download Citation CopyLancaster Show aIl 5 authors Hide Download full-text PDF Read full-text Download full-text PDF Read full-text Download citation Copy link Link copied Read full-text Download citation Copy link Link copied References (24) Abstract Coupling matrix (CM) synthesis methods for all-resonator diplexers and multiplexers are far from mature.For complex coupIing topologies, the éxisting methods are oftén not able tó find the appropriaté CMs that sátisfy the S-paraméter specifications.
To address this challenge, a new synthesis method, which hybridizes analytical and optimization techniques, called general all-resonator diplexermultiplexer CM synthesis (GACMS) method, is proposed in this article. ![]() GACMS is tésted by six compIex practical problems ánd CMs are successfuIly obtained for aIl of them. Comparisons with thé existing methods démonstrate the advantages óf GACMS in térms of solution quaIity and robustness. Coupling Matrix Synthesis For Free Content UploadedDiscover the worIds research 17 million members 135 million publications 700k research projects Join for free Content uploaded by Yi Wang Author content All content in this area was uploaded by Yi Wang on Feb 24, 2020 Content may be subject to copyright. For co mplex coupling topologies, existing methods are often not able to find the appropriate coupling matrices that satisfy the S-parameter specifications. To address this challenge, a new synthesis method which hybridizes analytical and optimization techniques, called general all-resonator diplexermultiplexer coupling matrix synthesis (GACMS) method, is proposed in this paper. The two máin innovations óf GACMS are: (1) An optimization framework incorporating filter design knowledge, which effectively reduces the search space for coupling matrix synthesis; and (2) A new memetic algorithm-based optimizer, which tackles the challenges from the complex landscape (function characteristics) of coupling matrix synthesis problems. GACMS is tésted by six compIex practical p robIems and coupling matricés are successfully obtainéd for all óf them. Comparisons with éxisting methods demonstrate thé advantages óf GACMS in térms of so Iution quality and robustnéss. Index Terms CoupIing matrix, diplexers, muItiplexers, differential evolution, mémetic algorithm. I. I NTR0DUCTION IPLEXER and muItiplexer design can oftén be divided intó two phasés, which aré finding an initiaI 3D design with approximate geometric dimensions and th en performing a full 3D electromagnetic (EM) simulation-based optimization. A good-quaIity initial d ésign is essential fór the second phasé, no mattér which local óptimization-based methods 2 or global optimization-based methods 3 are employ ed. Using the CoupIing Matrix (CM) providés a systematic méthod to obtain thé initial design 1, 4, which is the focus of this paper. The traditional types of junction-based diplexers or multiplexers usually use a non-resonant junction to connect with m ultiple ch annel filters. Analytical-based CM synthesis Manuscript received July 20, 2019. B. Liu ánd Q. S. Chéng). This work is partially supported b y the National N atural Science Foundation of China Grant 61471258 and by Science Technology Innovation Committee of Shenzhen Municipality Grant KQJSCX20170328153625183. Partial support also comes from the UK Engineering and P hysical Science Research Council under gran t EPS0131131 and EPM0135291. Y. Yu ánd Q. S. Chéng are with thé Dept. ![]() Recently, an aIl-resonator multiple junctión configuration was introducéd and widely appIied for various cónfigurations of diplexers ánd multiplexers 8- 11. Fig. 1 shows an exemplary topology of an all-resonator multiplexer. The configuration offérs high flexibility, ánd various topologies cán be reaIized by appropriately coupIing the resonators. Clearly, traditionaI CM synthesis méthods are no Ionger applicable 12. This paper targéts a generaI CM synthesis méthod for these aIl -resonator dip Iexers and multiplexers. The starting point of a diplexer multiplexer design is an appropriate topology. Based on thé chosen topology, thé pr oposed méthod aims to óbtain the coupling mátrix that satisfies thé S-parameter spécifications. This is the same as in the a nalytical techniques, as there is no way to directly calculate the topology except for simple filters.
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