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dc.contributor.authorChang Rong-Yuanen_US
dc.contributor.authorCheng Fu-Chiarngen_US
dc.date.accessioned2014-12-16T06:14:03Z-
dc.date.available2014-12-16T06:14:03Z-
dc.date.issued2013-03-26en_US
dc.identifier.govdocH01P005/12zh_TW
dc.identifier.govdocH03H007/46zh_TW
dc.identifier.govdocH03H007/48zh_TW
dc.identifier.govdocH03H007/38zh_TW
dc.identifier.urihttp://hdl.handle.net/11536/104494-
dc.description.abstractIn the present invention, a novel multi-port microwave circuit, also known as a multiple bi-directional circulator, is designed based upon the basis of the EBG characteristic of the meta-materials. Firstly, the concept of the traditional single-layered mushroom structure is extended with the suspending microstrip line to the multi-layered structure. In this way, the multi-layered structure can reveal multi-band EBG characteristic and achieve miniaturization. Moreover, we use three sets of proposed dual-band EBG circuit to be series-connected in a ring-type structure. By using proper impedance matching, the design of the multiple bi-directional circulator is accomplished. It combines the capabilities of the diplexer, the duplexer and the circulator. The triplex bi-directional circulator can integrate three kinds of communication systems with each other, which operates at frequencies comprising GSM 1800 MHz, WiFi 2.45 GHz, and WiMAX 3.5 GHz, respectively. It is suitable for the information integration of multi-band and multi-system communication applications.zh_TW
dc.language.isozh_TWen_US
dc.titleMultiplexed bi-directional circulatorzh_TW
dc.typePatentsen_US
dc.citation.patentcountryUSAzh_TW
dc.citation.patentnumber08405471zh_TW
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