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dc.contributor.authorThai, Trang Thuyen_US
dc.date.accessioned2008-05-22T17:09:19Z
dc.date.available2008-05-22T17:09:19Z
dc.date.issued2008-05-05en_US
dc.identifier.urihttp://hdl.handle.net/1853/21834
dc.description.abstractAn new antenna structure based on a microstrip Yagi array antenna and a soft surface (SS) ring is designed and developed, which enables a highly directional gain in addition to an improved front-to-back (F/B) ratio of more than 20 dB. The SS ring is shown to be capable of greatly improving the performance while miniaturizing the design s size by half. The implementation of the SS ring to a microstrip Yagi array antenna is demonstrated for different ground sizes to verify its functionality in suppressing surface waves, showing that an improvement of at least 3 dB in the F/B ratio can be obtained. The design is investigated at the center frequency of 5.8 GHz, however, the structure can be easily scaled to other frequency ranges. A parametric analysis is performed to give insight into the operational mechanism of the SS ring and on the critical dimensions that affect the SS structure surrounding the antenna array. In addition, measurements are presented to validate the results obtained via simulation. The principles established in this paper are applicable to other planar antenna designs.en_US
dc.publisherGeorgia Institute of Technologyen_US
dc.subjectFront-to-back (F/B) ratioen_US
dc.subjectMicrostrip Yagi arrayen_US
dc.subjectRadiation-pattern improvementen_US
dc.subjectSoft surfaceen_US
dc.titleDesign and development of a novel compact soft-surface structure for performance improvement and size reduction of a microstrip Yagi array antennaen_US
dc.typeUndergraduate Thesisen_US
dc.contributor.departmentElectrical and Computer Engineeringen_US
dc.description.advisorCommittee Member/Second Reader: Papapolymerou, John; Faculty Mentor: Tentzeris, Manosen_US


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