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dc.contributor.authorEzanuddin, A. A. M.
dc.contributor.authorMohd Fareq, Malek
dc.contributor.authorSoh, Ping Jack
dc.contributor.authorR. Badlishah, Ahmad, Assoc. Prof. Dr.
dc.date.accessioned2010-10-14T06:25:37Z
dc.date.available2010-10-14T06:25:37Z
dc.date.issued2010-04-12
dc.identifier.citationp.1-5en_US
dc.identifier.isbn978-8-4765-3472-4
dc.identifier.urihttp://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=05505681
dc.identifier.urihttp://dspace.unimap.edu.my/123456789/9817
dc.descriptionLink to publisher's homepage at http://ieeexplore.ieee.org/en_US
dc.description.abstractAn investigative design of a circular microstrip antenna (CMSA) and its related geometry intended for 5850 - 7075 MHz Malaysia HAPS operating band is presented. The structure consists of three layers, with the radiator at the top (layer three), a feed on the middle layer (layer two) and finally a grounding copper plate at the bottom (layer one). A commercial microwave laminate with permittivity εr = 2.2 was used to fabricate layer one, and this was fed via a smaller circular copper sheet, via capacitive coupling. The layer 1 and layer 2 height variation was investigated, as well as its x-y feeding location. Apart from normal circular form, slots resembling complementary circular split ring resonators (CCSRR) were placed in each circular structure for bandwidth and gain improvement. The dimension suitability was also investigated. From this work, it was found that the application of a lower dielectric permittivity value for the microwave laminate and a larger thickness was proven to be favourable. A HAPS antenna with bandwidth of more than 2.0 GHz (VSWR < 2), centred at 5850 MHz was successfully designed, when implementing CCSRR slots. In addition, backlobes were also significantly suppressed.en_US
dc.language.isoenen_US
dc.publisherInstitute of Electrical and Electronics Engineering (IEEE)en_US
dc.relation.ispartofseriesProceedings of the 4th European Conference on Antennas and Propagation (EuCAP 2010)en_US
dc.subjectCircular microstrip antenna (CMSA)en_US
dc.subjectMicrostrip antennaen_US
dc.subjectAntennaen_US
dc.subjectHigh Altitude Platform Stations (HAPS)en_US
dc.subjectBandwidthen_US
dc.titleA Bandwidth-improved slotted circular microstrip antenna (CMSA) for High Altitude Platform Stations (HAPS)en_US
dc.typeWorking Paperen_US


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