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Chee-Parng Chua

Bio: Chee-Parng Chua is an academic researcher. The author has contributed to research in topics: Loop antenna & Antenna measurement. The author has an hindex of 1, co-authored 2 publications receiving 9 citations.

Papers
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Proceedings ArticleDOI
07 Dec 2005
TL;DR: In this paper, a packaged integrated rectangular dielectric resonator antenna (DRA) configuration was proposed and demonstrated the potential advantages achieved by choosing rectangular DRA geometry as compared to similar design using a cylindrical DR geometry.
Abstract: The objectives of this paper are to propose a packaged integrated rectangular dielectric resonator antenna (DRA) configuration and demonstrate the potential advantages achieved by choosing rectangular dielectric resonator geometry as compared to similar design using a cylindrical DR geometry (Chua et al., 2004). Measurement and simulation results are both in good agreement. The antenna fabricated possesses wide impedance bandwidth (>20%) and a high radiation efficiency (>85%)

8 citations

Proceedings ArticleDOI
08 Dec 2004
TL;DR: In this paper, a packaged integrated dielectric resonator antenna (DRA) concept is proposed, which results in a compact antenna structure suitable for Bluetooth or wireless applications, and the antenna design is optimized using commercial software based on finite element method.
Abstract: The objective of this paper is to propose a packaged integrated dielectric resonator antenna (DRA) concept which results in a compact antenna structure suitable for Bluetooth or wireless applications. The antenna design is optimized using commercial software based on finite element method. Measurement results are in good agreement with the simulated ones. The fabricated antenna possesses wide impedance bandwidth (13%) and high radiation efficiency (94%).

1 citations


Cited by
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Journal ArticleDOI
TL;DR: In this paper, the authors present a historical review of the research carried out on dielectric resonator antennas (DRAs) over the last three decades and highlight major research activities in each decade.
Abstract: This article presents a historical review of the research carried out on dielectric resonator antennas (DRAs) over the last three decades. Major research activities in each decade are highlighted. The current state of the art of dielectric-resonator-antenna technology is then reviewed. The achievable performance of dielectric resonator antennas designed for compactness, wide impedance bandwidth, low profiles, circular polarization, or high gain are illustrated. The latest developments in dielectric-resonator-antenna arrays and fabrication techniques are also examined.

494 citations

Journal ArticleDOI
TL;DR: Fayad et al. as discussed by the authors proposed a multiuserablebroadbanddielectricantennawith30% fractionalbandwidth, operating at 11GHz, with four different experiments.
Abstract: MULTI-FEED DIELECTRIC RESONATOR ANTENNAWITH RECONFIGURABLE RADIATION PATTERNH. Fayad and P. RecordSchoolofEngineeringandPhysicalSciencesHeriot-WattUniversityEdinburghEH144AS,Scotland,UKAbstract—Thispaperdescribesasteerablebroadbanddielectricantennawith30%fractionalbandwidth,operatingat11GHz. Thestructureconsistsofahollowcylindricaldielectricpelletofpermittivity6fedbyfourprobes.Twomethodsaredescribedforbeamforming:1-Beamforminghasbeenachievedbyindividuallyswitchingbetweenexcitedprobes. Theswitchedexcitationmechanismprovidestheantennawithareconfigurableradiationbeamthatcanbemovedintheazimuthplane. 2-Variablephaseexcitationofseveralprobes.Completeazimuthsweepwasdemonstratedbybothmethods,allowinganydesiredangleofbeamdirections. Simulationandexperimentalresultsarepresentedtoillustratetheadvantagesofbothdesigns.1. INTRODUCTIONThecommercialpressureofeverhigherdataratesandincreasesinuserdensityaredrivingtheantennadesignformobilewirelesscommunicatorstohavewide-bandresponsewithspatialability.Newerservices,suchasWiFiandultra-widebandaremovingintohigherfrequencybandstoallowgreaterchannelcapacity. FurthermoreisolationbyspatialagilityinthesamefrequencybandsmakethemsuitablecandidatesforMIMO(multipleinputmultipleoutputantennas)[1]. Asthefrequencyincreases,conductivityandsurfacewavelossesinpatchantennasincrease[2–6]. Whereasdielectricantennas,offcourse,havenoconductivitylossesanddielectriclosses.Therearearangeoflowlossdielectricmaterialsmakingthemanalternativetoconductiveantennas.DielectricResonatorantennashaveusefulpropertiessuchascompactsize[7],broadbandwidth[8,9];lowprofile[10],andhighradiationefficiency[7–11]. DRAswithnovelexcitationmechanismshavebeenreportedinliteraturetoachievewidebandwidths[12–16]. Thesedescribeantennasofdielectricmaterialmountedona

51 citations

Journal ArticleDOI
TL;DR: The achievable performance of DRAs designed for wide impedance bandwidth, low profiles, circular polarization, compactness, and high gain are illustrated and the latest techniques for improving the results are covered.
Abstract: Compact, lightweight and low cost electronics components are attracting much attention because of the rapid growth of the wireless communication systems. The antenna designers are thus in continuous search for new advanced design of miniaturized antennas. One solution is to use a dielectric resonator antenna (DRA) which provides various benefits in terms of the performance. This paper presents fundamental concepts, theory and review study carried out on DRAs. The achievable performance of DRAs designed for wide impedance bandwidth, low profiles, circular polarization, compactness, and high gain are illustrated. The latest techniques for improving the results are also covered.

28 citations

Journal ArticleDOI
TL;DR: In this paper, the design, integration and realization of system in enhanced package approach towards fully functional system level integration by using a compact Bluetooth USB dongle as the demonstrator is presented.
Abstract: The design, integration and realization of system in enhanced package approach towards fully functional system level integration by using a compact Bluetooth USB dongle as the demonstrator is presented here. The integration was done on FR4 substrates, which is totally compatible with today's printed circuit board manufacturing capability. A commercially available bluetooth integrated chip was chosen as the chipset of our demonstrator, and a package integrated antenna together with an embedded front end completes the system in package integration. The front end developed here is based on an embedded meander line combline filter and an embedded transformer balun. The filter has a 35% area reduction when compared with the classical combline filter and similar performance. The balun has the coils distributed on three layers that minimized the board area needed it and optimizes the performances. The proposed packaged integrated antenna approach is successfully demonstrated here and the new module shows excellent performance when compared with a commercial solution, surpassing the normal Bluetooth class II dongle range which is up to 10 m and increasing the module range up to 120 m without an extra power amplifier.

21 citations

Proceedings ArticleDOI
07 Dec 2005
TL;DR: In this paper, a packaged integrated rectangular dielectric resonator antenna (DRA) configuration was proposed and demonstrated the potential advantages achieved by choosing rectangular DRA geometry as compared to similar design using a cylindrical DR geometry.
Abstract: The objectives of this paper are to propose a packaged integrated rectangular dielectric resonator antenna (DRA) configuration and demonstrate the potential advantages achieved by choosing rectangular dielectric resonator geometry as compared to similar design using a cylindrical DR geometry (Chua et al., 2004). Measurement and simulation results are both in good agreement. The antenna fabricated possesses wide impedance bandwidth (>20%) and a high radiation efficiency (>85%)

8 citations