Multi-Feed Dielectric Resonator Antenna With Reconfigurable Radiation Pattern

Fayad, H.; Record, Paul

doi:10.2528/pier07071204

Cited by 42 publications

(28 citation statements)

References 25 publications

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“…Few of the publications on the MC of DRAs analyzed the different shapes and feeding mechanism; however to the author's knowledge no published work has been reported on the level of MC between identical beam-steering DRAs of the type described in this paper. This work extends our previous work on beam steering DRAs [10][11][12][13].…”

Section: Introductionsupporting

confidence: 69%

Mutual Coupling Between a Pair of Identical Beam Steering Dielectric Resonator Antennas

Fayad¹,

Record²

2009

PIER B

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Abstract-A comparative study using numerical models on the mutual coupling (MC) between two different heterogeneous beam steering dielectric resonator antennas (DRAs) and an omni-directional dielectric resonator antenna (DRA) is presented in this paper. The mutual coupling was investigated by varying the separation between the antennas and manipulating the far field radiation pattern of each antenna. Several arrangements with element separation ranging from 0.1 to 0.5 free space wave length were investigated at the design frequency of 10 GHz. Different configurations contributed to different isolation levels. It was found that a significant isolation (< −15 dB) between an array of heterogeneous DRAs can be obtained even with antennas placed in close proximity (0.1 free space wavelength separation). It was also shown that the resonant frequency and return loss are most affected at settings where the direction of the main lobe of antenna A overlaps with the direction of the main lobe of antenna B. The expected inverse proportionality between 'd' (the separation between two antennas) and the level of MC was also demonstrated.

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Section: Introductionsupporting

confidence: 69%

Mutual Coupling Between a Pair of Identical Beam Steering Dielectric Resonator Antennas

Fayad¹,

Record²

2009

PIER B

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“…Dielectric Resonator Antennas (DRAs) are good candidates for many communication applications, because of their favorable characteristics, such as light weight, compact structure, wideband response, control of antenna dimensions with the value of dielectric constant, low metallic loss and prevention of surface wave propagation [1][2][3][4][5]. They are suitable substitutions for compact antennas, such as microstrip antennas.…”

Section: Introductionmentioning

confidence: 99%

A High Gain Dielectric Resonator Loaded Patch Antenna

Fakhte

Oraizi²,

Samiei³

2012

PIER C

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Abstract-A dielectric resonator loaded patch antenna excited by a coaxial cable is proposed in this paper. The results from measurement show a wide impedance bandwidth of 57.1% from 3.75 GHz to 6.75 GHz and a peak gain of 11.5 dB at the center of frequency band with an average gain improvement of 3 dB over the frequency band in comparison with the common dielectric resonator antennas. These results are in good agreement with those obtained by the computer simulations. A simple study of the antenna shows that the aperture size increase is the cause of gain enhancement. A theoretical model based on the simulated gain results of reference antenna and its equivalent aperture is presented for the proposed antenna structure with good agreement with simulation and measurement results. The advantages of the proposed antenna are high gain with broad bandwidth, and low fabrication cost in comparison to other types of high gain DRAs having narrow bandwidths and complex structures.

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“…The dielectric resonator antennas (DRAs) became attractive to antenna designers since about 20 years ago [1][2][3][4][5]. DRA has many advantages such as small size, low transmission loss and ease of integration with other active or passive MIC components.…”

Section: Introductionmentioning

confidence: 99%