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A Cuboid Dielectric Resonator Antenna fed by microstrip feed line is studied. The dielectric resonator of the antenna is made by a material with high dielectric constant ∊r=30. The impedance matching of dielectric resonator can be improved by using a # slot in the ground. In additional, a two elements array is used to enhance the performance of the antenna. This proposed antenna is suitable for long-term...
We present our latest advances in antenna miniaturization using dielectric resonators and design of sparse arrays for ultra-wide band applications without the need for non-linear numerical optimization. We experimentally demonstrate a dual-feed, low-profile, stacked dielectric resonator antenna for the C band with wide bandwidth and high gain, as well as a bio-inspired sparse array design for ultra-wide...
This paper presents the findings of a steerable higher order mode (TE$^{\mathrm {y}}_{1\delta 3}$ ) dielectric resonator antenna with parasitic elements. The beam steering was successfully achieved by switching the termination capacitor on the parasitic element. In this light, all of the dielectric resonator antennas (DRAs) have the same dielectric permittivity similar to that of ten and excited...
In this paper, a V-band low sidelobe and wideband series fed linear dielectric resonator antenna (DRA) array is proposed. Among many kinds of DRAs, the perforated rectangular dielectric resonator antenna (RDRA) is chosen as the antenna element in our design, which can enhance the impedance bandwidth by lowering down the quality factor. By optimizing the size of the slots and distance between adjacent...
In this paper, the design of aperture-couplet rectangular dielectric resonator antennas arrays is illustrated. The effect of slot feed on the dielectric resonator antenna (DRA) and the effect of the spacing between array elements is observed. This paperwork can be useful for WLAN applications with the operating frequency 5.8 GHz.
The design of a millimeter-wave (mm-wave) dielectric resonator (DR) multiple-input-multiple-output (MIMO) antenna system is presented. The MIMO structure consists of four arrays each radiating in one of four opposite directions. Each array is composed of four cylindrical DR antenna elements (cDRAs) operating at 30 GHz with a fractional bandwidth of at least 6.7%. The elements are fed via slot coupling...
The design of a wideband aperture coupled log periodic dielectric resonator antenna array is investigated for X band application. Aperture coupled feeding is used in this design to minimize losses. The proposed design uses five cylindrical elements and shows a wide bandwidth of about 36%, covering the frequency range 9.23 GHz to 13.23 GHz with a peak gain of 9.28 dBi. Parametric study for bandwidths...
A millimeter-wave (mm-wave) dielectric resonator (DR) based, multiple-input-multiple-output (MIMO) linear antenna array is presented. The array elements are cylindrical DR antennas (cDRAs) operating at 30 GHz with a bandwidth of at least 2 GHz. The MIMO antenna system consists of two, four-element arrays, each with a fixed beam direction which is electronically tilted to provide low field correlation...
In this paper, a triple-band pentagonal dielectric resonator antenna (DRA) array is presented for X-Band applications. Here, two pentagonal dielectric resonators are used as an array. The DRA array is excited by conformal strip connected to micro strip line which is an effective feed mechanism to obtain triple-band operation. Simulation process was done by using a CST microwave studio.
60-GHz millimeter wave communication systems usually require high gain and high efficiency antennas. Based upon these specific needs, a novel SIW horn antenna is designed for high gain and high efficiency applications. The horn antenna is integrated in four-layer substrate and fed by a SIW transition line. The numerical simulated 10dB bandwidth is over 8-GHz, covering the frequency range of 57-GHz∼65-GHz...
A pattern reconfigurable antenna array with series-feeding slots for broadening the bandwidth is proposed in this paper. There are four operating modes for the proposed antenna array by controlling the on-off states of the PIN diodes, which are embedded in the branches on the top board of the antenna. The measured results show that the return loss is better than −10 dB over 2.04 – 2.38 GHz at all...
A 1 × 3 element linear array of cylindrical dielectric resonator antenna (CDRA) is designed and presented for 802.11a WLAN system applications. The two elements of CDRA array are excited by rectangular shaped aperture slots placed on the ground plane, while the slots themselves are excited through the microstrip line. The third element (i.e., central CDRA) is excited through the mutual coupling of...
A design of a 4×4 dielectric resonator (DR) microstrip patch array antenna with a 50 Ω microstrip transmission line feed is presented. The antenna was designed to operate at the Worldwide interoperability for Microwave Access (WiMAX) application. The proposed DR utilized a ceramic material, Barium Strontium Titanate (BST) in rectangular form, with high dielectric constant of 15. Simulations using...
The design of antennas for compact multiple-input multiple-output (MIMO) terminals is a challenging feat, due to the space constraint and the physical structure of the terminal. The space constraint forces the antennas to be closely spaced, which degrades MIMO performance due to high signal correlation and low antenna efficiency. Moreover, the terminals are equipped with ground planes which further...
In this paper, a portable Dielectric Resonator Antenna design with broadside radiation using Advanced Design System (ADS) is presented. The total volume of the antenna is reduced and impedance matching for a wide bandwidth are obtained by using a solid rectangular dielectric resonator mounted on a vertical ground plane edge instead of perpendicular ground plane edge. To improve the impedance matching...
The main objective of the present study is to improve the bandwidth of the dielectric resonator antenna (DRA). A new three-element multilayer cylindrical dielectric resonator antenna (MCDRA) array above the ground plane is proposed here. MCDRA is easy to design and excited with HE11dδ mode excited in each MCDRA by centrally placed dielectric resonator in which TM01dδ mode excited...
In this paper, a multilayer CP-DRA(Circularly Polarized Dielectric Resonator Antenna) using-slot-feed is studied to enhance gain and axial ratio bandwidth. First, a single layer CP-DRA is studied as a reference for comparison. Then a new type of multilayer CP-DRA is proposed to enhance the gain and axial ratio bandwidth. In consideration of the antenna gain enhancement, the spacing between the elements...
A wideband (4.94-6.959 GHz) four element rectangular dielectric resonator antenna array has been designed for 5.0 GHz WLAN and WiMAX band and its radiation characteristics determined through simulation studies using CST Microwave Studio software. Further, simulation results for power absorption in a homogenous bio-medium (muscle layer) in direct contact with the proposed antenna array is presented...
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