Though this consists of more numbers of dielectric blocks compared to the previous designs, it shows some added advantages like Four-element cylindrical DRA fed by a central coaxial probe.(a) Top view, (b) cross-sectional view at AA plane.įrom a practical point of view, it is easy to design the CDRA array excited with the dominant HEM11 mode than a ring resonator with mode as the latter one suffers from the inherent narrow bandwidth. In this paper, we present a new approach with a four element cylindrical dielectric array where the HEM11 mode isįig. An electric monopole-fed dielectric ring has been reported as an ultra wideband antenna in. Two broadband variants of dielectric ring resonator have recently been proposed in the form of coax-fed disc-ring and rod-ring combinations, respectively.
The narrow impedance bandwidth of the structure in was improved by introducing an air gap between the DRA and the ground plane in. The TM01 mode in coaxial feeding dielectric ring resonator was used to generate monopole-like radiation in. For monopole type radiation pattern, only a few handful investigations with DRAs are available in open literature. For DRAs with broadside radiation, different shapes and composite structures, ,
Waveport for planar antenna in cst microwave studio how to#
One major aspect of the research with DRA is how to enhance the element bandwidth as evident from survey of open literature, e.g. Some previous studies ,Īlso used four element probe-fed cylindrical DRA (CDRA) but their array elements were arranged in a conventional way and their aim was to study the broadside linearly polarized radiation with shaped directional patterns using HEM11 mode.ĭielectric resonator antennas (DRAs) have been proposed during the last two decades and significant advances are being made in developing them for many applications. KEYWORDS- Dielectric Resonator (DR) ,Dielectric resonator antenna (DRA), Impedance Band Width (IBW), Cylindrical Dielectric Resonator Antenna (CDRA), Reflection Co-efficient (S11).Įxcited in each DRA element and the composite field patterns result in a uniform monopole-like radiation pattern over a wide bandwidth. The introduced cylindrical dielectric resonator antenna (CDRA) can offer an impedance bandwidth of ~23.08% for return loss below -10dB where frequency range is from 3.57 to 4.50 and resonance frequency is 3.98GHz with monopole like radiation pattern and it is stable in the passband with a gain of 1.560dB. The simulation is performed on CST Microwave studio. In this paper the effect of design parameters such as permittivity of materials, height of probe, radius of cylinders and the arrangement of dielectric layers investigated and the excited modes are also been confirmed by simulations. CDRA is very easy to design and excited with HE11 mode excited in each CDRA by centrally placed dielectric resonator in which TM01 mode excited.
A four element cylindrical dielectric resonator antenna (CDRA) array above the ground plane is introduced here. Tech-Communication Engineering, Galgotias University, INDIA)Ībstract – The main aim to present this paper is to increase the bandwidth of the dielectric resonator antenna (DRA). Tech-Communication Engineering, Galgotias University, INDIA) 2(Assistant Professor, SEECE, Galgotias University, INDIA)ģ(M.
Vinay Kumar Prajapati 1, Amit Kumar2, Anamika3ġ(M. An Array of Four Cylindrical Dielectric Resonator Antenna for Wideband Monopole Like Radiation
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