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Abstract: Tapered dielectric rod antennas of rectangular cross section are developed for possible application in millimeter-wave dielectric integrated circuits. Design principles for a maximum gain design are described, and an example is given. Experimental results for antennas designed for low sidelobes and for maximum gain are presented.
Get Price2006-1-1 · Request PDF | Tapered Dielectric Rod Antenna | The numerical results of a theoretical model for a tapered rode excited by the dominant HE11 mode are compared to experimental measurements.
Get PriceNiver E. (2006) Tapered Dielectric Rod Antenna. In: Göknar İ.C., Sevgi L. (eds) Complex Computing-Networks. Springer Proceedings in Physics, vol 104. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-30636-6_12. DOI https://doi.org/10.1007/3-540-30636-6_12; Publisher Name Springer, Berlin, Heidelberg; Print ISBN 978-3-540-30635-1
Get Price2013-6-8 · dielectric rod, inserted into the metal guide, to a point. The portion of the dielectric rod radiating into space is given a small taper to obtain matching between the dielectric rod and surrounding space. In the present work, Nylon tapered dielectric rod antennas are fabricated for a length of 6λ0 with different taper angles. The dielectric rod antenna is designed to
Get Price2001-7-1 · The ultra-wide bandwidth dielectric rod antenna developed by Chen et al. (accepted for publication) utilizes a circular dielectric cylinder made of homogeneous material to guide the electromagnetic energy using the fundamental hybrid mode. The electromagnetic radiation was then generated by removing the guiding structure in the end taper section where the diameter was …
Get Price2002-3-27 · 2. Tapered-permittivity dielectric rod antenna 170 171 The ultra-wide bandwidth dielectric rod antenna 172 developed by Chen et al. accepted for publicationŽ.173 utilizes a circular dielectric cylinder made of homo-174 geneous material to guide the electromagnetic energy
Get Price2014-8-9 · 2.1 Radiation Mechanisms of the Dielectric Rod Antenna The dielectric rod antenna belongs to the family of surface wave antennas. The propagation mechanisms of surface waves along a dielectric and/or magnetic rod are explained in Appendices A and B. The hybrid HE 11 mode (Fig. B.2) is the dominant surface wave mode and is used most often with dielectric rod antennas. The higher, …
Get Price2013-7-11 · exciting the dielectric rod in HE 11 mode, and the determination of diameter, length, and taper angle of the rod [6]. The dielectric rod antennas are tapered until the impedance of the antenna becomes equal to that of free space. Tapering the rod minimizes reflections at the free end of the rod.
Get Price2009-11-12 · It is well known that the gain of a dielectric rod antenna saturates with an increase in the rod length, and that the further increase results in a periodic variation of the gain,. Although a tapered configuration can be used to overcome this problem, we need fine control of the tapered configuration. Another configuration of enhancing the gain (a so-called Dash-Hollow rod) has been proposed by Sueta et al., in which a dielectric rod is periodically covered with metals. However, a theoretical study has not been carried out until the present time. In this paper, we analyze the Dash-Hollow rod antenna …
Get Price2013-5-17 · is used to analyze the tapered dielectric rod antenna. The method uses a local mode theory to determine the appropriate basis function for the polarization current distribution in the dielectric region and, after applying the method of moments, utilizes the equivalence principle to calculate the far-field
Get Price2002-3-27 · 2. Tapered-permittivity dielectric rod antenna 170 171 The ultra-wide bandwidth dielectric rod antenna 172 developed by Chen et al. accepted for publicationŽ.173 utilizes a circular dielectric cylinder made of homo-174 geneous material to guide the electromagnetic energy
Get Price2013-7-11 · exciting the dielectric rod in HE 11 mode, and the determination of diameter, length, and taper angle of the rod [6]. The dielectric rod antennas are tapered until the impedance of the antenna becomes equal to that of free space. Tapering the rod minimizes reflections at the free end of the rod.
Get Price2001-7-1 · A new broadband dielectric rod antenna with a tapered-permittivity radiation head was presented. The original constant-permittivity taper design works well for low-permittivity rod. However, it faces a potential dispersion problem for high-permittivity rod due to the requirement of a long taper length.
Get PriceA. Prabhakar, “Radiation from the Tapered Dielectric Rod Antenna,” M.Sc. Thesis, New Jersey Institute of Technology, 1993 Google Scholar [8] G. Pietrangelo, “Design of a HE 11 to TE 11 Mode Convertor,” Senior Project, New Jersey Institute of Technology, 1989.and J. D. Love, Optical Waveguide Theory, Chapman and Hall Ltd., London, 1983 ...
Get Price2013-6-8 · Radiation from Tapered Nylon rod antenna The radiation from a dielectric rod antenna mainly depends on the dielectric material used to fabricate the antenna, physical shape of the antenna, and the method of excitation of the antenna. The dielectric rod antenna is excited in the hybrid HE 11 mode. The advantage of asymmetric HE
Get Price2019-3-1 · A double-layer, dielectric rod probe antenna design was developed as a near-field probe with a bandwidth of about 4:1. Using a two-layer dielectric rod avoids the excitation of higher order modes. Proper selection of radii and dielectric constants of each layer in conjunction with a properly tapered radiation tip ensure wider bandwidth .
Get Price2009-11-12 · along the image NRD guide area. The dielectric rod is extruded from the end of the guide into the free space to form a rod antenna. The antenna has the length of d, and is tapered linearly in only the yz-plane. A transition from the image NRD guide to the rod antenna is formed with linearly tapered parallel plates and image plane.
Get Price2019-7-31 · Design of Rectangular Rod Antennas. e structure of a tapered rectangular dielectric rod antenna is shown in Figure ( b). e bottom diameters are 1 and 1,thetop diameters are 2 and 2, and the length of the antenna is . For rectangular dielectric rod antenna, the bottom dimensions should satisfy the following condition [] : 1 2 1 1 < 1 1 < 1 1 ,
Get Price2019-2-4 · Abstract: A novel antenna integrated the advantages of the Yagi-Uda and the dielectric rod antenna (DRA) is presented in this communication. The antenna mainly consists of a tapered printed Yagi-Uda, a tapered dielectric cover, and a periodic dielectric rod. First, a tapered printed Yagi is designed as the primary feeder and embedded inside a tapered dielectric rod to improve the directive ...
Get Price2020-4-27 · In this study, a broadband and high gain dielectric-rod end-fire antenna are proposed for applications on both the K and Ka bands. By employing the double-ridged waveguide (DRW) feeding structure which is composed of a coaxial line to tapered DRW transition, a parabolic tapered DRW, and a parabolic-tapered flared parallel waveguide section, the impedance bandwidth of this proposed antenna …
Get Price2013-6-8 · Radiation from Tapered Nylon rod antenna The radiation from a dielectric rod antenna mainly depends on the dielectric material used to fabricate the antenna, physical shape of the antenna, and the method of excitation of the antenna. The dielectric rod antenna is excited in the hybrid HE 11 mode. The advantage of asymmetric HE
Get Priceadshelp[at]cfa.harvard.edu The ADS is operated by the Smithsonian Astrophysical Observatory under NASA Cooperative Agreement NNX16AC86A
Get Price2013-7-11 · exciting the dielectric rod in HE 11 mode, and the determination of diameter, length, and taper angle of the rod [6]. The dielectric rod antennas are tapered until the impedance of the antenna becomes equal to that of free space. Tapering the rod minimizes reflections at the free end of the rod.
Get PriceA new dielectric rod antenna design modified from its previous version developed by Chen [IEEE Trans. Geosci. Remote Sens. (accepted for publication)] is presented. Such an antenna is useful in detecting small and shallow subsurface objects with excellent depth and spatial resolutions. These features make it useful in detecting small anti-personnel (AP) mines, pavement cracks and the surface ...
Get Price2020-10-22 · 1. Render of optimal dielectric rod antenna array and feed. Visible in this image from left to right are the photonic crystal waveguide, flaring section, effective medium, and tapered rod array. All the dimensions are given in thesupplementary material. waveguide is less than 0.1 dB/cm. In order to feed an array of dielectric rod antennas ...
Get Price2017-12-17 · Figure 3. Dielectric rod wave guide antenna. Figure 4. Return Loss Dielectric rod wave guide antenna at 94GHz. 3. DRW ANTENNA DESIGN AND MEASUREMENTS A modifled version of the tapered DRW antenna is shown in Fig. 3. The antenna is built of a 7‚ long (at Centre frequency 94GHz) tapered dielectric rod and a conventional metallic waveguide (WR ...
Get Price2016-11-4 · constants which depend on the dielectric constant B,. Most dielectric antennas are operated under the Fig. 4-0ptimization sequence for direct waveguide launching in respect oftechniques of:(a)rectangular launching; (b)tapered launching; (c) A./4 step; (d) optimized polymer circular rod antenna; and (e)optimized dielectric rectangular antenna (The
Get Price2013-5-17 · tapered dielectric wedge [13] and tapered rod antenna [14]. However, the result in [13] is only in two-dimension and the analysis in [14] is very brief with no details. In this paper, a simplified semi-rigorous approach to the analysis of tapered dielectric antennas is proposed and applied to the dielectric rod configuration of Fig. 1.
Get PriceThe optimum microwave dielectric properties are obtained as follows: ε r = 8.45, Qf = 134,050 GHz, τ f =–135 ppm/°C. A microstrip patch antenna is designed and fabricated using LiF ceramics as the substrate. The antenna resonates at the frequency of 6.81 GHz, exhibits an S11 of –20.3 dB and a –10 dB bandwidth of 148 MHz.
Get PriceExperimental results are presented for several types of tapered dielectric rod antennas of rectangular cross section investigated at 81.5 GHz. The antennas are based on Zucker's (1961) design principles for low sidelobes and maximum gain adapted to rods of rectangular cross section. The gain and beamwidth plots for the antennas tested are shown.
Get PriceIEEE Transactions on Antennas and Propagation. The optimum design of the tapered slot antenna (TSA) profile and geometry is achieved through its modeling by a stepline terminated in free space intrinsic impedance. The impedance matching of the TSA input impedance (obtained by the transmission matrix properties) to the generator impedance is ...
Get Price2017-7-11 · Abstract: Dielectric rod antennas are promising candidates to be used in millimeter wave band wireless communications. The optimization of a patch-fed dielectric rod antenna design at millimeter wave band is presented in this work. This design is composed of simple dielectric rod antenna made of low cost Teflon with relative permittivity of 2.1 that is fed by a rectangular patch antenna.
Get PriceIn this paper, a two-element step-tapered rod antenna array for millimeter waves is designed and analyzed. It is easier to fabricate than pyramidal-prismatic tapers antenna, and has potential applications in millimeter waves and terahertz dielectric integrated circuits.
Get Price2013-5-17 · tapered dielectric wedge [13] and tapered rod antenna [14]. However, the result in [13] is only in two-dimension and the analysis in [14] is very brief with no details. In this paper, a simplified semi-rigorous approach to the analysis of tapered dielectric antennas is proposed and applied to the dielectric rod configuration of Fig. 1.
Get Price2021-3-1 · 10 GHz Dielectric Rod Antenna Author: Serge Y. Stroobandt Subject: An X-band dielectric rod antenna with 20.5 dBi gain, made out of plastic and similar ti the rod and cones of the retina. Also: The insect facet eye presented as an optical phased array antenna with electronic focus beam steering. Created Date: 20210301194642Z
Get Pricedielectric rod antenna is described and validated through mea-surements. The manufactured 60-GHz dielectric rod antenna has the predicted gain of around 15 dBi and supports dual circular polarization. The lateral dimension of the rod antenna is very small in comparison to its …
Get PriceThe gains of tapered dielectric rod antennas are determined primarily by their length. However, long tapered rods are difficult to realise and arrays of these antennas are needed if much higher gain is required. In the paper, a linear array of dielectric rod antennas is proposed based on an image NRD guide which employs a slotted rectangular waveguide feed.
Get Price2017-3-21 · calculate the radiation from tapered dielectric rod antenna. This efficient approxi-mate model consumes much less computing resources and time, and demonstrates good agreements with full-wave numerical results. It supplies a quantitative way
Get PriceIEEE Transactions on Antennas and Propagation. The optimum design of the tapered slot antenna (TSA) profile and geometry is achieved through its modeling by a stepline terminated in free space intrinsic impedance. The impedance matching of the TSA input impedance (obtained by the transmission matrix properties) to the generator impedance is ...
Get PriceEndfire-tapered slot antennas are suitable for many integrated circuit applications, imaging and phased arrays. An investigation of single elements of such antennas, including slots which are exponentially tapered (Vivaldi), linearly tapered, and constant width. For antennas of all types, a good general agreement is obtained for curves of beamwidth-versus-length, normalized to wavelength, when ...
Get PriceIn this paper, a two-element step-tapered rod antenna array for millimeter waves is designed and analyzed. It is easier to fabricate than pyramidal-prismatic tapers antenna, and has potential applications in millimeter waves and terahertz dielectric integrated circuits.
Get Price2010-7-16 · Endfire antenna elements of the tapered slot antenna (TSA) type can be employed both as single elements and in arrays. TSAs utilize a tapered slot in the metalization on a thin dielectric substrate, to radiate in the 'end-fire' direction (along the tapered slot, see Figure 1). The special case of air dielectric also has been investigated.
Get PriceKeywords: rod antenna, polyrod antenna, dielectric antenna, tapered rod, circular rod, dielectric horn, conformal antenna, switched-beam array, multibeam, travelling wave, end-fire, antenna ... the tapered dielectric rod with a cylindrical section. ..... 21 Figure 2.4. Electric field (E-field) for the HE 11 mode in ...
Get Price2018-7-2 · A dielectric rod antenna is small in diameter but long in wavelengths. The dielectric rod is often tapered to a point, which makes it an end-fire element with gain. You may be right, it depends on where you draw the line, metallic conduction, guided or a spherical wave. tech99 said:
Get Price2019-12-26 · Abstract—In this paper, a rectangular dielectric rod antenna fed by an air-substrate parallel strip line is proposed. The dielectric rod has a compact and regular structure, which is easy to fabricate. The matching of the antenna is mainly determined by the …
Get PriceThe Vivaldi antenna and its feeding transition is investigated. A tapered transition from microstrip to symmetric double sided slot line, fabricated on a low dielectric constant substrate, exhibits a very wide operating frequency range, with no need for a shorting hole. The parameters of the antenna which influence the constancy of beamwidth with frequency are discussed, and the ability to ...
Get Price2019-6-6 · Nanoantenna structure incorporates an antenna layer, a dielectric standoff layer, and a ground plane as in figure 6. The standoff layer serves as an optical resonance cavity. The nanoantenna to ground plane separation acts as a transmission line that enhances resonance. The thickness of the standoff layer is selected to be a ¼ wavelength to
Get Price2017-9-5 · Achieving Optimum Radio Range 2.4 Friis-Equation This section addresses the theory used to determine the range for radio systems in open and free space environments. Range in radio communication is generally described by Friis (see Equation 5). (5) • PR: Power available from receiving antenna • PT: Power supplied to the transmitting antenna
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