1 edition of Computation of monopole antenna currents using cylindrical harmonic expansions found in the catalog.
Computation of monopole antenna currents using cylindrical harmonic expansions
Robert C. Hurley
by Naval Postgraduate School, Available from the National Technical Information Service in Monterey, Calif, Springfield, Va
Written in English
|Contributions||Morgan, Michael A.|
|The Physical Object|
|Number of Pages||115|
A half-wave dipole antenna receiving power from a radio wave. The electric field of the wave (E, green arrows) pushes the electrons in the antenna elements back and forth (black arrows), charging the ends of the antenna alternately positive and the antenna is a half-wavelength long at the radio wave's frequency, it excites standing waves of voltage (V, red bands) and current in IEEE TRANSACTIONS ON ELECTROMAGNETIC COMPATIBILITY, VOL. 40, NO. 2, MAY A Quasi-Static Tool for the EMI/EMC Analysis of Analog Circuits: Parasitic Extractor Tool and Simulator of EMI Parameters (PET SEP) S. Piedra, J. E › 百度文库 › 语言/资格考试.
Modal Expansions of Fields Currents in Waveguides Apertures in Ground planes Plane current sheets Chapter 6. Cylindrical Wave Fu The Wave Functions, The Circular Waveguide 20 Radial Waveguides The A new CPW-feed miniaturized dual-band monopole antenna using spiral matching resonators. Djaiz, A A combination method for the spectral domain system matrix computation of larger microwave structures with thin layer environments Electrical and mechanical uncertainty study in cylindrical near field antenna measurement systems. Burgos, S :CN
monopole antennas Melvin M. Weiner Provides a stimulating discussion of the modeling, testing, and application of monopole antennas in free space and in proximity to flat earth—including new topics on propagation, tuning stability, antenna range design, noise, ground-based high-frequency arrays, and electrically small :// The quarter-wave monopole antenna is a single-element antenna fed at one end, that behaves as a dipole antenna. It is formed by a conductor in length, fed in the lower end, which is near a conductive surface which works as a reflector (see effect of ground) and is an example of a Marconi current in the reflected image has the same direction and phase as the current in the real ?FindGo=Dipole antenna.
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The monopole exhibits azimuthal symmetry about the z-axis and, in reality, can be solved in two dimensions using cylindrical harmonic expansions , or by using integral equation methods [23 Calhoun: The NPS Institutional Archive Theses and Dissertations Thesis Collection Computation of monopole antenna currents using cylindrical harmonic :// This thesis investigates the viability of a new method for numerically computing the input impedance and the currents on simple antenna structures.
This technique considers the antenna between two ground planes and uses multiregion cylindrical harmonic expansions with tangential field continuity to obtain the surface currents and input :// .7H/abstract.
A novel method for computing the input impedance and induced currents on cylindrical antenna structures is investigated. This technique considers the antenna when placed between two parallel ground planes, thus allowing the use of cylindrical harmonic Fourier expansions to represent the fields.
Enforcement of boundary and continuity conditions on the tangential field components results in M/abstract. Computation of monopole antenna currents using cylindrical harmonic expansions. This technique considers the antenna between two ground planes and uses multiregion cylindrical harmonic expansions with tangential field continuity to obtain the surface currents and input impedance.
The computed results are compared to the results obtained Computation of Monopole Antenna Currents Using Cylindrical Harmonic Expansions by Robert C. Hurley Lieutenant, United States Navy B.S.E.E, University of Missouri, Submitted in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE IN ELECTRICAL ENGINEERING from the NAVAL POSTGRADUATE SCHOOL December Author: 2 In order to evaluate the induced currents on the surface of a cylindrical monopole antenna located over a perfectly electric conducting ground plane using cylindrical harmonics, three kinds of In this paper, a modal expansion technique is used to numerically evaluate the impedance characteristics of the monopole by modeling the fields between the plates using cylindrical harmonic :// INY.
Rahmat-Samii and R. Mittra, Integral Equation Solution and RCS Computation of a Thin Rectangular Plate, University of Illinois. INP. Barnes, On the Response of an Infinitely Long, Perfectly Conducting, Cylindrical Antenna to an Electromagnetic Plane Wave Pulse, Oak Ridge National Electromagnetic Waves and Antennas Sophocles J.
Orfanidis ECE Department Rutgers University 94 Brett Road Piscataway, NJ Tel: ~orfanidi/ewa. A monopole antenna in front of a conducting cylinder is analyzed by the modal-expansion method and scattering matrix method. An infinite perfectly conducting plate is introduced at the top of the A modal expansion technique is used to model the induced currents over the monopole surface, and fields in the region of interest are characterized by cylindrical harmonic :// Abstract—We present a monopole antenna for optical frequen-cies ( THz) and discuss near-field measurements with single fluorescent molecules as a technique to characterize such antennas.
The similarities and differences between near-field antenna mea-surements at optical and radio frequencies are discussed in ?cid= generation by pipe ﬂows, and with respect to more advanced theory on modal expansions and approx-imation methods.
This particular choice is motivated by industrial applications like aircraft engines and gas transport systems. This course is inspired by the book of Dowling and Ffowcs Williams: “Sound and Sources of Sound” .~sjoerdr/papers/ () Nonuniform currents on a wedge illuminated by a TE plane wave.
IEEE Transactions on Antennas and Propagation() Elimination of infinities in equivalent edge currents, part I: Fringe current :// High-Gain Omni-Directional Antenna Using A Freeformed Cylindrical Cavity For High Data-Rate Short Range Communications At Millimetre-Wave Bands.
nameOfConference DOI: / Home; Random; Nearby; Log in; Settings; About Wikipedia; Disclaimers The sphere as an antenna shape has interested electromagneticians for decades. It has been proposed for dipoles and monopoles, and as a form for winding various coil antennas.
Like the fat cylindrical monopole, feeding a hemisphere is problematic and I've never seen one in :// antenna impedance calculations using the finite difference time domain method j.
munk» fdtd analysis of a monopole antenna on circular dielectric loaded ground plane s. raffaelli, l. borselli, m. leoncini, s. maci, ps. kildal» simple boundary conditions for plane wave scattering problems using fd-td method v.
volpi» Multiband planar branched monopole antenna for GSM/GPS/WLAN/WiMAX applications. Yousuf, Shahnawaz / Tlili, Boutheina | A novel triple-band cylindrical dielectric resonator antenna using varying permittivity in ϕ-direction.
Chaudhary, Dual band antenna using the substrate integrated waveguide as an Epsilon Negative transmission ://:doi~. In this paper, we presented a compact monopole antenna for UWB communications.
It has been demonstrated that the proposed antenna can yield an UWB bandwidth of return loss less than −10 dB, from 3GHz to GHz covering the frequency band for most UWB communication ://:doi~%2FAPS/Study-a-compact. The comparison of numerical and measured reflected voltages in the coaxial line for a cylindrical monopole antenna excited by a 1-V Gaussian pulse.
62 IEEE packages for the various stages of geometry modeling, mesh generation, and field › 百度文库 › 互联网. In the case of a grounded monopole antenna, then the electric field associated with the charge carriers flowing within the two conductors does three things.
1) As with the ideal dipole antenna, a portion of the generated E-field in conjunction with the associated magnetic field &a_htm.