By Topic

IEEE Transactions on Antennas and Propagation

Issue 3 • Date May 1972

Filter Results

Displaying Results 1 - 25 of 32
  • [Front cover and table of contents]

    Publication Year: 1972, Page(s): 0
    Request permission for commercial reuse | PDF file iconPDF (170 KB)
    Freely Available from IEEE
  • [Back cover]

    Publication Year: 1972, Page(s): c4
    Request permission for commercial reuse | PDF file iconPDF (778 KB)
    Freely Available from IEEE
  • Application of Hill's functions to problems of propagation in stratified media

    Publication Year: 1972, Page(s):368 - 374
    Cited by:  Papers (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (560 KB)

    A novel method of solving Maxwell's equations in a plane-stratified dielectric layer is presented, The governing differential equations for each polarization are solved in terms of Hill's functions. The formulation yields solutions which are formally exact and applicable to an extremely wide range of dielectric variations within the layer, without restriction to any particular frequency regime. Th... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The diffraction matrix for a discontinuity in curvature

    Publication Year: 1972, Page(s):326 - 333
    Cited by:  Papers (19)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (584 KB)

    To enlarge the scope of the geometrical theory of diffraction, the diffraction matrix for a surface singularity where the curvature but not the slope is discontinuous is rigorously derived. The model that is employed consists of two parabolic cylinders of different latus recta joined together at the front, thereby creating a line discontinuity of the required form. For each of the two principal po... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Reflection and transmission of electromagnetic waves obliquely incident upon a moving compressible plasma slab

    Publication Year: 1972, Page(s):398 - 400
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (296 KB)

    Reflection and transmission of electromagnetic waves by a moving compressible plasma slab is treated. Power reflection and transmission coefficients are obtained and the numerical results of the power reflection coefficient are presented for both the cases of cold plasma slab and compressible plasma slab. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Antenna synthesis and solution of inverse problems by regularization methods

    Publication Year: 1972, Page(s):268 - 274
    Cited by:  Papers (49)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (736 KB)

    Antenna pattern synthesis is discussed as an example of "improperly posed" problems. This serves the purpose of introducing a concept that is useful in many other applications: remote sensing, inverse scattering, etc. It also suggests that regulation methods that have been devised to "solve" improperly posed problems can be applied to antenna synthesis and the aforementioned problems. This gives s... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Effect of dielectric jacket on a buried travelling-wave antenna

    Publication Year: 1972, Page(s):375 - 376
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (256 KB)

    Transmission line theory has long been used to analyze the performance of dielectric-coated buried antennas. However, at UHF the ground cannot be assumed to be highly conducting and a new approach is necessary. A method is presented to predict the input impedance and pattern of a dielectric-coated traveling-wave antenna buried in lossless ground. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • VLF/ELF input impedance of an arbitrarily oriented loop antenna in a cold collisionless multicomponent magnetoplasma

    Publication Year: 1972, Page(s):394 - 398
    Cited by:  Papers (27)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (552 KB)

    A study is made of the input impedance Z of a small strip-loop antenna with arbitrary orientation in a cold collisionless uniform multicomponent magnetoplasma. Assuming a uniform current distribution, an integral expression for Z is derived which is valid for arbitrary values of driving frequency, plasma composition and dens... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Satellite altimetry using ocean backscatter

    Publication Year: 1972, Page(s):295 - 309
    Cited by:  Papers (27)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1416 KB)

    A model for the signal received when satellite altimetry pulses are scattered back by the ocean's surface is postulated and analyzed. The second-order statistics of the complex nonstationary random process appearing at the detector input are graphically and analytically displayed as a function of the sea state. The standard deviation of various altitude estimates derived by subsequent operations o... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Reduction of reradiated field in equatorial plane of parasitic antenna

    Publication Year: 1972, Page(s):376 - 379
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (392 KB)

    A suitable impedance connected at the center of a parasitic dipole or the base of a monopole antenna can reduce to zero the reradiated field in the equatorial plane. The two-term theory provides a simple formula for the determination of the required impedance for dipole elements up to 1.25 wavelengths long or monopoles up to 0.625\lambda . Examples and table... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Scattering from a perfectly conducting sinusoidal surface

    Publication Year: 1972, Page(s):388 - 390
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (272 KB)

    Based on the Rayleigh assumption, perturbation solution for the analysis of scattering from a perfectly conducting sinusoidal surface is further developed. Amplitudes of scattering waves of the first few leading terms have been analytically derived; among them, the third-order term has so far not been available in other literature. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Radio wave propagation over a rough variable impedance boundary: Part I--Full-wave analysis

    Publication Year: 1972, Page(s):354 - 362
    Cited by:  Papers (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (704 KB)

    A full-wave solution is developed for problems of radio wave propagation over rough surfaces characterized by variable impedance and height parameters. The analysis, which is suitable for problems involving both the radiation fields as well as the ground waves, is compared with earlier solutions to these problems. The full-wave solutions which satisfy the exact boundary conditions are shown to be ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Linear array and feed network performance in a reentry plasma environment

    Publication Year: 1972, Page(s):340 - 346
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (680 KB)

    The performance of a linear array of rectangular slots in a ground plane, covered with an inhomogeneous dielectric or plasma layer, is analyzed. The self and mutual admittances of the slots and the element radiation pattern are formulated for a given array configuration and external environment. The characteristics of the array are then determined for different types of feed networks. Traveling wa... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Dipole antenna in space-time periodic media

    Publication Year: 1972, Page(s):280 - 287
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (576 KB)

    The problem of dipole radiation in sinusoidally spacetime periodic media is studied and solved. The space-time periodicity can be considered as due to a strong pump wave and is expressed as a traveling-wave type change in the dielectric constant or the plasma density (i.e., \epsilon(z,t) = \epsilon_{0}\epsilon_{r}[1 + \epsilon_{1} \cos (Kz - \Omega t)] and <... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A transform solution for the fields from a current element

    Publication Year: 1972, Page(s):379 - 380
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (208 KB)

    A new but general method of solution applicable to any radiation problem which can be reduced to an inhomogeneous wave equation for an arbitrary source in a given medium is used to solve for the vector potential of an infinitesimal dipole radiating in free space. The solution of this simple problem yields insight into the use of this method for the solution of more complicated problems. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Numerical analysis of electromagnetic radiation properties of smooth conducting bodies of arbitrary shape

    Publication Year: 1972, Page(s):383 - 388
    Cited by:  Papers (24)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (616 KB)

    A numerical-theoretical technique is described for determining the surface current density distribution and subsequently the near- and far-zone fields of an arbitrarily shaped perfectly conducting body excited by an arbitrary primary source. The arbitrary surface is described by dividing it into a number of connected cells which are mathematically described as quadric surfaces. The "arbitrary body... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Spatial sampling and filtering in near-field measurements

    Publication Year: 1972, Page(s):253 - 261
    Cited by:  Papers (78)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (952 KB)

    A sample spacing criterion and a data minimization technique for measurements made over the surface of a plane in the near field of an antenna are presented. The sample spacing is shown to depend on the distance from the antenna to the measurement plane, and on the extent to which evanescent waves can be neglected. The near-field data minimization technique utilizes two-dimensional spatial filteri... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Radio wave propagation over a rough variable impedance boundary: Part II--Application of full-wave analysis

    Publication Year: 1972, Page(s):362 - 368
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (520 KB)

    The full-wave analysis developed in Part I is applied to three classes of problems of propagation over nonuniform boundaries and the results are then compared with earlier solutions to these problems. The problems considered are: 1) the effects of rapid surface impedance variations on ground wave propagation; 2) the propagation over periodic structures; 3) the scattering by boundaries with random ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Probe-triggered audiofrequency plasma oscillations

    Publication Year: 1972, Page(s):400 - 402
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (400 KB)

    Coherent sinusoidal oscillations have been observed in a magnetized dc gas discharge in neon. The oscillations have frequencies from 70 Hz to 7 kHz and are triggered by a small dc bias on a wire probe immersed in the discharge. The oscillation period is proportional to the cube of the applied magnetic field and inversely proportional to the cube root of the discharge current. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Pulse excitation of a travelling wave array

    Publication Year: 1972, Page(s):239 - 244
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (512 KB)

    High-resolution radar becomes limited by the feeding mechanism in traveling wave antennas, forcing the design to some form of corporate feed. A spectral method of solving this problem is introduced which conveniently handles any transmitter pulse shape or receiver bandpass. The equivalence between this approach and an older transient solution is established. The method is applied to a uniform and ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • An experimental and theoretical study on the circuit properties of a cylindrical antenna in a hot lossy plasma

    Publication Year: 1972, Page(s):347 - 353
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (624 KB)

    Experimental results on the input impedances and the current distributions of cylindrical antennas of various lengths in a large volume of hot lossy plasma are presented. A relatively simple theory based on an integral equation and a grid antenna model is developed. The theoretical results are in good qualitative agreement with the experiments. The theory is also compared to theories of some other... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The John T. Bolljahn Memorial Award lecture: A bit of personal history

    Publication Year: 1972, Page(s):233 - 238
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (752 KB)

    Prepares a paper on the highlights of author's contributions to the fields of antennas and propagation for presentation at the joint session of the Professional Group on Antennas and Propagation and US National Committee of International Scientific Radio Union (URSI) View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • On the reflection of light from an inhomogeneous shell

    Publication Year: 1972, Page(s):390 - 392
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (312 KB)

    The main contribution to the reflected field from a radially inhomogeneous spherical shell is determined. It is shown that it is much smaller in amplitude than the field reflected by a perfectly conducting sphere coated with the same type of radially inhomogeneous dielectric. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A comparative study of the Rayleigh hypothesis and analytic continuation methods as applied to sinusoidal gratings

    Publication Year: 1972, Page(s):392 - 394
    Cited by:  Papers (17)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (360 KB)

    Two methods are investigated for solving the problem of plane-wave diffraction by gratings with sinusoidal profiles. The first is based on an extension of the Rayleigh hypothesis, and the second employs an analytic continuation technique for computing the field in regions in which the Rayleigh hypothesis breaks down. Some numerical results are presented to compare the two methods. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Transient radiation field of a circular loop antenna

    Publication Year: 1972, Page(s):380 - 383
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (416 KB)

    For a circular loop antenna excited by a frequency-hand-limited rectangular voltage pulse, the time variation of the electric field at remote points in various directions has been computed. The computations are for a loop of radius b made from wire of radius a , for which the thickness parameter View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.

Aims & Scope

IEEE Transactions on Antennas and Propagation includes theoretical and experimental advances in antennas.

Full Aims & Scope

Meet Our Editors

Editor-in-Chief                                                 Kwok W. Leung