By Topic

Microwave and Millimeter Wave Technology Proceedings, 1998. ICMMT '98. 1998 International Conference on

Date 18-20 Aug. 1998

Filter Results

Displaying Results 1 - 25 of 267
  • ICMMT'98. 1998 International Conference on Microwave and Millimeter Wave Technology. Proceedings (Cat. No.98EX106)

    Publication Year: 1998
    Request permission for commercial reuse | PDF file iconPDF (968 KB)
    Freely Available from IEEE
  • Discussion on rated average power of double-ridged corrugated waveguide

    Publication Year: 1998, Page(s):921 - 924
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (237 KB)

    The average power of superwide-band corrugated waveguide, i.e. double-ridged corrugated waveguide are discussed here. The rated average power is one of the three major parameters for expressing electrical performance of transmission lines. Consequently, the rated average power both of types JRS 3500 and JRS 7500 corrugated waveguides are analyzed, and the relationship between average power and the... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Software implement of EMC analysis and design for electric system

    Publication Year: 1998, Page(s):1076 - 1078
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (167 KB)

    In this paper, a software implementation of EMC analysis and design for electric systems is discussed. In a common sense, the EMC analysis uses s stepwise-filtering method, which can be split into two parts: the computing part and the management part. Using computer software the managing can be implemented part in common appearance; the computing part can be modified based on factual instance. An ... View full abstract»

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

    Publication Year: 1998, Page(s):1095 - 1104
    Request permission for commercial reuse | PDF file iconPDF (382 KB)
    Freely Available from IEEE
  • The leakage and radiation characteristics of conductor-backed coplanar waveguide

    Publication Year: 1998, Page(s):861 - 864
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (228 KB)

    From the analysis in full wave SDA, the leakage effect can be controlled by the thickness, dielectric constant of the substrate and the slot width of the CPW line, that is a structure of the circuit on a layer conductor-backed substrate and below a layer superstrate. Under the non-leakage condition, the characteristic impedance is sensitive to the strip width and it will drop before slot width rea... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The coupler and coupled unilateral fin line

    Publication Year: 1998, Page(s):869 - 872
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (216 KB)

    Computer programs are developed to be used in graduate and undergraduate courses. The theory and numerical results were presented for the unilateral fin lines and coupler with semiconductor substrate. The full wave analysis of the transverse transmission line method-TTL-in the FDT was used for determination of the electric and magnetic fields in all dielectric regions. The results were presented a... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Linear theory of electromagnetic wave generation in a magnetized plasma-filled backward wave oscillator

    Publication Year: 1998, Page(s):539 - 544
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (184 KB)

    The linear theory of electromagnetic radiation from a magnetized plasma-filled backward wave oscillator with a sinusoidally corrugated slow wave structure driven by a solid intense relativistic electron beam has been given, and the dispersion relation has been obtained View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Antlab software's application in the designs of the antennas for satellite communication earth station

    Publication Year: 1998, Page(s):391 - 394
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (252 KB)

    The paper briefly introduces a new antenna software ANTLAB. It is described in detail how the software is used in designing the antenna of a Ku-band earth station. The result has been given. Finally, the paper illuminates the inter-supplemental relation between ANTLAB and other electromagnetic field application software View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • ECM calls for HPM vacuum tubes

    Publication Year: 1998, Page(s):787 - 790
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (208 KB)

    The trend towards the use of solid-state amplifiers in the fields of ECM has accelerated in recent years. One can not ignore the fact that more and more solid-state devices are being used in multi-beam jammer or phased array stand off jamming equipment. However, ECM calls for HPM vacuum tubes. This paper compares the use of HPM tubes with that of solid-state devices in ECM applications. The concep... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The radiation emission model of twisted-pairs

    Publication Year: 1998, Page(s):399 - 403
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (140 KB)

    In this paper, we establish the emission model and formulas of the radiation field of twisted-pairs by applying the helix antenna theory. After considering the existence of the common mode current, we designed an experimental method of measuring the radiation field of the differential mode current on single-segment twisted-pairs terminated with an open circuit. The results agree with calculation r... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Two-level classification of target recognition based on neural network

    Publication Year: 1998, Page(s):460 - 462
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (168 KB)

    In this paper, we present a classification method, which contains a competitive learning algorithm with a nonlinear map function. Since leakage and error exist in one-level classification, then this method is particularly effective in recognition. A new concept, which is the “two-level classification”, is proposed, it and its application to feature extraction and data association are a... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Nonlinear modeling of microwave active devices using wavelets

    Publication Year: 1998, Page(s):965 - 969
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (300 KB)

    The nonlinear modeling of microwave active devices is developed, using the interpolating wavelets. The solution is obtained in the time-domain. Examples of device and circuit simulations are presented View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • 8 mm GaAs power monolithic integrated circuit

    Publication Year: 1998, Page(s):222 - 225
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (160 KB)

    The design, fabrication and performance measurement of an 8 mm monolithic IC based on a GaAs MESFET device with a 0.4 μm gate width are presented. The performance characteristics of the MIMIC are: Pout>100 mW, Ga>3 dB, Poutmax=150 mW at 32-33 GHz View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Microwave response of epitaxial high Tc-TlBaCaCuO superconducting thin films

    Publication Year: 1998, Page(s):682 - 685
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (220 KB)

    We have investigated the microwave response of the epitaxial TlBaCaCuO thin films on LaAlO3 substrates. The distinction between the bolometric and nonbolometric response is presented by comparison of the characteristic of the responses at different temperatures, bias currents, and chopping frequencies. The bolometric microwave response of the films is proportional to the dR/dT of the fi... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Problems on demonstration of the electric field producing the magnetic field

    Publication Year: 1998, Page(s):602 - 606
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (304 KB)

    It is well known that Maxwell had extended Faraday's two experiments and modified Ampere's circuit law to have obtained the celebrated thesis of induced magnetic field produced by a time varying electric field. This paper is concerned with the root of the formula ∇×H=JD, and points out that: 1. electric displacement does not exist in our space; 2. displacement current is unw... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Using simplex algorithm to calculate the near-field power densities of aperture antennas

    Publication Year: 1998, Page(s):415 - 418
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (256 KB)

    A simplex algorithm be used to calculate the near-field power densities of aperture antennas is described in this paper. For this algorithm, consider that an aperture can be divided into a number of Huygens' elements. The radiation field of the aperture is the sum of these elements. To examine the accuracy of the algorithm, some measurements of the near-field have been performed in a test site usi... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Miniaturization of pulsed optically pumped CH3OH far infrared laser

    Publication Year: 1998, Page(s):261 - 264
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (236 KB)

    A miniature optically pumped CH3OH FIR laser (CH3 OH-OH-OPFIRL), which used a pair of metallic meshes as “mirrors” for Fabry-Perot cavity, with variable sample tubes in lengths from 1.0 m to 0.2 m or 0.1 m was constructed. When pumped by a TEA-CO2 laser 9P(16) line, FIR laser lines of 570 μm, 369 μm and 918 μm wavelength were obtained, and the ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • An unmanned air vehicle (UAV) GPS location and navigation system

    Publication Year: 1998, Page(s):472 - 475
    Cited by:  Papers (1)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (248 KB)

    GPS enhances the ability of UAV system to control the air vehicle, an electronic map displays dynamically the position results and happenings around the UAV. To combine GPS and electronic map, visual UAV dynamic location and navigation is realized View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Direct sealing of millimeter-wave transmission windows

    Publication Year: 1998, Page(s):718 - 721
    Cited by:  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (204 KB)

    This paper concisely describes direct sealing of the hermetic sapphire-kovar millimeter-wave windows with active brazing alloy foil, and preliminary discusses the advantages of it View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The analysis of a suspended line-fed cavity-backed antenna for flat plate array

    Publication Year: 1998, Page(s):404 - 407
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (188 KB)

    A hybrid technique that combines the method of dyadic Green function, the mode-matching method and the generalized scattering matrix technique to analyze a suspended line-fed cavity-backed antenna (SLCA) is presented in this paper. The method has been found to be highly efficient for calculation of the antenna. Some design formulas and important theoretical results are given View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Fields in the back plane of extended hemi-spherical lens

    Publication Year: 1998, Page(s):655 - 658
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (184 KB)

    In this paper, the fields distributions in the back plane of an extended hemispherical lens are calculated with the diffraction integration formula. Results are presented that show important properties versus oblique angle of incident plane wave and extension length: diffraction pattern, vectorial characteristics of fields, fields strength. The results provide much information on the imaging prope... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The local restitution of GPS time at Shanghai Observatory

    Publication Year: 1998, Page(s):467 - 471
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (264 KB)

    Local restitution of GPS time (LRGPST) at Shanghai Observatory (SO) is the synthesized results for GPS time with multi-satellites at UTC 0h. It is obtained by using the method of the cubic spline function to interpolate smooth and weight averaging for the GPS time comparison data received from a single satellite at a different moment. With calculated results from LRGPST data during 1995-1996, it s... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A new telescope feed system

    Publication Year: 1998, Page(s):612 - 614
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (120 KB)

    A new telescope feed system at millimeter wavelength is described. This system is designed to operate at 100 GHz. The element antennas are offset parabolic reflectors with a diameter of 1 meter and a f/D ratio of 100. The Gaussian beam technique is used for wideband feed design. A major advantage of the Gaussian technique is the simplicity of the Gaussian formula. This new 100 GHz radiotelescope f... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Null control of pattern in antenna design

    Publication Year: 1998, Page(s):353 - 356
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (180 KB)

    In this paper, the null distribution of an antenna pattern is analyzed. The antenna pattern and its sidelobe level have close relations with the null distribution. Null analyses may also be used in antenna design. Furthermore, the problem of the integrity of sum and difference patterns is discussed here, with some characteristics and relations revealed View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Radio on fibre communication systems based on integrated circuit-antenna modules

    Publication Year: 1998, Page(s):159 - 169
    Cited by:  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (668 KB)

    In this paper a new transmit/receive module is presented which is based on the integration of millimetre-wave and optoelectronic devices. This module reduces the size, weight, power consumption, reliability and cost of the overall radio on fibre system View full abstract»

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