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  • 1
    Electronic Resource
    Electronic Resource
    Singular products of distributions (1979)
    Springer
    Mathematische Annalen 240 (1979), S. 39-40 
    Details
    ISSN: 1432-1807
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01428298
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  • 2
    Electronic Resource
    Electronic Resource
    Metal wave-guide to dielectric image guide transition using exponential taper (1992)
    Springer
    International journal of infrared and millimeter waves 13 (1992), S. 1895-1914 
    Details
    ISSN: 1572-9559
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A unique metal wave guide to dielectric image guide transition has been developed using exponential taper in dielectric wave guide. The propagation characteristics have been computed theoretically and taper impedance for the different cross-sections have been evaluated, so as to match it with the metal wave guide for efficient mode conversion. Transmission loss and return loss for triangular and exponentail taper with frequency for same dimensional parameters have been measured.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01011330
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  • 3
    Electronic Resource
    Electronic Resource
    Strip dielectric wave guide antenna-for the measurement of dielectric constant of low-loss materials (1993)
    Springer
    International journal of infrared and millimeter waves 14 (1993), S. 1471-1483 
    Details
    ISSN: 1572-9559
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The value of dielectric constant are the most important parameters in material science technology. In micro-wave and millimeter wave circuits using dielectric materials the values of this parameters should be known accurately. It is observed that the number of methods are reported in litrature, however these methods impose difficulties in experimentation and are not very accurate. In this paper a novel approach to the measurement of the dielectric constant of low loss materials at micro-wave and millimeter wave frequencies has been discussed. In this method by using antenna theory, a metallic strip dielectric guide is taken in to constideration and band reject phenomenon of dielectric antenna is used. Frequency response of an antenna in band reject mode is a function of the dimensional parameters, such as the metallic strip period, the profile of the metallic strip and the dielectric constant of the material used. Hence if one measure the frequency responce of the antenna in band reject mode, the dielectric constant of the material is determined provided all other parameters are known. This method gives a direct measure of dielectric constant and is quite accurate as computer techniques are used for evaluating the dielectric constant. This method verified experimentally also.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02084420
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  • 4
    Electronic Resource
    Electronic Resource
    Measurement of quality factor of the coupled nonradiative dielectric guide (1987)
    Springer
    International journal of infrared and millimeter waves 8 (1987), S. 911-915 
    Details
    ISSN: 1572-9559
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The dispersion characteristics of non radiative coupled dielectric guide have been computed using mode matching technique. From dispersion characteristics the conductor and dielectric losses have been evaluated and thus knowing the total losses, the quality factor of the coupled non radiative dielectric guide is evaluated in Ka band.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01010728
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  • 5
    Electronic Resource
    Electronic Resource
    Effect of metallic side walls on field distribution of generalized, single and coupled dielectric wave guide (1987)
    Springer
    International journal of infrared and millimeter waves 8 (1987), S. 917-922 
    Details
    ISSN: 1572-9559
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The effect of metallic side walls on the field distribution of generalized single and coupled dielectric guide has been theoretically computed for even and odd modes using mode matching technique in EYmn configuration. It is concluded that the field EYmn is not symmetrical due to presence of side walls.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01010729
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  • 6
    Electronic Resource
    Electronic Resource
    Effect of metallic walls on shielded suspended dielectric guide (1993)
    Springer
    International journal of infrared and millimeter waves 14 (1993), S. 67-84 
    Details
    ISSN: 1572-9559
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02274716
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  • 7
    Electronic Resource
    Electronic Resource
    A unique method for reducing losses of bends in dielectric optical wave guide (1993)
    Springer
    International journal of infrared and millimeter waves 14 (1993), S. 1445-1453 
    Details
    ISSN: 1572-9559
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The dielectric optical wave guide is finding growing attention at millimeter wave frequencies. However the dielectric optical waveguide radiates at bends and thus transmission loss increases. These radiations are in the outword direction of bends. This output radiation at output bends arises due to change in phase velocities of the propagating wave at the centre of the dielectric guide and the phase velocity at the outer surface of the dielectric guide. A unique methiod is suggested to avoid these radiation losses.Experimental results are also shown at microwave frequencies.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02084418
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  • 8
    Electronic Resource
    Electronic Resource
    Non-radiative phenomenon in couple dielectric guide (1993)
    Springer
    International journal of infrared and millimeter waves 14 (1993), S. 1813-1824 
    Details
    ISSN: 1572-9559
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The solutions of electromagnetic field equations for non-radiative coupled dielectric guides are derived using mode matching technique. Dispersion curves are plotted for various dielectric materials and dimensional parameters. The non-radiative phenomenon in the coupled dielectric guide has been discussed in detail. The hybrid directional couplers in the above configuration have been theoretically designed by computing the normalized propagation constants. The superiority of such directional couplers is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02101334
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  • 9
    Electronic Resource
    Electronic Resource
    Directional couplers in trapped image guide configuration (1994)
    Springer
    International journal of infrared and millimeter waves 15 (1994), S. 1709-1720 
    Details
    ISSN: 1572-9559
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Dispersion characteristics and wave impedance of trapped coupled image guides are computed by using mode matching techniques. Dispersion curves for trapped coupled image guide are plotted for various dielectric materials and dimensional parameters. The hybrid directional couplers in the above configuration have been theoretically designed by computing the normalization propagation constant.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02096898
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  • 10
    Electronic Resource
    Electronic Resource
    Dispersion characteristics of broadside coupled dielectric image guide at millimeter wave frequencies (1995)
    Springer
    International journal of infrared and millimeter waves 16 (1995), S. 601-614 
    Details
    ISSN: 1572-9559
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Dispersion characteristics and wave impedance for the even and odd modes of the broad side coupled dielectric image guides are computed by using mode matching techniques. Dispersion curves for broadside image guide are plotted for various dielectric materials and dimensional parameters as a function of frequency. Normalized electric field for dominant electric field component E of TM even and odd modes for various half spacings between two dielectric slabs of broadside coupled image guide have been plotted. Polysterene (∈ r=2.56) and Stycast (∈ r=3.4) have been used as dielectric materials in fabricating broadside coupled image guide. This broadside coupled dielectric guide is very convenient as compared to the other dielectric guides. Since in case of broadside coupled image guide the dielectric slab can be bonded to the side metallic walls using some low loss adhesive material, while in other coupled dielectric guides the dielectric slab have to be supported by some low dielectric constant material (Eccofoam with ∈ r=1.02) to maintain the proper distance of side metallic walls from the dielectric slab. Since this structure is symmetrical, this configuration can be analysed in terms of even and odd mode phase velocities. The difference in these even and off mode phase velocities can be used to determine the coupling between coupled dielectric slab. Various couplers in this configuration can be realised.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02066885
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