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Antennas and Propagation Magazine, IEEE

Issue 4 • Date Aug. 1992

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Displaying Results 1 - 4 of 4
  • Channel characteristics for land cellular radio, and their systems implications

    Publication Year: 1992 , Page(s): 7 - 16
    Cited by:  Papers (13)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (852 KB)  

    Characterization of the channel, in terms that are useful for system design and performance evaluation, is addressed. An attempt is made in the current effort to link physical features of the environment to some deterministic characteristics of the channel, and to a better characterization of the statistical behavior. The predictions are then validated by an extensive measurement campaign, with an... View full abstract»

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  • Some fun with Bessel functions

    Publication Year: 1992 , Page(s): 17 - 19
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (209 KB)  

    A theoretical investigation of generating functions is pursued using the theory of the Z-transform. Bessel functions are viewed as outputs from infinite impulse response (IIR) filters. It is shown that a single second-order linear ordinary differential equation with nonconstant coefficients defines a family of generating functions for all the Bessel functions of integral order. A numerical method ... View full abstract»

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  • Surface losses in transmission lines

    Publication Year: 1992 , Page(s): 22 - 26
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (402 KB)  

    Two derivations of the loss parameter R, entirely from wave considerations in the presence of a metallic interface, are presented. R, which represents surface losses, occurs in transmission line equations for propagation of the voltage across the plates and of the current in the plates. Explanation of the surface losses involves some radiation of the interior fields into the metallic surfaces that... View full abstract»

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  • Approximations for computing the weighting parameters for one-parameter Taylor and Hansen aperture distributions

    Publication Year: 1992 , Page(s): 34 - 35
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (151 KB)  

    Approximations are presented for determining the weighting parameters for one-parameter linear- and circular-aperture distributions, when the desired mainlobe-to-sidelobe ratio is known. These approximations may be more convenient to use than the iterative methods or lookup tables that have been suggested previously in the literature. Both approximations exhibit worst-case errors of less than +or-... View full abstract»

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