In modeling of hard disk drive interconnects, one
often encounters frequency-dependent impedance ... more In modeling of hard disk drive interconnects, one often encounters frequency-dependent impedance expressions formulated in terms of special and transcendental functions or symbolic inverses. In this paper, we develop fast accurate evaluations of these expressions with solution visualization and correct interpretation. We demonstrate this methodology for the computation of a ratio of confluent hypergeometric functions via Padé approximations for a number of geometrical structures such as a round wire and a flat plate. Equivalent circuits are also derived.
Abstract-The propagation of guided waves along a metal grating lying on a grounded dielectric sub... more Abstract-The propagation of guided waves along a metal grating lying on a grounded dielectric substrate is studied. Hitherto, investigation of the properties of such waves has been restricted to directions of propagation perpendicular to or nearly parallel to the strips of grating. Averaged boundary conditions for the fields at the grating are used here to simplify the analysis, and are expected to yield accurate results for grating periods that are sufficiently small compared to a wavelength. Comparisons made with more exact computations in the literature are shown to be good. The results have potential application for microwave and millimeter wave waveguides, slotted microstrip antennas, and circuit elements.
In modeling of hard disk drive interconnects, one
often encounters frequency-dependent impedance ... more In modeling of hard disk drive interconnects, one often encounters frequency-dependent impedance expressions formulated in terms of special and transcendental functions or symbolic inverses. In this paper, we develop fast accurate evaluations of these expressions with solution visualization and correct interpretation. We demonstrate this methodology for the computation of a ratio of confluent hypergeometric functions via Padé approximations for a number of geometrical structures such as a round wire and a flat plate. Equivalent circuits are also derived.
Abstract-The propagation of guided waves along a metal grating lying on a grounded dielectric sub... more Abstract-The propagation of guided waves along a metal grating lying on a grounded dielectric substrate is studied. Hitherto, investigation of the properties of such waves has been restricted to directions of propagation perpendicular to or nearly parallel to the strips of grating. Averaged boundary conditions for the fields at the grating are used here to simplify the analysis, and are expected to yield accurate results for grating periods that are sufficiently small compared to a wavelength. Comparisons made with more exact computations in the literature are shown to be good. The results have potential application for microwave and millimeter wave waveguides, slotted microstrip antennas, and circuit elements.
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Papers by Fethi B
often encounters frequency-dependent impedance expressions
formulated in terms of special and transcendental functions
or symbolic inverses. In this paper, we develop fast accurate
evaluations of these expressions with solution visualization and
correct interpretation. We demonstrate this methodology for the
computation of a ratio of confluent hypergeometric functions
via Padé approximations for a number of geometrical structures
such as a round wire and a flat plate. Equivalent circuits are also
derived.
and millimeter wave waveguides, slotted microstrip antennas, and circuit elements.
often encounters frequency-dependent impedance expressions
formulated in terms of special and transcendental functions
or symbolic inverses. In this paper, we develop fast accurate
evaluations of these expressions with solution visualization and
correct interpretation. We demonstrate this methodology for the
computation of a ratio of confluent hypergeometric functions
via Padé approximations for a number of geometrical structures
such as a round wire and a flat plate. Equivalent circuits are also
derived.
and millimeter wave waveguides, slotted microstrip antennas, and circuit elements.