Prohlížení Publikační činnost - 13117 dle názvu
Zobrazují se záznamy 36-55 z 58
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Performance of the slotline in the mm-wave range
(IEEE, 1998-05)This paper deals with an investigation of the dispersion characteristics of the slotline in the mm-wave range. Attention is paid to the possible excitation of the surface leaky waves on the slotline. Higher order leaky ... -
Planar Slot-Patch Antenna
(IEEE, 2001-09)This paper discusses investigations of leaky wave radiation from the slotline made on a low permittivity substrate. New findings on the field distribution of the space leaky wave propagating on a slotline with a wide slot ... -
Planar Transmission Lines in MW and MMW Circuits
(IEEE, 2005-09)The analysis of open, particularly slotted planar transmission lines in a wide frequency range is presented in this paper. The full wave approach by the spectral domain method is applied. Theoretical findings and their ... -
Power Control in Passive Waveguide Circuits
(IEEE, 2006-12)A new concept of a passive waveguide reflection attenuator and a T-junction with a variable ratio of the output powers is reported here. A conductive uniform linear polarization grid of nano thickness is inserted into the ... -
Quasi-Elliptic Microstrip Low-Pass Filters Using an Interdigital DGS Slot
(IEEE, 2007-08)This letter introduces a DGS slot with an interdigital shape. The resonant frequency of the slot can be easily controlled by changing the length of the metal fingers, without changing the area taken by the structure. Using ... -
Reflection from a Gold Sputtered Thin Layer
(IEEE, 2006-05)This paper presents the results of an investigation of a thin layer of gold sputtered on a dielectric foil. This layer is modeled by nanometer-scale spherical particles that are separated at short deposition times and later ... -
Short and Open Circuited Slot Line
(IEEE, 1995-07)A slot line terminated by the short and open end is analysed by the spectral domain method (SDM). The original process of Yang and Alexopoulos (1988) is modified by application of the piecewise sinusoidal functions only. ... -
Space Leakage of Power from the Slotline
(IEEE, 2001)In this paper we present the comprehensive dispersion characteristics of the slotline on thin and low permittivity substrate with a wide slotwidth comprising the bound and space leaky waves with even and odd electric field ... -
Space leakage of power from uniplanar transmission lines
(IEEE, 2000)Surface and space leakage of power deteriorates the operation of circuits. On the other hand space leaky waves enable the design of specific radiators. We therefore investigate the potential of the slotline and the coplanar ... -
Spurious leaky mode solutions and experimental verification of the second leaky wave
(IEEE, 1999)This paper presents the revelation of spurious leaky mode solutions of the dispersion equation, and experimental confirmation of the occurrence of the second leaky wave on the slotline. The appearance of the spurious ... -
Stability of FDTD in Curvilinear Coordinates
(IEEE, 2001-07)A new approach suitable for determination of the maximal stable time step for the finite-difference time domain (FDTD) algorithm in curvilinear coordinates is presented. It is based on a modified variable separation method, ... -
Static model of DH laser
(IEEE, 1983-04)A method of complex analysis of the double-heterostructure stripe-geometry laser, based on a new static model, is presented. The optical field distribution in the active region of the laser is described by the wave equation. ... -
Surface leaky waves and their measurement
(IEEE, 1998-10)A new approach to experimental identification of surface leaky waves on printed-circuit lines is presented in this paper. Active radiometry is used for field probing even in the near field zone. The measurement is adjusted ... -
The Distributed Oscillator at 4 GHz
(IEEE, 1998-12)This paper describes the design and experimental verification of a tunable oscillator based on a microwave distributed amplifier. The oscillator met design expectations, being capable of continuous tuning over the range ... -
The Inverted Conductor-Backed Slotline - a Challenge to Antenna and Circuit Design
(IEEE, 2003-10)The characteristics of modes on the conductor-backed slotline, the inverted conductor-backed slotline and on its modification in which the top dielectric layer with higher permittivity has a finite thickness, are presented ... -
Triple Wire Medium for Use in Isotropic Metamaterials
(IEEE, 2007-10)In this paper a triple wire medium is described as an isotropic negative permittivity medium. A numerical experiment was performed to validate the propagation of electromagnetic waves inside the wire lattice below the ... -
Upper Cut-Off Frequency of the Bound Wave and New Leaky Wave on the Slotline
(IEEE, 1997-06)This paper contributes to a more profound understanding of uniplanar circuit behaviour. A simple closed-form formula providing the upper cut-off frequency of the bound wave propagating over the slotline is presented. A new ... -
Use of Nano-Grids in a Waveguide
(IEEE, 2006-09)A new concept of passive waveguide circuits is presented. It is based on a combination of the standard rectangular waveguide with a metal uniform linear polarization grid of nano thickness. The grid is deposited on a polymer ... -
Visualization of leaky waves on planar transmission lines
(IEEE, 2004-05)This paper presents a visualization of leaky waves excited by delta-gap sources on planar transmission lines, namely the 2nd surface and space leaky modes on the slotline, and the dominant and surface leaky modes on the ...