A dual-polarized antenna array for a one-dimensional (1D) active electronically steerable array (AESA) includes first and second arrays of open-ended waveguide elements interleaved with one another, each array including a plurality of corporate networks extending transverse to a scan plane SP and ...
Increased Bandwidth Evanescent Open-Ended Waveguide Antenna Design Using the Imaginary Smith ChartElectrically smallImaginary Smith Chartevanescent waveguide antennaWe present a novel antenna matching technique that uses the Imaginary Smith Chart to permit wideband matching of an evanescent open-ended waveguide...
Antenna Radiation PatternsLens AntennasWaveguidesDesign AnalysisElectric FieldsSpheresSurface GeometryThe radiation patterns of a spherical Lneberg lens with open-ended waveguide as the primary feed have been determined theoretically. The effects of the variations of the primary feed aperture dimensions and ...
An open-ended waveguide as a front-end radiating component is a wide-spread element of many antenna systems. Though the problem of its radiation pattern calculation is an old one, however, some aspects are not completely developed. One of the most popular method for calculation of radiation cha...
This communication demonstrates that an open-ended coaxial waveguide can be a good aperture antenna for generating conical-beam radiation. Design equations are derived to obtain the radii of inner and outer conductors of a coaxial waveguide radiating into a half free space. A design example is prov...
(Runner Up Best Student Prize),Matching Evanescent Open-Ended Waveguide Antennas Using The Imaginary Smith Chart The miniature dielectric-filled open-ended waveguide antenna is introduced as anovel type of radiating element. Comparison with microstrip antennas explain... P Ludlow,V Fusco 被引量: 2发...
For other applications, it is desirable for an open-ended waveguide radiator to have a smaller reflection coefficient over a broad frequency range. With reduced aperture reflection, accuracy is improved in measurement applications and efficiency is increased in array antenna applications. Broadband ...
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An open waveguide antenna for a radio frequency identification reader includes a conductive annular waveguide concentric about an axis and configured for operation within an operating frequency band. A radiating slot is formed in at least one wall of the waveguide is also concentric about the axis....
The lens is fed by a broadband waveguide antenna placed 78 mm away from the lens. A foam block with relative permittivity about 1.05 was adopted to separate the feed and the GRIN lens. The feed is a special open-ended waveguide antenna which possesses axial symmetric radiation patterns36. ...