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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Ettorre, M. Rudolph, S.M. Grbic, A. |
| Copyright Year | 1963 |
| Abstract | We present the experimental generation of Bessel beams using a leaky radial waveguide. The radial waveguide consists of a capacitive sheet over a ground plane. The capacitive sheet is composed of patch elements printed on both sides of a dielectric substrate. The radial waveguide is coaxially fed and supports an azimuthally invariant leaky-wave mode whose normal electric-field component is a truncated, zeroth-order Bessel function. Two prototypes are presented with the same propagation constant and lateral extent, but different attenuation constants. 2D electric field measurements and their respective Fourier transforms validate the operation of the prototypes as Bessel-beam launchers at two frequency bands. Cleaner patterns are achieved by the prototype with lower attenuation constant. The dual-band capability and associated frequency dependent resolution can be useful in near-field planar focusing systems. The proposed structure can be used for generating arbitrary zeroth-order propagating Bessel beams at microwave and millimeter-wave frequencies. |
| Sponsorship | IEEE Antennas and Propagation Society |
| Starting Page | 2645 |
| Ending Page | 2653 |
| Page Count | 9 |
| File Size | 2927722 |
| File Format | |
| ISSN | 0018926X |
| Volume Number | 60 |
| Issue Number | 6 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2012-06-01 |
| Publisher Place | U.S.A. |
| Access Restriction | One Nation One Subscription (ONOS) |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Prototypes Impedance Propagation constant Dispersion Electric variables measurement Frequency measurement Surface impedance no diffractive waves Bessel beams diffraction-free beams leaky-wave modes |
| Content Type | Text |
| Resource Type | Article |
| Subject | Condensed Matter Physics Electrical and Electronic Engineering |
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