Journal ArticleDOI
Millimeter-Wave Substrate Integrated Waveguide Long Slot Leaky-Wave Antennas and Two-Dimensional Multibeam Applications
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TLDR
In this article, two types of substrate integrated waveguide (SIW) long slot leaky-wave antennas with controllable sidelobe level are proposed and demonstrated and demonstrated.Abstract:
Two types of substrate integrated waveguide (SIW) long slot leaky-wave antennas with controllable sidelobe level are proposed and demonstrated in this paper. The first prototype is able to achieve an excellent sidelobe level of -27.7ndB by properly meandering a long slot etched on the broadside of a straight SIW section from the centerline toward the sidewall then back. But it is known that an asymmetrically curved slot would worsen the cross-polar level. To overcome this drawback, a modified leaky-wave antenna is proposed, which has a straight long slot etched on the broadside of a meandering SIW section. It yields an outstanding sidelobe level of -29.3 dB and also improves the cross-polar level by more than 11 dB at 35 GHz. Experimental results agree well with simulations, thus validating our design. Then, a two-dimensional (2-D) multibeam antenna is developed by combining such 14 leaky-wave antennas with an SIW beamforming network (BFN). It has features of scanning both in elevation orientation by varying frequency and in cross-plane direction by using the BFN. Excited at ports 1-10 of such a 2-D multibeam antenna at 35 GHz, angular region of 86.6° in azimuth can effectively be covered by 3 dB beam-width of ten pencil beams. Varying frequency from 33 GHz to 37 GHz, the angular region of 37.5° and 38.9° in elevation can be covered by 3 dB beam-width of those continuous scanning beams excited at ports 6 and 8 respectively.read more
Citations
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Journal ArticleDOI
Substrate Integrated Waveguide (SIW) Leaky-Wave Antenna With Transverse Slots
TL;DR: In this article, a uniform slotted SIW leaky-wave antenna is designed that has good beam scanning from near broadside (though not exactly at broadside) to forward endfire.
Journal ArticleDOI
94 GHz Substrate Integrated Monopulse Antenna Array
Yu Jian Cheng,Wei Hong,Ke Wu +2 more
TL;DR: In this paper, a planar W-band monopulse antenna array based on the substrate integrated waveguide (SIW) technology is designed, where the sum-difference comparator, 16-way divider and 32 × 32 slot array antenna are all integrated on a single dielectric substrate in the compact layout through the low-cost PCB process.
Journal ArticleDOI
Substrate-Integrated Millimeter-Wave and Terahertz Antenna Technology
TL;DR: Millimeter-wave and terahertz antenna technologies are overviewed including the conventional and nonconventional planar/nonplanar antenna structures based on different platforms with respect to theoretical and experimental results in connection with electrical and mechanical performances.
Journal ArticleDOI
Investigations of SIW Leaky-Wave Antenna for Endfire-Radiation With Narrow Beam and Sidelobe Suppression
TL;DR: In this paper, a substrate integrated waveguide (SIW) leaky-wave antenna with a narrow beam and sidelobe suppression was investigated for end-fire-radiation with an SIW antenna with tapered transverse slots on only the top and bottom planes.
Journal ArticleDOI
A Simple Technique for Open-Stopband Suppression in Periodic Leaky-Wave Antennas Using Two Nonidentical Elements Per Unit Cell
TL;DR: In this paper, a simple technique is presented for the complete suppression of the open stopband in periodic leaky-wave antennas using two similar but non-identical elements per unit cell.
References
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TL;DR: In this paper, the authors present an overview of the fundamental principles of Antennas, including antennas of Discrete Elements (DDE), dipoles, monopoles, and loops.
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TL;DR: In this paper, the authors present an overview of the history of connected arrays and their applications in the field of pattern synthesis, and present a detailed analysis of the connections and their properties.
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TL;DR: In this paper, the authors present an approach for the synthesis of a single antenna array from a single-antenna array using a modified version of Taylor's Taylor diagram and a modified Taylor diagram with a modified ring side lobe topography.
Journal ArticleDOI
Dispersion characteristics of substrate integrated rectangular waveguide
TL;DR: In this paper, the dispersion properties of the substrate integrated rectangular waveguide (SIRW) were rigorously obtained using the BI-RME method combined with the Floquet's theorem.