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Leaky-wave antennas with anisotropic metamaterials
2010 IEEE Antennas and Propagation Society International Symposium, 2010Leaky wave antennas can offer high directivity and frequency scanning [1]. An isotropic dielectric slab with refractive index n > 1 does not radiate effectively unless spatial variations are introduced to excite fast-wave space harmonics [1]. To realize uniform leaky wave structures, potentially in the optical domain, a metamaterial slab with n ≪ 1 has
null Huikan Liu, K J Webb
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RCS of a Microstrip Leaky-Wave Antenna
IEEE Antennas and Wireless Propagation Letters, 2013The monostatic radar cross section (RCS) of a microstrip leaky-wave antenna (MLWA) is investigated. Both full-wave simulation and laboratory measurement are carried out to characterize its RCS as a function of frequency and aspect angle. Three distinct scattering features in the range-aspect plane are observed.
Shang-Te Yang, Hao Ling
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A periodic microstrip leaky-wave antenna
2008 Asia-Pacific Microwave Conference, 2008A novel periodic microstrip leaky wave antenna is presented in this letter. The radiation patterns are similar to the conventional MLWA. The measured half-power beamwidth of H-plane radiation patterns are less than 30deg. This design can be a candidate for personal communications and automobiles radar systems.
null Yuanxin Li +3 more
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Planar leaky-wave microstrip antenna
IEEE Antennas and Propagation Society International Symposium 1997. Digest, 2002In a single microstripline, the dominant mode is "quasi" TEM, which is a non-radiating surface mode. The higher-order modes, however, become leaky when the propagation constant is less than that of the free-space wave number, k/sub 0/. One of the simplest ways to realize a leaky-wave antenna is to use a regular microstripline properly excited by a ...
null Choon Sae Lee, V. Nalbandian
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Magnetically Scannable Leaky Wave Antenna
2018 2nd URSI Atlantic Radio Science Meeting (AT-RASC), 2018This paper discusses the electronically scanning characteristics of a Leaky-Wave Antenna by means of controlling the real part of the leaky-mode complex longitudinal propagation constant at a fixed frequency. The structure is based on a standard rectangular waveguide section with a series of slots cut along its broad wall and loaded with a transversely-
S. A. Rotenberg +4 more
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2016
The main radiation mechanism in a leaky wave antenna is a travelling wave in a guided structure. The main characteristics of a leaky wave antenna are: light weight, easy to fabricate. Leaky wave antennas have been in use since the 1940s. In this thesis, a portable and powerful leaky-wave antenna is designed, implemented, and demonstrated for scanning ...
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The main radiation mechanism in a leaky wave antenna is a travelling wave in a guided structure. The main characteristics of a leaky wave antenna are: light weight, easy to fabricate. Leaky wave antennas have been in use since the 1940s. In this thesis, a portable and powerful leaky-wave antenna is designed, implemented, and demonstrated for scanning ...
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B7. Leaky-Wave Coaxial Antenna
2013 30th National Radio Science Conference (NRSC), 2013Analysis and design of a coaxial leaky wave antenna with partially reflecting outer surface are presented. The leaky wave properties are controlled by adjusting the surface impedance of the outer surface, the filling dielectric constant and the dimensions of the inner and outer radii.
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Conformal Leaky-Wave Antennas for Terahertz Networks
2023 23rd International Conference on Transparent Optical Networks (ICTON), 2023Hichem Guerboukha +4 more
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The antenna has a layer arrangement (30) with three metallized layers (32, 34, 36) that are arranged parallel to each other and separated from each other by dielectric sheets (38, 40). Two of the layers comprise a two dimensions periodical metallization structure, and the third layer comprises a continuous metallization region. A stimulation structure (
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An antenna comprises a conically shaped body of dielectric material. Cross-sections of the body have truncated elliptical shape, wherein each shape is truncated substantially through a first focus of the elliptical shape along a truncation line that extends substantially perpendicularly to a main axis of the elliptical shape.
Neto, A. +3 more
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Neto, A. +3 more
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