Results 211 to 220 of about 894 (260)

Millimeter-wave dielectric leaky-wave antennas

Proceedings of ISSE'95 - International Symposium on Signals, Systems and Electronics, 2002
A dielectric leaky-wave antenna with a new perturbation scheme is developed. The attenuation constant with different gap width between metal patches is determined experimentally. The dielectric waveguide used is an anisotropic sapphire rod. The conventional effective dielectric constant (EDC) method is modified to calculate the unperturbed propagation ...
null Chung-Yi Lee, A. Basu, J. Liao, J.S.-M. Wong, B. Houshmand, T. Itoh   +5 more
openaire   +1 more source

Leaky wave antennas

2001
articolo n ...
FREZZA, Fabrizio, GALLI, Alessandro, LAMPARIELLO, Paolo   +2 more
openaire   +3 more sources

Magnetically Scannable Leaky Wave Antenna

2018 2nd URSI Atlantic Radio Science Meeting (AT-RASC), 2018
This 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, M. Garcia-Poveda, J.L. Gomez-Tornero, G. Goussetis, C. Mateo-Segura   +4 more
openaire   +1 more source

Reconfigurable leaky-wave antennas

2018
In this chapter, an overview of the recent development of reconfigurable high-gain antennas is presented. These antennas range from reconfigurable Yagi antennas, reconfigurable reflectarrays and reconfigurable transmitarrays to reconfigurable PRS antennas.
Yingjie Jay Guo, Debabrata K. Karmokar, Trevor S. Bird   +2 more
openaire   +2 more sources

Graphene terahertz leaky-wave antennas

2019
In this chapter, we focus on the recent developments made in the context of graphene THz antennas, especially those exploiting the graphene field effect to reconfigure their radiating features. To this purpose, we first review the electronic properties of graphene in the THz range from both a physical and an engineering perspective.
Fuscaldo W, Burghignoli P, Baccarelli P, Galli -A   +3 more
openaire   +1 more source

Development of leaky-wave antennas

2016 IEEE International Symposium on Antennas and Propagation (APSURSI), 2016
This presentation overviews the development of leaky-wave antennas (LWAs) and the area of leaky waves, starting with the first LWA that was introduced and the early pioneering work of Marcuvitz and Oliner in explaining leaky-wave theory. The development leads up through the present time, where LWAs have seen a renewed interest in the context of ...
Jackson, David R., BACCARELLI, Paolo, BURGHIGNOLI, Paolo, GALLI, Alessandro, LOVAT, GIAMPIERO   +4 more
openaire   +1 more source

SIW leaky wave antennas

2014 44th European Microwave Conference, 2014
The substrate integrated waveguide can easily be integrated with planar microwave circuits. Antennas designed on this transmission line have a planar structure, and can be fabricated by a standard PCB technology, so they are suitable for mass production.
openaire   +1 more source

Planar leaky-wave microstrip antenna

IEEE Antennas and Propagation Society International Symposium 1997. Digest, 2002
In 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
openaire   +1 more source

Metamaterial Based Leaky Wave Antenna

2019 8th Asia-Pacific Conference on Antennas and Propagation (APCAP), 2019
In this paper, a CRLH (Composite Right and Left Handed) leaky-wave antenna is proposed for V2X communication. The unit cell is composed of series chip capacitors and via for metamaterial properties. Also, the ground length is varied to attach on the automobiles. The size of the unit cell is 20×40 mm2 and the EM Simulation was used to see the results.
Yejune Seo, Heejun Park, Changhyeong Lee, Gwang-gyun Namgung, Jinsu Jeon, Sungtek Kahng   +5 more
openaire   +1 more source

New millimeter-wave leaky-wave antennas

Proceedings of 1997 Asia-Pacific Microwave Conference, 2002
This paper describes a variety of leaky-wave line sources derived from an open waveguide, on which modifications in the cross section are introduced to produce radiation. This allows the control of the leakage rate along the length of the radiator making it possible to shape the radiation pattern.
openaire   +2 more sources