Results 191 to 200 of about 1,561,844 (236)
Some of the next articles are maybe not open access.
Leaky wave Antenna for mobile phones
International Meeting on Advanced Technologies in Energy and Electrical Engineering, 2020Millimeter wave (mm-wave) is today’s breakthrough frontier for emerging wireless mobile cellular networks, wireless local and personal area networks, simultaneous energy/data transfer, wearable networks, vehicular communications and radar. Directive antennas emerge as a key component in most of these applications driven by the requirement to meet ...
Youssef El Gholb +3 more
openaire +1 more source
Reconfigurable leaky-wave antennas
2018In 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 +2 more
openaire +1 more source
Propagation characteristics of leaky waves on a 2D periodic leaky-wave antenna
2017 IEEE MTT-S International Microwave Symposium (IMS), 2017A two-dimensional (2D) periodic leaky-wave antenna consisting of a periodic distribution of rectangular patches on a grounded dielectric substrate, excited by a narrow slot in the ground plane, is studied here. The TM0 surface wave that is normally supported by a grounded dielectric substrate is perturbed by the presence of the periodic patches to ...
Sohini Sengupta +2 more
openaire +1 more source
A leaky-wave groove antenna at optical frequency
Journal of Applied Physics, 2012In the framework of nanoantennas functioning at optical frequencies, we present here a new kind of leaky-wave antenna realized as a groove in an aluminum superstrate, supported by a silver substrate. The antenna works in the optical frequency range where the silver acts as a dielectric with equivalent refractive index between zero and one.
POLEMI, Alessia, Stefano Maci
openaire +4 more sources
Single-Conductor Strip Leaky-Wave Antenna
IEEE Transactions on Antennas and Propagation, 2003The radiation characteristics of a single-conductor strip leaky-wave antenna is investigated. This structure has only a single-conductor strip on a substrate without a background plane. The broadband characteristics of the first higher order space-wave mode render this structure a broadband antenna. These result in a very wide leaky region.
null Wanchu Hong, null Yu-De Lin
openaire +1 more source
Graphene terahertz leaky-wave antennas
2019In 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 +3 more
openaire +1 more source
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
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
A Reconfigurable Leaky Wave Antenna
2023 33rd International Conference Radioelektronika (RADIOELEKTRONIKA), 2023Jan Machac +2 more
openaire +1 more source
Design considerations for leaky-wave antennas
Proceedings of the Institution of Electrical Engineers, 1976General radiation and frequency-scanning characteristics of leaky-wave antennas of infinite length as well as finite length are described. Analytical expressions for gain, side-lobe level and efficiency of a finite-length leaky-wave antenna, for which the propagation constant does not vary along the length of the antenna, are derived. These expressions
I.J. Bahl, K.C. Gupta
openaire +1 more source
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
openaire +1 more source