Results 81 to 90 of about 92,941 (196)

Location Optimization for Square Array Antennas Using Differential Evolution Algorithm

International Journal of Antennas and Propagation, 2016
In recent works thinned arrays giving minimum peak sidelobe levels for planar square antenna arrays are obtained using Hadamard difference sets. In the current work thinned array configurations giving lower peak sidelobe levels than those given in the ...
Erkan Afacan
doaj   +1 more source

A finite element-boundary integral method for conformal antenna arrays on a circular cylinder [PDF]

Conformal antenna arrays offer many cost and weight advantages over conventional antenna systems. In the past, antenna designers have had to resort to expensive measurements in order to develop a conformal array design.
Kempel, Leo C., Volakis, John L., Woo, Alex C., Yu, C. Long   +3 more
core   +1 more source

Pulsed Electromagnetic Field Radiation from Slot Antennas [PDF]

, 2011
Jednoduché dvojrozměrné anténní zářiče, které slouží jako stavební bloky anténních polí, jsou analyticky analyzovány v časové oblasti. Jako hlavní nástroj pro analýzu je použita Cagniard-DeHoopova metoda.
Štumpf, Martin
core  

Estimation and Minimization of the Cramer-Rao lower bound for radio direction-finding on the azimuth and elevation of planar antenna arrays

Journal of Communications Software and Systems, 2019
In this paper an approach of obtaining optimal planar antenna arrays consisting of omnidirectional sensors is proposed. The novelty of the proposed approach is to apply an exact expression of the Cramer-Rao lower bound for an arbitrary planar antenna ...
Ilia Peshkov, Yuri Nechaev
doaj  

OAM waves with fewer redundant OAM modes generated by two circularly polarized antenna arrays

ICT Express
Two circularly polarized antenna arrays, which reduce two redundant OAM modes, are proposed in this paper. One antenna array is composed of 8 right-handed circularly polarized (RHCP) antennas and radiates OAM mode l in x component, OAM mode l in y ...
Dandan Liu, Sentao Liu, Wei Wu, Yayun Cheng, Liangqi Gui   +4 more
doaj   +1 more source

Low-Sidelobe Series-Fed Microstrip Antenna Array With Defected Ground Structure for Vehicular Communications

IEEE Access
Series-fed microstrip antenna (MSA) arrays are widely used in integrated RF modules for vehicular communications due to their low feed-network loss and high radiation efficiency.
Aradhana Singh Kaintura, Rajib Kumar Panigrahi   +1 more
doaj   +1 more source

Antenna technology for advanced mobile communication systems [PDF]

The onboard antenna front end is the key subsystem conditioning configuration and performance of mobile communication satellites. The objectives of this paper are to demonstrate this key role and to review L-band satellite antenna technology for earth ...
Rammos, Emmanuel, Roederer, Antoine, Rogard, Roger   +2 more
core   +1 more source

A compact SiGe D-band power amplifier for scalable photonic-enabled phased antenna arrays. [PDF]

Sci Rep, 2023
Broucke R, Singh N, Van Osta M, Van Kerrebrouck J, Demeester P, Lemey S, Torfs G.   +6 more
europepmc   +1 more source

Cloaking of Equilateral Triangle Patch Antennas and Antenna Arrays with Planar Coated Metasurfaces. [PDF]

Sensors (Basel), 2023
Pawar S, Skinner H, Suh SY, Yakovlev A.
europepmc   +1 more source

Investigation of mutual coupling coefficients in dual-polarized antenna arrays

Физика волновых процессов и радиотехнические системы
Background. Antenna arrays are widely used in various fields of radio engineering, such as radio and telecommunications, satellite communication systems, etc. One of the important characteristics of an antenna array is its radiation pattern.
Olga V. Bazhanova, Alexander A. Kononov, Ksenia V. Smuseva, Vladislav A. Stepkin, Grigory K. Uskov   +4 more
doaj   +1 more source