Results 31 to 40 of about 16,921 (260)

Antenna structures based on combined slot-vibrator emitters with impedance passive elements

open access: yesВісник Харківського національногоуніверситету імені В.Н. Каразіна. Серія: Радіофізика та електроніка
Relevance. The research is aimed at solving current problems related to the construction of mathematical models, methods and algorithms for calculating complex multi-element radiating structures, antenna systems and arrays, determining the physical ...
Berdnyk S. L.   +4 more
doaj   +1 more source

Circularly Polarized Dielectric Resonator Antenna Arrays with Fractal Cross-Slot-Coupled DRA Elements

open access: yesInternational Journal of Antennas and Propagation, 2017
In the design of circularly polarized (CP) dielectric resonator antenna (DRA) arrays, the regular-shaped DRAs with simple feeding configurations are mostly used as array elements to make the design procedure more efficient.
Jia-Hong Lin   +3 more
doaj   +1 more source

Substrate Optimization for Integrated Circuit Antennas [PDF]

open access: yes, 1982
The reciprocity theorem and integral equation techniques are employed to determine the properties of integrated-circuit antennas. The effect of surface waves is considered for dipole and slot elements on substrates.
Alexopoulos, Nicolaos G.   +2 more
core   +2 more sources

Cross-Configuration Substrate Integrated Waveguide Beamforming Network for 1D and 2D Beam Patterns

open access: yesIEEE Access, 2019
This paper presents the simulated and measured results of a dual-layer substrate integrated waveguide (SIW) beamforming network utilizing an 8 × 8 cross-configuration Butler matrix over a frequency range of 28.5 to 31.5 GHz. By arranging the input
Chad Bartlett, Jens Bornemann
doaj   +1 more source

A New Arraying Technique for Band-Switchable and Polarization-Reconfigurable Antenna Arrays With Wide Bandwidth

open access: yesIEEE Open Journal of Antennas and Propagation, 2022
Modern antenna arrays desire antenna apertures which can support a wide frequency range and reconfigurable polarization states. It is challenging to realize such antenna apertures with high isolation among different antenna elements when they are closely
J. Huang, M. Shirazi, X. Gong
doaj   +1 more source

Designs of Textile Antenna Arrays for Smart Clothing Applications

open access: yesAUTEX Research Journal, 2018
In this work, three designs of textile antennas, namely, a rectangular microstrip patch antenna, annular slot antenna, and planar inverted-F antenna (PIFA), operating in the 2.45 GHz WLAN band were developed for smart clothing applications.
Chin Kuo-Sheng   +3 more
doaj   +1 more source

A Continuous Beam Steering Slotted Waveguide Antenna Using Rotating Dielectric Slabs

open access: yes, 2018
The design, simulation and measurement of a beam steerable slotted waveguide antenna operating in X band are presented. The proposed beam steerable antenna consists of a standard rectangular waveguide (RWG) section with longitudinal slots in the broad ...
Ghasemi, Amirhossein   +1 more
core   +1 more source

A Compact Tri-band Printed Antenna for MIMO Applications [PDF]

open access: yes, 2015
In this paper, a compact tri-band printed multi-input multi-output (MIMO) antenna with high isolation is presented to operate within WLAN and WiMAX frequency bands.
Wang, Xuetian, Zang, Jiawei
core   +2 more sources

Dual-Band Performance Evaluation of Time-Modulated Circular Geometry Array With Microstrip-Fed Slot Antennas

open access: yesIEEE Access, 2019
This paper applies time modulation to deal with the design of dual-band antenna arrays in a circular geometry using a micro-strip-fed slot antenna as an element in the frequencies of 2.4 and 5.5 GHz.
Zenon Medina   +3 more
doaj   +1 more source

A slot antenna array with low mutual coupling for use on small mobile terminals [PDF]

open access: yes, 2011
In order to take full advantage of the benefits to be obtained by using MIMO techniques for mobile communications, it is necessary to use an antenna array which is both compact and also has low mutual coupling between ports.
Dumanli, S, Paul, DL, Railton, CJ
core   +2 more sources

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