Results 11 to 20 of about 67,724 (288)

Crumpled textile antennas [PDF]

open access: yes, 2009
The performance of a dual-band textile antenna under two-dimensional crumpling conditions is described. Both input impedance and radiation patterns are investigated based on numerical and experimental methods at 2.45 and 5.8 GHz.
Kellomaki   +6 more
core   +1 more source

A low sidelobe 77 GHz centre‐fed microstrip patch array antenna

open access: yesIET Microwaves, Antennas & Propagation, 2023
A low sidelobe 77 GHz centre‐fed microstrip patch array antenna is proposed for automotive radar application. The proposed antenna comprises eight linear antenna arrays, each of which is centre‐fed by a coplanar waveguide with ground transmission line at
Qian Chen   +7 more
doaj   +1 more source

A reconfigurable electrically-small antenna operating in the 'DC' mode [PDF]

open access: yes, 2003
In this paper, an explanation of the design of an electronically tunable electrically-small antenna, operating in the 'DC' mode is presented. Although this antenna has a narrow instantaneous bandwidth, electronic tuning allows a large band to be covered ...
Craddock, IJ   +3 more
core   +2 more sources

Multiband Sierpinskl fractal patch antenna [PDF]

open access: yes, 2000
The multiband behavior of the Sierpinski patch antenna is described, and a new technique to improve the multiband behavior from the point of view of the radiation patterns is introduced.
Borja Borau, Carmen, Romeu Robert, Jordi
core   +1 more source

Study on Horizontally Polarized Omnidirectional Microstrip Antenna

open access: yesInternational Journal of Antennas and Propagation, 2016
A horizontally polarized omnidirectional microstrip antenna is proposed in this paper. The structure of designed antenna is with two back-to-back horizontally polarized microstrip antenna elements.
Kun Wei   +4 more
doaj   +1 more source

Large area subwavelength cavity antenna with planar metamaterials

open access: yesAIP Advances, 2019
We present a kind of large area subwavelength cavity antenna with artificial permeability-negative metamaterials at GHz range. The antenna has the advantages of flatness, ultra-thin thickness, high gain and good directivity. The optimal receiving area of
Guang Lu   +9 more
doaj   +1 more source

Dual-band pattern reconfigurable antenna for wireless MIMO applications

open access: yesICT Express, 2016
In this study, a dual-band pattern reconfigurable antenna is proposed for 2.4 and 5.8 GHz wireless multiple-input multiple-output (MIMO) applications.
Jeong Keun Ji
doaj   +1 more source

Switchable filtering in vivaldi antenna [PDF]

open access: yes, 2010
Presented is a new frequency switchable Vivaldi antenna that has a capability to operate in a wideband mode (1-3 GHz) and reconfigure to six different subbands of operations.
Gardner, P.   +3 more
core   +1 more source

Method of phase compensation and pattern transformation for array antennas with arbitrarily oriented circularly polarised elements

open access: yesIET Microwaves, Antennas & Propagation, 2023
The inconsistent polarised directions and the radiation pattern transformation of the elements need to be considered in the analysis and simulation of large circularly polarised conformal arrays. Without relying on full‐wave simulations of the full array,
Zhongtian Jing, Yubing Han
doaj   +1 more source

Numerical and experimental evaluation of phantoms for off-body wireless communications [PDF]

open access: yes, 2011
The effects of a numerical and a physical phantom on different antenna configurations are evaluated. Input response, radiation patterns and efficiency are considered in the presence of the phantoms.
Giddens, H   +3 more
core   +2 more sources

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