Results 21 to 30 of about 9,081 (117)

Microstrip annular ring slot antennas for mobile applications [PDF]

open access: yes, 1996
An annular slot on triplate feed is discussed which is suitable for use with vehicular mobile satellite systems. The slot is excited in a higher order mode and circularly polarised to give a conical radiation pattern.
Langley, Richard J., Batchelor, John C.
core   +1 more source

A Planar Multifunctional Four-Port Antenna System for Sub-Urban Mobile Tablet

open access: yesIEEE Access, 2019
A planar multifunctional four-port antenna system integrated on one substrate applied in the suburban mobile tablet is presented in this paper. The types of these antennas are selected based on different functions and the interactions between them are ...
Li Ying Nie   +3 more
doaj   +1 more source

Multiband inverted-f antenna with independent bands for small and slim cellular mobile handsets [PDF]

open access: yes, 2011
Copyright @ 2011The design of a small ultra-thin printed inverted-F antenna (PIFA) with independent control on the resonant frequency bands is proposed. The antenna consists of a slotted radiator supported by shorting walls and a small ground plane.
AbuTarboush, HF   +7 more
core   +1 more source

Switch-Reconfigurable Metal Rim MIMO Handset Antenna With Distributed Feeding

open access: yesIEEE Access, 2019
A new antenna design method together with a novel metal rim antenna is presented in this paper. The design method transforms an electromagnetic synthesis problem into a circuit problem, which can be solved in a straightforward manner.
Rasmus Luomaniemi   +3 more
doaj   +1 more source

Dual-Band Patch Antenna Matching Network Comprised of Separated Ground Layers and via Posts for Adjustable Return Current Path

open access: yesIEEE Access, 2022
This paper proposes a dual-band antenna matching network concept for millimeter-wave mobile devices. The method is deduced through an introduction of an additional matching network consisting of inductive distributed elements to formulate adjustable ...
Youngno Youn   +5 more
doaj   +1 more source

On the sensitivity of the capacity enhancement of a TDMA system with adaptive multibeam antennas [PDF]

open access: yes, 1997
The paper presents results for the likely capacity improvement when an adaptive multibeam antenna is used in conjunction with air interface parameters akin to the DCS1800 system.
Swales, SC, Tsoulos, GV, Beach, MA
core   +1 more source

A Tunable Single-Feed Triple-Band LTE Antenna With Harmonic Suppression

open access: yesIEEE Access, 2019
This paper presents a single-feed planar inverted-F antenna (PIFA) that operates at three resonant frequencies within the LTE frequency range which would result in the enhancement of the antenna bandwidth and the increase of the data-rate speed.
Abdullah J. Alazemi, Gabriel M. Rebeiz
doaj   +1 more source

Low-Profile Six-Port Circular Patch Antenna With Six Triple-Shorted Dual-Resonant 60°-Disk Sectors to Generate Six Uncorrelated Waves for Wideband Mobile MIMO Antennas

open access: yesIEEE Access, 2022
A low-profile six-port circular patch antenna generating six uncorrelated waves in a wide band of about 5.8-7.5 GHz (based on 3:1 VSWR, fractional bandwidth about 25%) is presented.
Kin-Lu Wong, Chi-Jui Ho, Wei-Yu Li
doaj   +1 more source

Linearity considerations in adaptive antenna array applications [PDF]

open access: yes, 1995
The use of adaptive antenna in mobile communications base stations is self-explanatory. It offers the potential of increased spectrum efficiency, extended range of coverage and reduced delay spread.
Xue, H   +3 more
core   +1 more source

Identification of a quantitative method for the evaluation of the environmental quality of educational centers near to antennas of base stations of mobile telephony

open access: yesTecnura, 2017
Context: The objective of this research is to define an appropriate quantitative method to evaluate the environmental quality affected by the location of antennas of base stations of mobile telephony near educative centers.
Alexander Armesto Arenas   +1 more
doaj   +1 more source

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