Antenna With Two Folded Strips Coupled to a T-Shaped Monopole

Chang, The-Nan; Chan, Yi-Lin

doi:10.2528/pierm17082102

Cited by 2 publications

(3 citation statements)

References 13 publications

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“…In all the cases, the simulated and measured results are in good agreements. For the flat antenna, the less stringent criterion of 6 dB return loss is satisfied for the entire range of 2.7-6.8 GHz, which is acceptable for many short-range applications [34,35]. It can also be concluded from Fig.…”

Section: Reflection Coefficientmentioning

confidence: 99%

A Highly Bendable Log-Periodic Array Antenna for Flexible Electronics

Abutarboush¹,

Siddiqui²,

Wali³

et al. 2020

PIER M

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An eleven element log-periodic dipole-array (LPDA) antenna, occupying a surface area of only 90 × 52 mm 2 , printed on an ultra-thin flexible Kapton substrate of thickness 0.035 mm, is proposed. The antenna operates with a stricter 10 dB reflection coefficient bound in the frequency bands 2.75-3.53 GHz and 4-6.2 GHz. For a less stringent bound of 6 dB (which is acceptable for wearable applications), it operates in the wider range of 2.7-6.8 GHz. The antenna has an end-fire radiation pattern with a maximum measured gain of 6 dBi. The flexibility of the antenna is illustrated by reflection and radiation pattern measurements for three different radii, i.e., 50, 30, and 10 mm in both the convex and concave configurations. It is experimentally demonstrated that LPDA exhibits stable input-impedance characteristics and consistent radiation properties over the whole operating band under all bending conditions. The low cost, light weight, and flexible design, as well as the broadband performance in both concave and convex bent configurations, prove the suitability of the antenna for the contemporary flexible electronic devices.

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Section: Reflection Coefficientmentioning

confidence: 99%

A Highly Bendable Log-Periodic Array Antenna for Flexible Electronics

Abutarboush¹,

Siddiqui²,

Wali³

et al. 2020

PIER M

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“…In brief, experiments have been conducted on HSS tubular members of varying cross-sectional geometries, including rectangular hollow sections (RHS) [4][5][6], square hollow sections (SHS) [4,7], circular hollow sections (CHS) [8] and elliptical hollow sections (EHS) [9][10][11]. These studies include testing in a variety of loading modes, including compression [5,10], bending [7,11,12,13], localized bearing [6] and combined bending and compression [4]. Research into the behaviour of HSS connections includes experimental and numerical analysis of bolted endplate connections [14][15][16] and of welded connections [17,18].…”

Section: Introductionmentioning

confidence: 99%

“…The body of previous research regarding HSS members is extensive; a thorough review of testing of HSS tubulars members has been compiled by [3]. In brief, experiments have been conducted on HSS tubular members of varying cross-sectional geometries, including rectangular hollow sections (RHS) [4][5][6], square hollow sections (SHS) [4,7], circular hollow sections (CHS) [8] and elliptical hollow sections (EHS) [9][10][11]. These studies include testing in a variety of loading modes, including compression [5,10], bending [7,11,12,13], localized bearing [6] and combined bending and compression [4].…”

Section: Introductionmentioning

confidence: 99%

Fire performance of connections between high‐strength steel tubular members

McCann

Wang

2021

ce papers

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An investigation is conducted into the behaviour of bolted endplate connections between high‐strength steel tubular members at elevated temperatures. Experiments are described where assemblies comprising Grade S460 steel square hollow sections connected via bolted endplates are heated to a target temperature between 150°C and 750°C using ceramic heating pads. The assembly, which is inclined at 45° to the horizontal, is then loaded vertically, thus generating combined bending and axial thrust in the members. The in‐plane vertical deflection, the applied load and temperatures at various points were measured. Results for the ultimate loads, equilibrium paths and the observed failure modes are discussed along with the influence of temperature on these features. A complementary nonlinear finite element analysis of the experimental assemblies is also described. Material models incorporating temperature‐dependent strengths, stiffnesses and strain hardening relationships available from the literature are employed, with temperature fields calibrated using steel temperatures recorded during the experiments applied to the models. It is shown that good agreement exists between the ultimate loads, equilibrium paths and failure modes predicted by the numerical models and those observed in the experiments, thus validating the modelling approach. It is found that, at lower temperatures, buckling of the endplate was the governing mode of failure. With increasing temperature, the mode of failure transitions to flexure in the beam and column stubs, thus suggesting that a relative degree of fixity is offered by the connections at the higher temperatures.

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Antenna With Two Folded Strips Coupled to a T-Shaped Monopole

Cited by 2 publications

References 13 publications

A Highly Bendable Log-Periodic Array Antenna for Flexible Electronics

A Highly Bendable Log-Periodic Array Antenna for Flexible Electronics

Fire performance of connections between high‐strength steel tubular members

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