Results 31 to 40 of about 40,770 (306)

Zero Index Metamaterial for Designing High-Gain Patch Antenna

open access: yesInternational Journal of Antennas and Propagation, 2013
A planar wideband zero-index metamaterial (ZIM) based on mesh grid structure is studied. It is demonstrated that the real part of the index approaches zero at the wideband covering from 9.9 GHz to 11.4 GHz. Two conventional patch antennas whose operating
Yahong Liu   +3 more
doaj   +1 more source

Small Microstrip Patch Antennas

open access: yesElectronics Letters, 1995
As stated in Chapter 1, one of the many advantages of microstrip patch technology over its competitors is its low profile and hence small volume. Another key advantage of this printed antenna is the relative ease in which it can be connected to the feed network, as was highlighted in Chapter 2.
openaire   +1 more source

Four-Element Microstrip Patch Array Antenna with Corporate-Series Feed Network for 5G Communication

open access: yesInternational Journal of Antennas and Propagation, 2020
The paper proposes a simple four-element microstrip patch array antenna fed with corporate-series technique. The paper compares the proposed design with four-element antennas fed with only series-fed and corporate-fed microstrip antennas.
Janam Maharjan, Dong-You Choi
doaj   +1 more source

The impact of nonlocal response on metallo-dielectric multilayers and optical patch antennas [PDF]

open access: yes, 2012
We analyze the impact of nonlocality on the waveguide modes of metallo-dielectric multilayers and optical patch antennas, the latter formed from metal strips closely spaced above a metallic plane.
Ciracì, Cristian   +2 more
core   +3 more sources

Structural instability impairs function of the UDP‐xylose synthase 1 Ile181Asn variant associated with short‐stature genetic syndrome in humans

open access: yesFEBS Letters, EarlyView.
The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li   +2 more
wiley   +1 more source

Reduction of the In-Band RCS of Microstrip Patch Antenna by Using Offset Feeding Technique

open access: yesInternational Journal of Antennas and Propagation, 2014
This paper presents a method for implementing a low in-band scattering design for microstrip patch antennas based on the analysis of structural mode scattering and radiation characteristics.
Weiwei Xu   +4 more
doaj   +1 more source

Optimization of aperture coupled microstrip patch antennas [PDF]

open access: yes, 2010
Aperture coupled microstrip patch antennas (ACMPA) are special class of microstrip antennas with high gain and wide impedance bandwidth. These antennas differ from other microstrip antennas with their feeding structure of the radiating patch element ...
Dogan, Mustafa   +5 more
core  

Mechanisms of IgE‐mediated food allergy and the role of allergen‐specific B cells

open access: yesFEBS Letters, EarlyView.
Food allergy arises when allergen‐specific B cells preferentially produce immunoglobulin E (IgE) antibodies against harmless foods. This article explains the mechanisms driving IgE‐mediated reactions, highlights the central role of these B cells, and discusses how natural tolerance (NT) and oral immunotherapy (OIT) can reshape allergic immune responses.
Juan‐Felipe López   +2 more
wiley   +1 more source

Cylindrically-bent rectangular patch antennas: novel modeling techniques for resonance frequency variation and uncertainty [PDF]

open access: yes, 2015
Wearable textile antennas are basic components in body-centric communication systems. Flexible wearable patch antennas, when integrated into a body-worn garment are subjected to bending, causing variation in the resonance frequency when compared to the ...
Boeykens, Freek   +2 more
core   +1 more source

Electromagnetic analysis and performance comparison of fully 3D-printed antennas [PDF]

open access: yes, 2019
In this work, the possibility of directly prototyping antennas by exploiting additive manufacturing 3D-printing technology is investigated. In particular, the availability of printable filaments with interesting conductive properties allows for printing ...
Casula, A.   +8 more
core   +1 more source

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