Results 41 to 50 of about 98,456 (356)
Applied SciencesIn this paper, we propose a stacked dual-patch antenna with 3D printed thick quasi-air substrates and a cavity wall for wideband applications. To achieve the theoretical maximum bandwidth of the patch antenna, the quality factor of the system needs to be
Doyoung Jang, Jun-Yong Lee, Hosung Choo
doaj +1 more source
Design of microstrip patch antenna for IEEE 802.16-2004 applications [PDF]
, 2011 This thesis presents microstrip patch antenna IEEE 802.16-2004 standards for microwave applications and WiMax. Narrow bandwidth (BW) is the main defect of microstrip patch antenna in wireless communication.
Al-Rawachy, Ehab Esam Dawood
core
An adaptive microstrip patch antenna for use in portable transceivers [PDF]
, 1996 This paper describes an adaptive frequency tunable microstrip patch antenna. The introduction of an adaptive feedback loop enables the patch antenna to optimise the antenna-feed impedance match.
Hilton, GS, Railton, CJ, Rostbakken, O
core +2 more sources
Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM
FEBS Letters, EarlyView.Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley +1 more source
Four-Element Microstrip Patch Array Antenna with Corporate-Series Feed Network for 5G Communication
International 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
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Fractal and Fractional, 2023 Optimization of antenna parameters is important for achieving the best design that has higher results for gain and bandwidth while also having a smaller size. One such antenna design is numerically investigated and presented in this research. The antenna
Shobhit K. Patel, Abdullah Baz
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Wide-band planar inverted-F antenna for cognitive radio [PDF]
, 2009 A wide-band Planar Inverted-F Antenna (PIFA) is presented. The proposed antenna is simply structured consist of main patch supported by shorting wall and shorting pin, fed by 50 ohm microstrip transmission line. The antenna achieves an enhanced impedance
AbuTarboush, HF +3 more
core
Multiband Sierpinskl fractal patch antenna [PDF]
, 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
An intracellular transporter mitigates the CO2‐induced decline in iron content in Arabidopsis shoots
FEBS Letters, EarlyView.This study identifies a gene encoding a transmembrane protein, MIC, which contributes to the reduction of shoot Fe content observed in plants under elevated CO2. MIC is a putative Fe transporter localized to the Golgi and endosomal compartments. Its post‐translational regulation in roots may represent a potential target for improving plant nutrition ...
Timothy Mozzanino +7 more
wiley +1 more source
Realization of Circular Polarization and Gain Enhancement for Implantable Antenna
IEEE Access, 2020 This paper proposes and investigates an implantable circularly polarized (CP) antenna with an enhanced gain. The proposed antenna consists of a pin-loaded patch and via walls around the patch.
Li-Jie Xu +4 more
doaj +1 more source