Results 51 to 60 of about 76,690 (306)

Improvement of 5.8 GHz Band Patch Antenna with Metamaterial

open access: yesJournal of Measurement Science and Instrumentation, 2010
A patch antenna,a metamaterial patch antenna and a proposed metamaterial patch antenna,are simulated and compared.Simulation results show that the proposed antenna can concentrate so well radiation energy into broadside direction that the antenna gain is
Nam-ki LEE, Seung-in YANG
doaj  

A 41% bandwidth microstrip patch antenna

open access: yesDefense and Security Studies, 2023
This work contains a wideband DS (defected-ground-structure) microstrip patch antenna. Initially, the intention of this work was based on realizing a sub- 6 GHz 5G microstrip patch antenna, but through many experimentations, we inadvertently stumbled ...
Mehmet Yusuf Imeci   +2 more
doaj  

Textile broadband e-patch at ISM band [PDF]

open access: yes, 2007
This paper presents early results of an investigation into the fabrication of a textile E-shaped patch antenna suitable for broadband communications in the ISM band (2.4 GHz - 2.5 GHz).
Klemm, M   +3 more
core   +2 more sources

Infrared laser sampling of low volumes combined with shotgun lipidomics reveals lipid markers in palatine tonsil carcinoma

open access: yesMolecular Oncology, EarlyView.
Nanosecond infrared laser (NIRL) low‐volume sampling combined with shotgun lipidomics uncovers distinct lipidome alterations in oropharyngeal squamous cell carcinoma (OPSCC) of the palatine tonsil. Several lipid species consistently differentiate tumor from healthy tissue, highlighting their potential as diagnostic markers.
Leonard Kerkhoff   +11 more
wiley   +1 more source

A Novel Dual-Broadband Circularly Polarized Patch Antenna for Precise Satellite Navigation

open access: yesInternational Journal of Antennas and Propagation, 2019
This paper presents a novel dual-band circularly polarized patch antenna for precise satellite navigation. The radiation elements are composed of the inner cross-shaped patch and the outer annular patch which are printed on the same surface of one ...
Fumin Lin   +5 more
doaj   +1 more source

O-Shape Fractal Antenna Optimized Design with Broad Bandwidth and High Gain for 6G Mobile Communication Devices

open access: yesFractal 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
doaj   +1 more source

Directional GPS antenna for indoor positioning applications [PDF]

open access: yes, 2009
In this paper, a directional GPS antenna for L1 frequency - 1575 MHz - with RHCP and a high directive gain is proposed for indoor positioning applications.
Ozsoy, Kerem   +3 more
core  

Conformal Antenna Array for Millimeter-Wave Communications: Performance Evaluation

open access: yes, 2015
In this paper, we study the influence of the radius of a cylindrical supporting structure on radiation properties of a conformal millimeter-wave antenna array.
Bisognin, A.   +7 more
core   +3 more sources

Frequency reconfigurable patch antenna for 4G LTE applications [PDF]

open access: yes, 2018
A compact printed multi-band frequency reconfigurable patch antenna for 4G LTE applications is presented in this paper (50 x 60 x 1.6 mm3). The antenna consists of W-shaped and Inverted-U shaped patch lines connected in a Tree-shape on the front side of ...
Abbasi, Qammer H.   +4 more
core   +1 more source

Genetic attenuation of ALDH1A1 increases metastatic potential and aggressiveness in colorectal cancer

open access: yesMolecular Oncology, EarlyView.
Aldehyde dehydrogenase 1A1 (ALDH1A1) is a cancer stem cell marker in several malignancies. We established a novel epithelial cell line from rectal adenocarcinoma with unique overexpression of this enzyme. Genetic attenuation of ALDH1A1 led to increased invasive capacity and metastatic potential, the inhibition of proliferation activity, and ultimately ...
Martina Poturnajova   +25 more
wiley   +1 more source

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