Results 101 to 110 of about 14,861 (353)

Filtering antenna with two-octave harmonic suppression [PDF]

open access: yes, 2016
A novel 2nd–order antenna with filtering performance and two-octave harmonic suppression is proposed. In order to reduce the effects of the harmonics of the antenna, two types of antennas (PIFA and patch) with different resonant characteristics are ...
Cheng, Zhiqun   +3 more
core   +1 more source

4D‐Printed Magneto‐Plasmonic Microrobots for Programmable Spatiotemporal De‐Icing

open access: yesAdvanced Functional Materials, EarlyView.
A 4D‐printing strategy is introduced to achieve programmable de‐icing devices. By aligning gold–magnetite nanofillers within a photosensitive resin, the printed structures exhibit dual magnetic and plasmonic functionalities, enabling precise spatio‐temporal ice removal through thermoplasmonic effects.
Amélie Pérot   +7 more
wiley   +1 more source

Wideband Series-Fed Patch Antenna Array With High Gain and Low Sidelobe: Linearly and Circularly Polarized for 5G V2X Applications

open access: yesIEEE Open Journal of Antennas and Propagation
This paper presents a single-element linearly polarized (LP) patch antenna characterized by a wide impedance bandwidth and low profile, optimized for 5G V2X applications.
Khaled A. Alblaihed   +5 more
doaj   +1 more source

Shaping of Biohybrid Functional Living Materials

open access: yesAdvanced Functional Materials, EarlyView.
This work demonstrates a strategy for shaping living mycelium into functional materials by directing its natural growth. Nanoparticles armor hyphae, micron‐scale particles entangle within the network, and printed hydrogel architectures steer expansion, creating defined geometries.
Sarah Schyck   +3 more
wiley   +1 more source

U-Slot Patch Antenna Principle and Design Methodology Using Characteristic Mode Analysis and Coupled Mode Theory

open access: yesIEEE Access, 2019
Patch antennas incorporating a U-shaped slot are well-known to have relatively large (about 30%) impedance bandwidths. This work uses characteristic mode analysis (CMA) to explain the impedance behavior of a classic U-slot patch geometry in terms of ...
John J. Borchardt, Tyler C. Lapointe
doaj   +1 more source

Reconfigurable Reflectarrays and Array Lenses for Dynamic Antenna Beam Control: A Review

open access: yes, 2013
Advances in reflectarrays and array lenses with electronic beam-forming capabilities are enabling a host of new possibilities for these high-performance, low-cost antenna architectures.
Hum, Sean Victor   +1 more
core   +1 more source

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

High Gain Dual Parasitic Patch Loaded Wideband Antenna for 28 GHz 5G Applications

open access: green, 2021
Wahaj Abbas Awan   +2 more
openalex   +2 more sources

Clean Up Behind You ‐ Novel Patterning Approach for Solid Immersion Lenses

open access: yesAdvanced Functional Materials, EarlyView.
A focused ion beam (FIB) milling strategy enables rapid fabrication of solid immersion lenses (SILs) with smooth, debris‐free surfaces eliminating the need for post‐processing. The optimized pattern improves efficiency and surface quality. SILs containing NV centers are also investigated, confirming the technique's suitability for quantum and photonic ...
Aleksei Tsarapkin   +10 more
wiley   +1 more source

Gain Enhanced Circularly Polarized Antenna With RCS Reduction Based on Metasurface

open access: yesIEEE Access, 2018
In this paper, a gain-enhanced circularly polarized (CP) patch antenna with in-band and out-of-band radar cross section (RCS) reduction is designed, fabricated, and analyzed.
Zhaosong Liu, Ying Liu, Shuxi Gong
doaj   +1 more source

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