Results 91 to 100 of about 639,224 (342)
Small-Size Reconfigurable Loop Antenna for Mobile Phone Applications
IEEE Access, 2016 A small-size reconfigurable loop antenna for mobile phone applications with a compact volume of 55 × 5 × 3 mm3 is proposed. In addition to the traditional three loop antenna modes, namely, 0.5-λ, 1-λ, and 1.5-λ modes ...
Hao Wang +6 more
doaj +1 more source
Trifrequency Reconfigurable Linear Irregular Array with Beam Deflection Capability in X/Ku/Ka-Bands
International Journal of Antennas and Propagation, 2020 This paper proposes a trifrequency reconfigurable antenna (FRA), which can work in the X-band, Ku-band, and Ka-band, by controlling only two RF MEMS switches.
Ming Li +3 more
doaj +1 more source
, 2020 Recently there has been a flurry of research on the use of reconfigurable intelligent surfaces (RIS) in wireless networks to create smart radio environments.
ElMossallamy, Mohamed A. +5 more
core
Advanced Functional Materials, EarlyView.A single cell type Electro‐chromo‐emissive (ECECL) device integrating synchronized electrochromic (EC) and electrochemiluminescent (ECL) functions is developed using a mixed ionic‐electronic conductor (MIEC). A MIEC layer reduces ionic/electronic resistance, enabling ultrafast switching and enhanced optical contrast.
Hwandong Jang +5 more
wiley +1 more source
A Low-Cost CPW-Fed Multiband Frequency Reconfigurable Antenna for Wireless Applications
Electronics, 2019 A novel, cedar-shaped, coplanar waveguide-fed frequency reconfigurable antenna is proposed. The presented antenna uses low-cost FR4 substrate with a thickness of 1.6 mm.
T. Khan +4 more
semanticscholar +1 more source
A 1-Bit Electronically Reconfigurable Reflectarray Antenna in X Band
IEEE Access, 2019 In this paper, a fully electronically reconfigurable reflectarray antenna that has 14×14 reflecting elements and features a higher aperture efficiency was designed, fabricated, and tested.
Hai Zhang +4 more
doaj +1 more source
Advanced Coordinated Beamforming for the Downlink of Future LTE Cellular Networks
, 2016 Modern cellular networks in traditional frequency bands are notoriously interference-limited especially in urban areas, where base stations are deployed in close proximity to one another.
Alexandropoulos, George C. +3 more
core +3 more sources
4D Printing of Self‐Immolative Polymers
Advanced Functional Materials, EarlyView.The integration of self‐immolative polymers (SIPs) into light‐based 3D printed structures is presented as a new “living” 4D printing strategy. By exploiting their metastability and stimuli‐responsiveness, SIP‐containing printed objects can undergo rapid and triggered degrowth under ambient conditions and subsequent regrowth through polymer ...
Johannes Markhart +3 more
wiley +1 more source
Advanced Functional Materials, EarlyView.A new class of living liquid metal composites is introduced, embedding Bacillus subtilis endospores into eutectic gallium–indium (EGaIn). The spores enhance droplet coalescence, strengthen interfacial conductivity, and provide on‐demand electrogenic functionality after germination. The composites exhibit high conductivity, self‐healing, patternability,
Maryam Rezaie, Yang Gao, Seokheun Choi
wiley +1 more source
Design of a LP, RHCP and LHCP Polarization-Reconfigurable Holographic Antenna
IEEE Access, 2019 In this paper, the feasibility of utilizing the microwave hologram to realize the high-gain radiation with polarization agility performance is investigated, and an effective method to design the polarization-reconfigurable holographic antenna is ...
Mei Li, Ming-chun Tang, Shaoqiu Xiao
doaj +1 more source