Results 61 to 70 of about 2,161,600 (303)
A Four-Port Dual-Band Dual-Polarized Antenna for Ku-Band Satellite Communications
Applied SciencesThis paper presents the development of a four-port dual-band dual-polarized antenna for transmitting/receiving (Tx/Rx) applications in Ku-band satellite communications.
Son Trinh-Van +3 more
doaj +1 more source
FEBS Letters, EarlyView.Encapsulins are protein nanocompartments that play an important role in iron storage. In the Myxococcus xanthus encapsulin system, two cargo proteins called EncB and EncC contribute to iron mineralization. Here, we show that EncB and EncC generate iron‐containing minerals with distinct chemical compositions, suggesting that the composition of stored ...
Harry B. McDowell +2 more
wiley +1 more source
Journal of Microwaves, Optoelectronics and Electromagnetic ApplicationsA novel FSS-Backed reflectarray unit cell is introduced to design a dual-band X/Ku Reflectarray Antenna (RA). A Ku-band RA based on this FSS-Backed cell element is designed and located on the top of a conventional X-band RA.
Iman Derafshi +3 more
doaj +1 more source
Novel double-band input coupler for gyroklystron and gyro-TWT
AIP Advances, 2021 A novel input coupler that can operate in two different frequency bands separately is proposed in this paper. The dual-band (X/Ku) signals are input by two rectangular waveguides, respectively, in particular, a Bragg reflector is inserted in one of the ...
Xiaoyan Wang +3 more
doaj +1 more source
A Dual-Band Approach for Backscattering Modulation
2024 IEEE International Conference on RFID Technology and Applications (RFID-TA)In typical passive UHF RFID systems, tags rely on backscattering, where they modulate a reflected signal by switching impedance states, powered solely by the reader's RF signal. In contrast, active RFID tags offer enhanced communication capabilities but require an internal power source.
Sennesael, Joryan +3 more
openaire +3 more sources
Dual-band pin-patch antenna for wi-fi applications [PDF]
, 2008 The pin-patch antenna provides a low-profile monopolar element suitable for wireless access point requirements. This design concept is extended here to provide dual-band operation.
Callaghan, Peter, Batchelor, John C.
core +1 more source
Evaluation of the Dual-Band PA Nonlinear Behavior for 5G Signals
, 2023 In this paper, the assessment of the digital linearization technique’s influence on a dual-band power amplifier was carried out. The linearization technique requires utilization of the second-order nonlinear signals in the baseband which modulate the ...
Atanasković, Aleksandar S. +4 more
core +1 more source
Structural and biochemical analysis of a B12 superbinder
FEBS Letters, EarlyView.BtuG proteins are vitamin B12 scavengers in Bacteroides thetaiotaomicron, a dominant human gut bacterium. We present crystal structures of three BtuG homologs bound to cobalamin and its precursor cobinamide, revealing picomolar binding affinities, among the highest known for any natural protein.
Jose M. Martinez Felices +3 more
wiley +1 more source
Integrated Dual-Band Filtering/Duplexing Antennas
IEEE Access, 2018 In this paper, the state-of-the-art integrated filtering antennas with dual-band operation are first reviewed. Then, two designs of dual-band microstrip filtering antennas with a low-frequency ratio are presented.
Chun-Xu Mao +6 more
doaj +1 more source
The Shewanella oneidensis Fic enzyme SoFic targets the switch‐I region of EF‐Tu for AMPylation
FEBS Letters, EarlyView.Fic enzymes mediate diverse post‐translational modifications across all domains of life, including AMPylation. Prokaryotic EF‐Tu can be AMPylated and deAMPylated by the conserved Fic enzyme SoFic. Structural and biochemical approaches were used to characterize the effect of AMPylation on EF‐Tu, SoFic's enzymatic activities, and the enzyme‐target ...
Svenja Runge +6 more
wiley +1 more source