Results 31 to 40 of about 3,090,742 (298)

Noise Performance of Heterojunction DDR MITATT Devices Based on at W-Band

Active and Passive Electronic Components, 2013
Noise performance of different structures of anisotype heterojunction double-drift region (DDR) mixed tunneling and avalanche transit time (MITATT) devices has been studied.
Suranjana Banerjee, Aritra Acharyya, J. P. Banerjee   +2 more
doaj   +1 more source

A Wideband 3-dB Directional Coupler in GGW for Use in V-Band Communication Systems

IEEE Access, 2020
In this article, a broadband 3-dB directional coupler is proposed using groove gap waveguide (GGW) structures. Gap waveguide technology has been introduced to overcome manufacturing and assembling challenges of different millimeter-wave components and ...
Marzieh Nasri, Davoud Zarifi, Ashraf Uz Zaman   +2 more
doaj   +1 more source

Multilevel modulated signal transmission over serial single-mode and multimode fiber links using vertical-cavity surface-emitting lasers for millimeter-wave wireless communications [PDF]

, 2007
Quadrature phase-shift keying, 16 quadrature amplitude modulation (QAM), and 64-QAM data transmission-Worldwide Interoperability for Microwave Access modulation schemes-at 6 and 20 MS/s is demonstrated for a link that emulates a cost-effective 1.55-m ...
Shen, Pengbo, Nkansah, Anthony, Gomes, Nathan J., Das, Anjali   +3 more
core   +1 more source

Millimeter-wave reconfigurable antenna based on VO2 ink achieved by a simple process

Materials & Design
The growth of communication demands have boosted the development of millimeter-wave technology, as the spectrum migrates to higher frequencies. And reconfigurable antennas emerge as a promising solution for complex communication systems.
Suwu Ma, Wanchen Yang, Jinghao Li, Quan Xue, Wenquan Che   +4 more
doaj   +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, Jacob J. Whittaker, Dirk J. Slotboom, Albert Guskov   +3 more
wiley   +1 more source

Mosaic Based Optimization of NRD Guide Devices Using Binary Evolutionary Approaches and 2D-FVFEM

IEEE Access, 2022
In this paper, efficient optimal design approaches based on mosaic optimization concept are developed for NRD guide devices to realize the high-performance compact millimeter-wave integrated circuit.
Tahir Bashir, Keita Morimoto, Akito Iguchi, Yasuhide Tsuji, Tatsuya Kashiwa   +4 more
doaj   +1 more source

High-gain millimeter-wave AlGaN/GaN transistors

, 2022
S.3112-3118In this paper, the fabrication and performance of common-source (CS) and common-gate transistors for operation at millimeter-wave frequencies are presented.
Brückner, Peter, Schwantuschke, Dirk, Mikulla, Michael, Quay, Rüdiger, Ambacher, Oliver   +4 more
core   +1 more source

Importin 7 mediates the nuclear import of HIV‐1 integrase via a specific interacting interface

FEBS Open Bio, EarlyView.
HIV‐1 integrase enables viral DNA integration into the host genome. By binding to the core domain of the host protein Importin 7 via its C‐terminal domain, the integrase is transported across the nuclear membrane into the nucleus, where integration of the viral genome into host DNA takes place. This translocation is a critical step for subsequent viral
Juana Bana, Avigail Yariv, Tal Oppenheim, Hadar Amartely, Dana Reichmann, Oded Livnah   +5 more
wiley   +1 more source

Nonlinearity and Noise Effects in Multi-level Signal Millimeter-Wave over Fiber Transmission using Single- and Dual-Wavelength Modulation [PDF]

, 2010
We transmit multilevel quadrature amplitude modulation (QAM) data-IEEE 802.16 schemes-at 20 MSps and an orthogonal frequency-division multiplexing (OFDM) 802.11 g signal (54 Mbps) with a 25 GHz millimeter-wave over fiber system, which employs a dual ...
Jeanne James, James, Jeanne, Anthony Nkansah, Shen, Pengbo, Xing Liang, Pengbo Shen, Nkansah, Anthony, Gomes, Nathan J., Liang, Xing, Nathan J. Gomes   +9 more
core   +1 more source

The development of a compact millimeter wave scanning system

, 2022
Art. 6105003The following paper describes the development of an autonomous and compact millimeter wave scanning measurement system (SAMMI - Stand Alone Millimeter wave Imager) which works in the W-Band (CW@78GHz).
Krebs, C., Heinen, S., Gütgemann, S., Brauns, R., Kose, S., Warok, P., Hommes, A., Teichrib, W., Nüßler, D.   +8 more
core   +1 more source