Results 51 to 60 of about 32,476 (304)

Millimeter-wave diode-grid phase shifters [PDF]

, 1988
Monolithic diode grids have been fabricated on 2-cm square gallium-arsenide wafers with 1600 Schottky-barrier varactor diodes. Shorted diodes are detected with a liquid-crystal technique, and the bad diodes are removed with an ultrasonic probe.
Chen, Howard Z., Jou, Christina F., Lam, Wayne W., Luhmann, Neville C., Jr., Rutledge, David B., Stoltz, Kjell S.   +5 more
core   +1 more source

A light‐triggered Time‐Resolved X‐ray Solution Scattering (TR‐XSS) workflow with application to protein conformational dynamics

FEBS Open Bio, EarlyView.
Time‐resolved X‐ray solution scattering captures how proteins change shape in real time under near‐native conditions. This article presents a practical workflow for light‐triggered TR‐XSS experiments, from data collection to structural refinement. Using a calcium‐transporting membrane protein as an example, the approach can be broadly applied to study ...
Fatemeh Sabzian‐Molaei, Fredrik Orädd, Konstantinos Magkakis, Magnus Andersson   +3 more
wiley   +1 more source

Sub‐THz Antenna With Graphene Enabled Beam Steering for THz Communication

Engineering Reports
This work presents a sub‐THz planar antenna designed for THz communication and sensing, featuring advanced beam steering capabilities. The antenna uses a silicon dioxide (SiO2) substrate with a copper radiating zone incorporating V‐shaped slots ...
Sher Nawaz, Waleed Tariq Sethi, Latif Jan, Mohammad Haseeb Zafar   +3 more
doaj   +1 more source

State-of-the-Art Passive Beam-Steering Antenna Technologies: Challenges and Capabilities

IEEE Access, 2023
This article reviews the latest developments of beam steering antennas that are entirely passive to realize interference-free, power-efficient, and highly secured end-to-end wireless communication.
Foez Ahmed, Khushboo Singh, Karu P. Esselle   +2 more
doaj   +1 more source

A novel green antenna phase-shift system with data acquisition boards [PDF]

, 2012
A novel green phase shifter system is proposed in this research. The system is developed by a combination of reconfigurable beam steering antennas and data acquisition (DAQ) boards. A combination of two reconfigurable beam steering antennas, located side-
Abd. Rahim, Sharul Kamal, Abdul Rahman, Tharek, Ahmad, Z. A., Jamlos, M. A., Jamlos, M. F., Jusoh, M., Kahar, N. F., Kamarudin, Muhammad Ramlee, Malek, M. F., Romli, M. A.   +9 more
core  

Analysing the significance of small conformational changes and low occupancy states in serial crystallographic data

FEBS Open Bio, EarlyView.
This protocol paper outlines methods to establish the success of a time‐resolved serial crystallographic experiment, by means of statistical analysis of timepoint data in reciprocal space and models in real space. We show how to amplify the signal from excited states to visualise structural changes in successful experiments.
Jake Hill, Yelyzaveta Pulnova, Elke De Zitter, Helen M. Ginn, Briony A. Yorke   +4 more
wiley   +1 more source

Miniature Nonmechanical Beam Deflector Based on Bragg Reflector Waveguide With a Number of Resolution Points Larger Than 1000

IEEE Photonics Journal, 2012
A compact and super-high-resolution beam steering device is demonstrated using a Bragg reflector waveguide. For 37-nm tuning in input wavelengths, we obtained a continuous beam steering angle of 60°.
X. Gu, T. Shimada, A. Matsutani, F. Koyama   +3 more
doaj   +1 more source

Reconfigurable phased microstrip antenna array with defected ground structure and defected microstrip structure for beam steering application [PDF]

, 2018
Beam steering is defined as the ability to electronically steer the beam maximum of an antenna electric field pattern to some predefined point in space. The performance of a phased antenna array for beam steering without moving the antennas is important ...
Subhi Ahmad, Khalid
core  

Two Dimensional Array Imaging with Beam Steered Data

, 2013
This paper discusses different approaches used for millimeter wave imaging of two-dimensional objects. Imaging of a two dimensional object requires reflected wave data to be collected across two distinct dimensions.
Patole, Sujeet, Torlak, Murat
core   +1 more source

Reduced-Order Modelling of the Bending of an Array of Torsional Micromirrors [PDF]

, 2006
Reduced-Order Modelling of the Bending of an Array of An array of micromirrors for beam steering optical switching has been designed in a thick polysilicon technology.
Molfese, A., Nannini, A., Pieri, F.
core   +3 more sources