Results 61 to 70 of about 36,496 (304)
Design Aspects of a Broadband Beam-Reconfigurable Leaky-Wave Antenna [PDF]
, 2016 Design aspects of a novel beam-reconfigurable pla-nar series-fed array are addressed to achieve beam steering with frequency tunability over a relatively broad bandwidth.
Abdo-Sánchez, Elena +5 more
core +1 more source
Silicon Photonic MEMS Phase-Shifter
Optics Express, 2019 We present a design for an analog phase shifter based on Silicon Photonic MEMS technology. The operation principle is based on a two-step parallel plate electrostatic actuation mechanism to bring a vertically movable suspended tapered waveguide in a first step into proximity of the bus waveguide and to tune the phase of the propagating coupled mode in ...
Hamed Sattari +6 more
openaire +2 more sources
FEBS Letters, EarlyView.This perspective highlights emerging insights into how the circadian transcription factor CLOCK:BMAL1 regulates chromatin architecture, cooperates with other transcription factors, and coordinates enhancer dynamics. We propose an updated framework for how circadian transcription factors operate within dynamic and multifactorial chromatin landscapes ...
Xinyu Y. Nie, Jerome S. Menet
wiley +1 more source
Variable High Precision Wide D-Band Phase Shifter
IEEE Access, 2020 This paper proposes a new concept of designing compact high precision millimeter-wave wideband variable phase shifters. The phase shifter is implemented with a stacked shim with extremely short length of 0.9 mm and two waveguide flange adaptors with ...
Zhongxia Simon He +3 more
doaj +1 more source
Further compactifying linear optical unitaries
APL Photonics, 2021 Quantum integrated photonics requires large-scale linear optical circuitry, and for many applications, it is desirable to have a universally programmable circuit, able to implement an arbitrary unitary transformation on a number of modes.
B. A. Bell, I. A. Walmsley
doaj +1 more source
Micromachines, 2023 This paper addresses the design of a hybrid beamforming system considering the circuit parameter of six-bit millimeter-wave phase shifters based on the process design kit.
Mohammed A. Alqaisei +3 more
doaj +1 more source
An x-band RFIC active phase shifter [PDF]
, 2012 — An active RFIC X-band phase shifter is implemented using IHP SiGe HBT 0.25 μm SGB25V technology with an improved vector sum method. The chip is formed by a three way Wilkinson power divider, three phase delays for 0-120-240 degrees, three similar RFIC
Dogan, Mustafa +3 more
core
A millimetre wave phase shifter using a 40GHz hybrid mode locked laser [PDF]
, 2008 In this paper, electrical injection locking of a modelocked laser is used to create a millimetre wave phase shifter. The phase shift is measured directly using a vector network analyzer enabling straightforward characterization of such systems.
Cryan, MJ, Khawaja, BAM
core +2 more sources
Time after time – circadian clocks through the lens of oscillator theory
FEBS Letters, EarlyView.Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo +2 more
wiley +1 more source
Automatic quadrature control and measuring system [PDF]
, 1973 Quadrature is separated from amplified signal by use of phase detector, with phase shifter providing appropriate reference. Output of phase detector is further amplified and filtered by dc amplifier.
Hamlet, J. F.
core +2 more sources