Results 21 to 30 of about 26,377 (290)
An Optimal Design for Universal Multiport Interferometers [PDF]
, 2016 Universal multiport interferometers, which can be programmed to implement any linear transformation between multiple channels, are emerging as a powerful tool for both classical and quantum photonics.
Clements, William R. +4 more
core +2 more sources
A Frequency Independent Phase Shifter
Acoustics, 2023 A frequency-independent phase shift is determined such that two phase shifted versions of a signal can be summed whereby the resulting amplitude spectrum is unchanged. A phase difference between two signals is thus defined which remains constant for all frequencies within a given range.
Máté Csanád +2 more
openaire +2 more sources
Low-Loss Mechanically Tunable Resonator and Phase Shifters in Groove Gap Waveguide Technology
IEEE Access, 2022 This research is focused on the design and realization of high-performance high-power variable phase shifters in groove gap waveguide technology. Specifically, it is shown that the unique characteristic of groove gap waveguides, which is its proper ...
Ali Karami Horestani +2 more
doaj +1 more source
A general approach for robust integrated polarization rotators [PDF]
, 2013 Integrated polarization rotators suffer from very high sensitivity to fabrication errors. A polarization rotator scheme that substantially increases fabrication tolerances is proposed.
Alonso-Ramos, C. +9 more
core +1 more source
Energy-Efficient Hybrid Beamforming with Variable and Constant Phase Shifters
Applied Sciences, 2019 In this paper, the authors propose a novel partially connected hybrid beamforming (PC-HBF) architecture, which employs variable phase shifters (VPSs) and constant phase shifters (CPSs) for analog beamforming to harness the potential of these two types of
Godwin Mruma Gadiel, Kyungchun Lee
doaj +1 more source
A Singly Curved Conformal Phased Array with Integrated Particles-Based CRLH Phase Shifters
Electronics, 2023 In this paper, a four unit cell micron-sized magnetic particles embedded composite right/left-handed (CRLH) transmission line metamaterial phase shifter is proposed.
Muhammad Ayaz, Irfan Ullah
doaj +1 more source
Spectral and Energy Efficiency of Massive MIMO for Hybrid Architectures Based on Phase Shifters
IEEE Access, 2018 This paper investigates the downlink achievable spectral efficiency (SE) and energy efficiency (EE) of massive MIMO for hybrid architectures based on phase shifters, where the base station (BS) has perfect channel state information and baseband ...
Weiqiang Tan +5 more
doaj +1 more source
Fast ferroelectric phase shifters for energy recovery linacs
Physical Review Special Topics. Accelerators and Beams, 2010 Fast phase shifters are described that use a novel barium strontium titanate ceramic that can rapidly change its dielectric constant as an external bias voltage is changed.
S. Yu Kazakov +5 more
doaj +1 more source
Scalable and ultralow power silicon photonic two-dimensional phased array
APL Photonics, 2023 Photonic integrated circuit based optical phased arrays (PIC-OPAs) are emerging as promising programmable processors and spatial light modulators, combining the best of planar and free-space optics.
Michelle Chalupnik +4 more
doaj +1 more source
Photonics, 2016 We present a comprehensive study on how to design and fabricate low loss electro-optic phase shifters based on an electro-optic polymer and the silicon nitride and silicon oxynitride waveguide material systems.
Lars Baudzus, Peter M. Krummrich
doaj +1 more source