Results 11 to 20 of about 973,387 (301)

A CMOS K-Band 6-bit Attenuator With Low Phase Imbalance for Phased Array Applications

open access: yesIEEE Access, 2017
A 6-bit digital-controlled attenuator with low phase imbalance for a K-band phased array system is presented in this paper. To decrease the insertion phase difference, the proposed design adopts a phase correction capacitor in the shunt branch of the ...
Lin Zhang   +4 more
doaj   +2 more sources

Design of crashworthy attenuator structures as a part of vehicle safety against impact: Application of waste aluminum can-based material

open access: yesTheoretical and Applied Mechanics Letters, 2021
The impact attenuator is an essential system in both race cars and urban vehicles. The structure of an impact attenuator serves as a safety barrier between the impacted surface and the driver in an accident. Attenuator materials tend to have a high price;
Laksmana Widi Prasetya   +4 more
doaj   +1 more source

Multi-Stress Monitoring System with Fiber-Optic Mandrels and Fiber Bragg Grating Sensors in a Sagnac Loop

open access: yesSensors, 2015
Fiber Bragg grating sensors are placed in a fiber-optic Sagnac loop to combine the grating temperature sensors and the fiber-optic mandrel acoustic emission sensors in single optical circuit.
Hyunjin Kim, Umesh Sampath, Minho Song
doaj   +1 more source

The MMIC design of GaAs bi-phase voltage variable attenuator

open access: yesDianzi Jishu Yingyong, 2019
A 13~16 GHz bi-phase voltage variable attenuator(VVA) based on 0.25 μm gallium arsenide pseudomorphic high electron mobility transistors(GaAs pHEMT) process is presented.
Yuan Yifei, Zhang Bo
doaj   +1 more source

Crashworthy Examination of a Newly Proposed Impact Attenuator Design: Experimental Testing and Numerical Analysis

open access: yesModelling and Simulation in Engineering, 2021
The impact attenuator is a safety vehicle system designed to absorb the kinetic energy from a collision that is converted into deformation and ensures the deceleration level acting on the human body remains low.
Laksmana Widi Prasetya   +6 more
doaj   +1 more source

Influence of Deterministic Attenuation and Amplification of Optical Signals on Entanglement and Distillation of Gaussian and Non-Gaussian Quantum States

open access: yesEPJ Web of Conferences, 2015
We study general rules of entanglement dynamics for two-mode continuous variable states subjected to deterministic phase-insensitive attenuation and amplification.
Filippov S.N.
doaj   +1 more source

Superior Resilience of Non-Gaussian Entanglement against Local Gaussian Noises

open access: yesEntropy, 2022
Entanglement distribution task encounters a problem of how the initial entangled state should be prepared in order to remain entangled the longest possible time when subjected to local noises. In the realm of continuous-variable states and local Gaussian
Sergey Filippov, Alena Termanova
doaj   +1 more source

An X-band Bi-Directional Transmit/Receive Module for a Phased Array System in 65-nm CMOS

open access: yesSensors, 2018
We present an X-band bi-directional transmit/receive module (TRM) for a phased array system utilized in radar-based sensor systems. The proposed module, comprising a 6-bit phase shifter, a 6-bit digital step attenuator, and bi-directional gain amplifiers,
Van-Viet Nguyen   +4 more
doaj   +1 more source

Theoretical Study of Novel Microfiber-Typed Tunable Optical Attenuator

open access: yesNantong Daxue xuebao. Ziran kexue ban, 2020
In this study, a new type of micro-nano fiber tunable optical attenuator is studied, and the model of micronano fiber probe coupler is designed with its help.
JI Yancheng; CHEN Yupei; SUN Dan; DUAN Wei
doaj   +1 more source

A 3.6 GHz Polar Reflection-Type Vector Modulator Phase Shifter With Amplitude Control Capability

open access: yesIEEE Access, 2023
This paper presents a new passive vector modulator phase shifter (VMPS) based on a polar architecture suitable for use in advanced beamforming feeding networks.
Raul Arruela   +2 more
doaj   +1 more source

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