Results 1 to 10 of about 12,388 (315)

Nonreciprocal Reconfigurable Microwave Optomechanical Circuit [PDF]

open access: gold2018 International Conference on Optical MEMS and Nanophotonics (OMN), 2017
AbstractNonreciprocal microwave devices are ubiquitous in radar and radio communication and indispensable in the readout chains of superconducting quantum circuits. Since they commonly rely on ferrite materials requiring large magnetic fields that make them bulky and lossy, there has been significant interest in magnetic-field-free on-chip alternatives,
N. R. Bernier   +7 more
openaire   +7 more sources

A MIMO Radar System based on Fractal Antenna Arrays for Level Measurement Applications [PDF]

open access: yesAdvances in Radio Science, 2021
In this contribution, the design of a multiple-input multiple-output (MIMO) radar system in 77–81 GHz range with 18 transmitting antennas and 24 receiving antennas for measuring the height profile of bulk solids in silos, is presented and discussed.
C. Dahl, M. Vogt, I. Rolfes
doaj   +1 more source

Characterization and Modeling of Quantum Dot Behavior in FDSOI Devices

open access: yesIEEE Journal of the Electron Devices Society, 2022
A compact analytical model is proposed along with a parameter extraction methodology to accurately capture the steady-state (DC) sequential tunneling current observed in the subthreshold region of the transfer $I_{DS}-V_{GS}$ characteristics of MOSFETs
S. Pati Tripathi   +11 more
doaj   +1 more source

High-Tc Superconducting Microwave and Millimeter Devices and Circuits—An Overview

open access: yesIEEE Journal of Microwaves, 2022
High temperature (high-Tc) superconductors (HTS) have found many applications in the last two decades. To microwave researchers and engineers, the ultra-low surface resistance of the thin-film HTS materials at microwave and millimeter frequencies and the
Ting Zhang, Jia Du, Y. Jay Guo
doaj   +1 more source

Non-Contact Detection of Vital Signs Based on Improved Adaptive EEMD Algorithm (July 2022)

open access: yesSensors, 2022
Non-contact vital sign detection technology has brought a more comfortable experience to the detection process of human respiratory and heartbeat signals.
Didi Xu   +3 more
doaj   +1 more source

Wideband Direction-of-Arrival Estimation With Arbitrary Array via Coherent Annihilating

open access: yesIEEE Access, 2019
In this paper, a new wideband DOA estimation method for arbitrary array application is proposed. The arbitrary array manifold is approximately decomposed under the concept of manifold separation technique (MST) and a linear combination of the equal ...
Yujian Pan   +4 more
doaj   +1 more source

Direction-of-Arrival Estimation With ULA: A Spatial Annihilating Filter Reconstruction Perspective

open access: yesIEEE Access, 2018
Direction-of-arrival (DOA) estimation under low signal-to-noise ratio (SNR) and snapshot deficient scenarios has practical application value. Since the array output of the uniform linear array (ULA) can be viewed as a linear combination of the equal ...
Yujian Pan   +3 more
doaj   +1 more source

3D Band-Absorptive Frequency Selective Rasorber: Concept and Analysis

open access: yesIEEE Access, 2019
This paper presents a 3D band-absorptive frequency selective rasorber (FSR). Such an FSR is absorptive within a specific band and almost transparent below the absorption band. The definition and evaluation of the band-absorptive FSR is initially provided
Yufeng Yu   +6 more
doaj   +1 more source

Characterizing Scattering Parameters of Superconducting Quantum Integrated Circuits at Milli-Kelvin Temperatures

open access: yesIEEE Access, 2022
Designing large-scale superconducting quantum circuits involves complex microwave engineering to minimize loss, spurious reflections, and signal crosstalk.
Manoj Stanley   +4 more
doaj   +1 more source

Dual-Polarized Omnidirectional Antenna With High Isolation Based on the Theory of Characteristic Modes

open access: yesIEEE Access, 2018
A dual-polarized antenna with omnidirectional radiation and high isolation performance is proposed in this paper. The proposed antenna consists of courtyard-shaped metal frame, feeding network, and metal background.
Xi Wang Dai   +5 more
doaj   +1 more source

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