Results 11 to 20 of about 105,564 (350)

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

Realization of microwave quantum circuits using hybrid superconducting-semiconducting nanowire Josephson elements [PDF]

open access: yes, 2015
We report the realization of quantum microwave circuits using hybrid superconductor-semiconductor Josephson elements comprised of InAs nanowires contacted by NbTiN.
Akhmerov, A. R.   +8 more
core   +4 more sources

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

Cyclostationary-Based Vital Signs Detection Using Microwave Radar at 2.5 GHz

open access: yesSensors, 2020
Non-contact detection and estimation of vital signs such as respiratory and cardiac frequencies is a powerful tool for surveillance applications. In particular, the continuous wave bio-radar has been widely investigated to determine the physiological ...
Fatima Sekak   +5 more
doaj   +1 more source

Time-domain analysis of RF and microwave autonomous circuits by vector fitting-based approach [PDF]

open access: yes, 2019
This work presents a new method for the analysis of RF and microwave autonomous circuits directly in the time-domain, which is the most effective approach at simulation level to evaluate nonlinear phenomena. For RF and microwave autonomous circuits, time-
Antonini, Giulio   +5 more
core   +1 more source

3D Absorptive Frequency-Selective Reflection and Transmission Structures With Dual Absorption Bands

open access: yesIEEE Access, 2018
This paper presents a 3D absorptive frequency-selective reflection structure (AFSR) and absorptive frequency-selective transmission structure (AFST) with one reflection/transmission band and two absorption bands.
Yufeng Yu   +6 more
doaj   +1 more source

Simulation and Automated Modeling of Microwave Circuits: State-of-the-Art and Emerging Trends

open access: yesIEEE Journal of Microwaves, 2021
Microwave modeling and simulation are essential to designing microwave circuits and systems. Although fundamental concepts and approaches for modeling and simulation are mature, the drive to higher frequencies, tighter design margins, and more ...
Qi-Jun Zhang   +4 more
doaj   +1 more source

Lithographic technology for microwave integrated circuits [PDF]

open access: yes, 1997
Conductive lithographic films (CLFs) have been developed primarily as substitutes for resin/laminate boards, which share properties with the metallisation patterns used in planar microwave integrated circuits (MICs).
Evans, PSA   +3 more
core   +1 more source

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