Results 11 to 20 of about 7,972 (265)

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

IEEE 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, Guo Qing Luo, Ya Hui Qian, Xiao Hong Zhang, Hua Yan Jin, Zhang Cheng Hao   +5 more
doaj   +1 more source

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

Sensors, 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, Kawtar Zerhouni, Fouzia Elbahhar, Madjid Haddad, Christophe Loyez, Kamel Haddadi   +5 more
doaj   +1 more source

Nonreciprocal Reconfigurable Microwave Optomechanical Circuit [PDF]

2018 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, L. D. Tóth, A. Koottandavida, M. A. Ioannou, D. Malz, A. Nunnenkamp, A. K. Feofanov, T. J. Kippenberg   +7 more
openaire   +7 more sources

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

IEEE 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, Guo Qing Luo, Ahmed Abdelmottaleb Omar, Xuan Liu, Weiliang Yu, Zhang Cheng Hao, Zhongxiang Shen   +6 more
doaj   +1 more source

Generating single microwave photons in a circuit [PDF]

Nature, 2007
6 pages, 5 figures, hires version at http://www.eng.yale.edu/rslab/papers/single_photon_hires ...
A.A.Houck, D.I.Schuster, J.M.Gambetta, J.A.Schreier, B.Johnson, J.M.Chow, J.Majer, L.Frunzio, M.H.Devoret, S.M.Girvin, R.J.Schoelkopf   +10 more
openaire   +4 more sources

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

IEEE 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, Emad Gad, Behzad Nouri, Weicong Na, Michel Nakhla   +4 more
doaj   +1 more source

Integration Design of Millimeter-Wave Filtering Patch Antenna Array With SIW Four-Way Anti-Phase Filtering Power Divider

IEEE Access, 2019
In this paper, the integration design of a millimeter-wave filtering patch antenna array fed by a substrate integrated waveguide (SIW) four-way anti-phase filtering power divider is proposed.
Huayan Jin, Guo Qing Luo, Wenlei Wang, Wenquan Che, Kuo-Sheng Chin   +4 more
doaj   +1 more source

Substrateless Packaging for a D-Band MMIC Based on a Waveguide with a Glide-Symmetric EBG Hole Configuration

Sensors, 2022
This paper presents a novel substrateless packaging solution for the D-band active e mixer MMIC module, using a waveguide line with a glide-symmetric periodic electromagnetic bandgap (EBG) hole configuration.
Weihua Yu, Abbas Vosoogh, Bowu Wang, Zhongxia Simon He   +3 more
doaj   +1 more source

Compact Dual-Broadband Dual-Polarized Antenna With Additional Ground Platform

IEEE Access, 2019
A compact dual-polarized antenna element covering the frequency bands of 0.773~1.0405 GHz and 1.69~2.83 GHz is proposed in this paper. The nested scheme is adopted and the performances of the lower- and upper-band element are analyzed, respectively.
Xi Wang Dai, Zhen Ye Wang, Xiao Chun Gao, Guo Qing Luo, Zhang Cheng Hao   +4 more
doaj   +1 more source

Multi-layer transmission line of spoof surface plasmon polaritons

EPJ Applied Metamaterials, 2022
In modern microwave technology, multi-layer structure is widely adopted in compact circuit design. In a multi-layer microwave system, the transmission line (TL) plays an important role.
Lu Yuxi, Tang Wenxuan, Cui Tie Jun
doaj   +1 more source