Results 21 to 30 of about 29,953,595 (347)
Compact Bent-Corner Orthogonal Beam Switching Antenna Module for 5G Mobile Devices [PDF]
Journal of Electromagnetic Engineering and Science, 2022 Typically, users engage with smartphones in either single-hand or dual-hand mode. To design antennas that operate at 28 GHz and have high pattern integrity for both modes of operation, an orthogonal beam switching module is required as a single phased ...
G. S. Karthikeya +3 more
doaj +1 more source
Sensors, 2021 In this paper, a high efficiency broadband planar array antenna is developed at X-band for synthetic aperture radar (SAR) on small satellites. The antenna is based on a multi-layer element structure consisting of two dielectric substrates made of Taconic
Kyei Anim +3 more
doaj +1 more source
A high-gain cell enhancer [PDF]
, 1992 A cell enhancer that offers a combination of high-grain and high output power with extremely good linearity is described. The prototype repeater offers an active gain of at least 100 dB over a bandwidth of several megahertz.
McGeehan, JP, Slingsby, WT
core +2 more sources
Spectral narrowing in high-gain lasers [PDF]
, 1972 The dependence of spectral narrowing in lasers on the line-broadening mechanism is investigated including the effects of saturation and distributed loss. It is found that in the unsaturated regime the narrowing is essentially independent of the resonance
Casperson, Lee W., Yariv, Amnon
core +1 more source
High-Gain High-Field Fusion Plasma [PDF]
Scientific Reports, 2015 AbstractA Faraday wheel (FW)—an electric generator of constant electrical polarity that produces huge currents—could be implemented in an existing tokamak to study high-gain high-field (HGHF) fusion plasma, such as the Experimental Advanced Superconducting Tokamak (EAST).
openaire +2 more sources
Micromachines, 2021 This paper presents dual-band high-gain subwavelength cavity antennas with artificial magnetic conductor (AMC) metamaterial microstructures. We developed an AMC metamaterial plate that can be equivalent to mu-negative metamaterials (MNMs) at two ...
Guang Lu +7 more
doaj +1 more source
High‐gain polarization conversion metasurface
ETRI Journal, 2019 A novel analytical method based on the cavity mode theory to design a metasurface (MS) is proposed in this study. We carefully analyzed the phase and amplitude characteristics of the incident wave and transmitted wave, and successfully designed a ...
Aixin Chen +3 more
doaj +1 more source
Longitudinal modes in a high-gain laser [PDF]
, 1970 In lasers employing high-gain narrow-linewidth transitions the theory predicts major departures of the mode-splitting frequencies from their low-gain values as well as a new type of mode splitting.
Amnon Yariv +3 more
core +2 more sources
IEEE Transactions on Antennas and Propagation, 2020 This article describes a dual-polarized and high-gain shared-aperture antenna operating in ${X}$ - and Ka-bands. The proposed shared-aperture antenna is implemented by combining a folded transmitarray (TA) antenna operating in Ka-band and a Fabry–Perot (
Peng Mei, Shuai Zhang, G. Pedersen
semanticscholar +1 more source
High-Gain Backward Lasing in Air [PDF]
Science, 2011 Focused ultraviolet light creates a distant “lasing spark” in air that can then be used for remote detection.
Dogariu, Arthur +3 more
openaire +3 more sources