Results 11 to 20 of about 650,085 (100)
Brazilian Journal of Physics, 2006 High-spin states in the neutron-deficient140Gd nucleus have been studied with the 92Mo(54Fe,a2p) reaction at a beam energy of 240 MeV. The level scheme of 140Gd was considerably extended from what was previously known. In this work we concentrate on one of the 9 bands observed, which presents relatively strong M1 transitions and negligible signature ...
Oliveira, J.R.B. +25 more
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Rectenna design for K band application [PDF]
2014 44th European Microwave Conference, 2014 An ultra-compact (2.5 cm 2) rectenna design based on an innovative topology using a coplanar stripline connected to a crossed dipoles antenna array is reported here. Experimental results in the K-band show that a DC power up to 0.9 mW can be harvested on a 0.3 kΩ load by using the proposed compact rectenna for incident power density of 1413 µW/cm 2 ...
Takacs, Alexandru +5 more
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Wideband compact antennafor K-band applications [PDF]
Electronics Letters, 2000 A compact coupled microwave active antenna is presented. This antenna is proximity fed, and consists of a square radiating element array on a polymer dielectric layer. The compactness of the antenna is obtained through technological optical processes and the parasitic patch phenomenon which increases the bandwidth.
Grzeskowiak, Marjorie +2 more
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IEEE Antennas and Wireless Propagation Letters, 2022 <p>This letter presents a concept for a surface exhibiting tunable reflectivity that operates within the K-band using varactor diodes. Thereby, the impedance of a two-layer metasurface is controlled through lumped components at its back side and not from the front, where discrete elements would scatter the incident wave.
Christoph Kohlberger +2 more
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The Hawaii K-band galaxy survey. 1: Deep K-band imaging
The Astrophysical Journal, 1994 We present the results of a very deep K-band survey with a 5 sigma total galaxy magnitude limit of K = 21.9 in the deepest field. A 5 sigma K-band-selected sample of 123 galaxies is presented, together with their optical colors. Only three galaxies in this sample are not detected at the 1 sigma level in Kron-Cousins I band.
L. L. Cowie +5 more
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Electronics Letters, 1977 Single-stage f.e.t. amplifiers operating in K-band have been constructed using the Varian VSX 9305 0.5 µm-gate GaAs f.e.t. An amplifier gain of 9±1 dB was obtained over the frequency band 18.5-20.5 GHz and gain of 8±1 dB was observed from 23.0 to 26.0 GHz. An amplifier noise figure of 5.6 dB was measured at 24 GHz.
M.M. Nowak, P.A. Terzian, R.D. Fairman
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K-Band Microlensing of the Inner Galaxy [PDF]
The Astrophysical Journal, 1995 10 pages, texfile requires phyzzx, no figures, send to gould@payne.mps.ohio-state.edu for postscript ...
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Triangular Sierpinski Microwave Band-Stop Resonators for K-Band Filtering. [PDF]
Sensors (Basel), 2023 Marcelli R +6 more
europepmc +1 more source
An Improved Performance Radar Sensor for K-Band Automotive Radars. [PDF]
Sensors (Basel), 2023 Abd El-Hameed AS +4 more
europepmc +1 more source
MEMS-Switched Triangular and U-Shaped Band-Stop Resonators for K-Band Operation. [PDF]
Sensors (Basel), 2023 Marcelli R +6 more
europepmc +1 more source