Results 71 to 80 of about 157,315 (201)

Millimeter-wave spectra of the Jovian planets [PDF]

open access: yes
The millimeter wave portion of the electromagnetic spectrum is critical for understanding the subcloud atmospheric structure of the Jovian planets (Jupiter, Saturn, Uranus, and Neptune).
Joiner, Joanna, Steffes, Paul G.
core   +1 more source

Millimeter-wave antennas

open access: yesMillimeter-wave antennas
identifier:oai:t2r2.star.titech.ac.jp ...
Alan J. Fenn   +4 more
openaire   +2 more sources

Polarization-Independent and Angle-Insensitive Metamaterial Absorber Using 90-Degree-Rotated Split-Ring Resonators

open access: yesInternational Journal of Antennas and Propagation, 2015
We present the design, simulation, and measurement of a polarization-independent and angle-insensitive metamaterial absorber (MA) in X-band. Since the unit cell of the MA consists of four subwavelength split-ring resonators with 4-fold symmetric rotation,
Jia-Qi Feng   +9 more
doaj   +1 more source

Compact Microstrip NWB/DWB BPFs With Controllable Isolation Bandwidth for Interference Rejection

open access: yesIEEE Access, 2019
In this paper, a novel and planar topology, which can be used to design notched-/dual-wideband bandpass filters (NWB/DWB BPFs) with controllable isolation bandwidth, is presented for interference rejection.
Xiao-Kun Bi   +3 more
doaj   +1 more source

A Symmetrical Dual-Beam Bowtie Antenna With Gain Enhancement Using Metamaterial for 5G MIMO Applications

open access: yesIEEE Photonics Journal, 2019
A symmetrical dual-beam end-fire bowtie antenna with gain enhancement is achieved by integrating three pairs of metamaterial (MTM) arrays for 5G MIMO applications.
Haixin Jiang   +3 more
doaj   +1 more source

Millimeter Wave Interferometry [PDF]

open access: yesHighlights of Astronomy, 1989
Millimeter interferometers give high-resolution (few arc sec) information on cool (100-1000 K) matter, which cannot be easily studied by other techniques. The objects include regions of high extinction (Ay ~ 10–200 mag), planetary atmospheres, outflows from forming stars, mass loss from stellar envelopes and molecular clouds in galaxies. The advantages
openaire   +1 more source

Millimeter-wave radiometry for radio astronomy Final report [PDF]

open access: yes
Lunation study using millimeter wave radiometry for radio ...
Cooper, C. A.   +2 more
core   +1 more source

Reconfigurable intelligent surface enabled programmable antenna chamber: Concept and preliminary experiments

open access: yesElectronics Letters
Antenna chambers are RF‐shielded enclosures which are required for antenna and radio performance measurements. Typically, anechoic chambers (ACs) are used for measuring directional metrics (e.g.
Yifa Li   +5 more
doaj   +1 more source

High data rate systems for the future [PDF]

open access: yes
Information systems in the next century will transfer data at rates that are much greater than those in use today. Satellite based communication systems will play an important role in networking users.
Chitwood, John
core   +1 more source

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