Development of compact broadband receivers at submillimeter wavelengths

2004 ◽  
Author(s):  
J.L. Heslert ◽  
D.W. Porterfield ◽  
W.L. Bishopt ◽  
T.W. Crowet ◽  
P. Racette
Keyword(s):  
Submillimeter Wavelengths ◽  
Broadband Receivers

scholarly journals Excitation mechanism in the intracluster filaments surrounding the Brightest Cluster Galaxies

2019 ◽  
Vol 15 (S359) ◽  
pp. 185-187
Author(s):  
Fiorella L. Polles
Keyword(s):  
Active Galactic Nuclei ◽  
Galactic Nuclei ◽  
Elliptical Galaxies ◽  
Cluster Galaxies ◽  
Cooling Flow ◽  
Submillimeter Wavelengths ◽  
Hot Plasma ◽  
Brightest Cluster Galaxies ◽  
Multi Phase ◽  
The Impact

AbstractMulti-phase filamentary structures surrounding giant elliptical galaxies at the center of cool-core clusters, the Brightest Cluster Galaxies (BCGs), have been detected from optical to submillimeter wavelengths. The source of the ionisation in the filaments is still debated. Studying the excitation of these structures is key to our understanding of Active Galactic Nuclei (AGN) feedback in general, and more precisely of the impact of environmental and local effects on star formation. One possible contributor to the excitation of the filaments is the thermal radiation from the cooling of the hot plasma surrounding the BCGs, the so-called cooling flow.

scholarly journals Profiled Horn Antenna with Wideband Capability Targeting Sub-THz Applications

Electronics ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 412
Author(s):  
Jay Gupta ◽  
Dhaval Pujara ◽  
Jorge Teniente
Keyword(s):  
Hermite Polynomial ◽  
Polynomial Interpolation ◽  
Horn Antenna ◽  
Submillimeter Wavelengths ◽  
Thz Applications ◽  
Millimeter And Submillimeter Wavelengths ◽  
Better Than

This paper proposes a wideband profiled horn antenna designed using the piecewise biarc Hermite polynomial interpolation and validated experimentally at 55 GHz. The proposed design proves S11 and directivity better than −22 dB and 25.5 dB across the entire band and only needs 3 node points if compared with the well-known spline profiled horn antenna. Our design makes use of an increasing radius and hence does not present non-accessible regions from the aperture, allowing its fabrication with electro erosion techniques especially suitable for millimeter and submillimeter wavelengths.

A wideband superheterodyne radiometer for submillimeter wavelengths

1977 ◽  
Vol 20 (11) ◽  
pp. 1153-1155 ◽  
Author(s):  
Yu. V. Lebskii ◽  
V. P. Mezentsev ◽  
L. I. Fedoseev ◽  
A. A. Shvetsov
Keyword(s):  
Submillimeter Wavelengths ◽  
Superheterodyne Radiometer

SDR for Metrology and Communications at Submillimeter Wavelengths

2021 ◽  
Author(s):  
Dustin Widmann ◽  
Christopher Moore ◽  
Michael B. Eller ◽  
Vinay Iyer ◽  
Noah Sauber ◽  
...  
Keyword(s):  
Submillimeter Wavelengths
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