Antennas and EM Waves
A blog devoted to some interests of mine: antennas, radiowave propagation, ham radio, and any sort of eclectic wireless technology
Friday, 23 October 2015
Ingegneri delle RF e Microonde soddisfatti... negli USA !
Leggo i risultati del "2015 Engineering Salary Survey" effettuato negli USA e scopro che "In general, the RF/microwave industry appears to look positive, with 88.3% of respondents saying they are satisfied in their current position. Engineers also reported an average base salary of $100,657, with 66.7% saying they felt adequately compensated for their work.... Engineers remain well compensated for their innovative and challenging work—and with a generally high level of job satisfaction, the profession should remain strong for the foreseeable future."
Non posso fare a meno di fare un confronto con la situazione deprimente del nostro Paese, dove i ruoli tecnici sono sistematicamente mortificati a beneficio di quelli gestionali, con "manager" che gestiscono tecnologie che credono di capire...
Per approfondire cliccare qui.
Friday, 26 July 2013
3..2...1...we have lift off !
The Alphasat satellite was launched yesterday, and it is now in orbit. For those of you who missed the moment, here is the video of the launch (click here).
The activities with the experimental payloads will start in few months.
Wednesday, 24 July 2013
Countdown is progressing...
Follow the launch of Alphasat in real time, tomorrow evening:
Alphasat is ready to go..click here to follow the launch..
Tuesday, 16 July 2013
Signals from space
On 25 July 2013 (keep fingers crossed) ESA will launch the new ‘Alphasat' satellite, the largest European telecom satellite ever built. One of the payloads is dedicated to radio propagation experiments at Ka (20 GHz) and Q (40 GHz) band; this research activity will be coordinated by our research group at Politecnico di Milano. Space, the last frontier...
(Courtesy of ESA)
Read more on: http://www.esa.int/Our_Activities/Telecommunications_Integrated_Applications/Alphasat
Friday, 12 July 2013
Plasma antennas
Well, I must admit I didn't know anything about plasma
antennas since I read about them recently in the "Microwaves&Rf"
magazine (www.mwrf.com).
From the magazine: "The plasma in these antennas is
essentially a blend of electrons, ions, and neutrons. When the density of the
plasma is high enough, an electromagnetic (EM) wave will travel on its surface
rather than deep into it. The plasma will exhibit the properties of a
conductor, serving as an antenna for transmitting and receiving signals. Consequently,
a plasma column can be used as a radiative element in place of a metallic
conductor. The plasma becomes conductive when energized by an RF source, and
nonconductive once the source is removed." (i.e. the antenna just
"disappears" like magic).
You can find the full story at: http://mwrf.com/passive-components/analyze-rcs-plasma-antenna
Everything started...
This is my first post to this "brand new" blog devoted to Antennas and Radiowave
propagation... those are weird topics,
uh ? Ok, I feel that some history is
needed to put things into perspective.
Everything
started (as it often happens) when I was a teenager (late 70s); at that time I was absolutely
fascinated by the magic of long-range radio communications; there were no
satellite TV and no Internet, and the only way to get out of your small world
was to use a shortwave radio. I was so fascinated that I eventually got a
radioamateur license (with the callsign IK7GDP first, that became IZ2EAS later), license that I still hold.
My interest
in radio communications led me to pursue a professional career in the field; I
enrolled at Politecnico di Milano as a freshman in 1983 and (like in Eagles' "Hotel
California") I never managed to get out of that place. In fact, I have been
working there since I graduated, teaching and doing research on.. (you guess...)
antennas, radiowave propagation and electromagnetic fields.
It has been a long
road, from there to here... stay tuned !
Subscribe to:
Posts (Atom)