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Homepage Archive - June 2019 (page 3)

These archive pages are provided in order to make it easier for you to find items that you remember seeing on the RF Cafe homepage. Of course probably the easiest way to find anything on the website is to use the "Search RF Cafe" box at the top of every page. About RF Cafe.

Homepage Archive Pages

2019:  Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec
2018:  Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec
2017:  Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec
2016:  Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec
2015:  Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec


See Page 1 | 2 | 3 | 4 | 5 of the May 2019 homepage archives.
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Friday 21

Thursday 20

Wednesday 19

Tuesday 18

Monday 17

Sunday 16

Engineering & Science Crossword Puzzle for June 16

Engineering & Science Crossword Puzzle June 16, 2019 - RF CafeSince 2000, I have been creating custom engineering- and science-themed crossword puzzles for the brain-exercising benefit and pleasure of RF Cafe visitors who are fellow cruciverbalists. The jury is out on whether or not this type of mental challenge helps keep your gray matter from atrophying in old age, but it certainly helps maintain your vocabulary and cognitive skills at all ages. A database of thousands of words has been built up over the years and contains only clues and terms associated with engineering, science, physical, astronomy, mathematics, chemistry, etc. You will never find a word taxing your knowledge of a numbnut soap opera star or the name of some obscure village in the Andes mountains. You might, however, encounter the name of a movie star ...

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Anatech Electronics June 2019 Newsletter

Anatech Electronics June 2019 Newsletter - RF CafeAnatech Electronics, an RF and microwave filter company, has introduced a new line of suspended stripline and waveguide type RF filters. Sam Benzacar wrote as part of Anatech's June newsletter about his impressions of the IMS2019 trade show in Boston. As you might guess, the main topic is 5G and the plethora of technologies that stand to benefit from the incredible amount of bandwidth assigned to it over many heretofore largely unused frequency bands. That is part of the challenge, and the result will no doubt be the conquering of discouraging and difficult implementation issues. Also included are a few news headlines related to Anatech's core business of designing and manufacturing filters ...

 

 

 

 

 

 

 

 

The Moon Has a Smell

The Moon Has a Smell.

 

 

 

 

 

 

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Antennas of Flexible Nanotube Films

Antennas of Flexible Nanotube Films - RF cafe"Antennas made of carbon nanotube films are just as efficient as copper for wireless applications, according to researchers at Rice University's Brown School of Engineering. They're also tougher, more flexible and can essentially be painted onto devices. The Rice lab of chemical and biomolecular engineer Matteo Pasquali tested antennas made of 'shear-aligned' nanotube films. The researchers discovered that not only were the conductive films able to match the performance of commonly used copper films, they could also be made thinner to better handle higher frequencies. At the target frequencies of 5, 10 and 14 gigahertz, the antennas easily held their own with their metal counterparts ..."

Laser 'Tricked' into Producing, Receiving Modulated Wi-Fi Band RF Signals

Laser 'Tricked' into Producing, Receiving Modulated Wi-Fi Band RF Signals - RF Cafe"Researchers mixed two optical outputs of a laser comb and modulated the result, then emitted this energy via an integrated dipole antenna to create an RF signal in the 5-GHz band. We think of optical lasers and microwaves as functioning in distinctly different regions and with disparate modes within the broad electromagnetic spectrum. However, it doesn’t have to be that way, as proven by numerous developments in integrated electro-optics. Now, in a paper published in the Proceedings of the National Academy of Sciences with the deceptively modest title 'Radio frequency transmitter based on a laser frequency comb,' researchers from Harvard’s John A. Paulson School of Engineering and Applied Sciences (SEAS) have demonstrated a laser that can emit encoded microwaves as wireless RF si "

 

 

 

 

 

 

 

 

 

 

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About RF Cafe
Kirt Blattenberger - RF Cafe Webmaster
Copyright: 1996 - 2024
Webmaster:
    Kirt Blattenberger,
    BSEE - KB3UON

RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling 2 MB. Its primary purpose was to provide me with ready access to commonly needed formulas and reference material while performing my work as an RF system and circuit design engineer. The Internet was still largely an unknown entity at the time and not much was available in the form of WYSIWYG ...

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