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Homepage Archive - June 2017 (page 2)

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.

Homepage Archive Pages

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
2014:  Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec
2013:  Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec

See Page 1 | 2 | 3 | 4 of the June 2017 homepage archives.

Monday 19

Mallory Carbon Controls Advertisement

Mallory Carbon Controls Advertisement, March 1948 Radio-Craft - RF CafeHere is another one of those advertisements that you would probably never see in today's electronics magazines, but its theme was fairly prevalent up through about the 1970s. There is fundamentally nothing offensive about it; men have always endeavored to gain the favor of women. However, society has since been bullied by name-calling, finger-pointing, full-of-themselves celebrities and media into being afraid to acknowledge innate, harmless propensities of everyday people. The natural has been ...

Free e-Book: Electrical and Electronics Engineers - Occupational Outlook

Electrical and Electronics Engineers: Occupational Outlook - RF CafeThis e-book probably applies to most RF Cafe visitors. "Electrical and Electronics Engineers - Occupational Outlook" is available as a free download. "Considering a career as an electrical and electronics engineer? These professionals design, develop, test and supervise the manufacturing of electrical equipment, including motors, communication systems and power generation equipment. This guide provides all the necessary information and resources to get started. Find out everything you ..."

Storing Data: A Moving Target

Martin Rowe, Storing Data: A Moving Target - RF CafeLong-time EDN columnist Martin Rowe just published a short piece about the issue of storing archival data. His example included family photos and movies as well as data files from vintage software. Mr. Rowe points out that most programs only open files from a couple generations back, so unless you are diligent about re-saving files in newer versions as they are released, you could find yourself having to keep or re-acquire (try eBay) older versions if you want to access your information. Go back into the 1990s and you'll need an OS that can run 16-bit software ...

everything RF Intros BuildBot Website Builder for Engineering Companies

everything RF Introduces BuildBot - A Website Builder for Engineering Companies - RF CafeAt IMS 2017, everything RF has introduced the most powerful website builder tool for product driven engineering companies. You no longer need to go to a developer or agency and spend large amounts of money to get your website developed. BuildBot.io starts at only $100 / month and enables you to build a powerful website where you can add your complete product catalog, press releases / news stories, events, distributors, application notes and white papers and much more. Lead generation is also built in to the platform, allowing you ...

The Paris Radio Exhibition

The Paris Radio Exhibition, February 1935 Short Wave Craft - RF Cafe'All-wave' radios were all the rage in the 1930s. Such technological marvels (they truly were back in the day) gave listeners access to not just local commercial broadcasts, but to radio stations around the world. Farm families and suburb dwellers suddenly became nouveau cosmopolitans. It was akin to how the Internet, aka the 'Information Superhighway,' provided on-demand access to stored data in the 1990s. 'Onramps' like RF Cafe provided organized, classified venues for the teeming masses. But, I digress... Not only were new radios being designed as all-wave, but tuning ...

3-in-1 Device Offers Alternative to Moore's Law

3-in-1 Device Offers Alternative to Moore's Law - RF Cafe"In the semiconductor industry, there is currently one main strategy for improving the speed and efficiency of devices: scale down the device dimensions in order to fit more transistors onto a computer chip, in accordance with Moore's law. However, the number of transistors on a computer chip cannot exponentially increase forever, and this is motivating researchers to look for other ways to improve semiconductor technologies. In a new study published in Nanotechnology, a team of researchers at SUNY-Polytechnic ..."

Sunday 18

Science & Electronics Crossword Puzzle for June 18

Science & Electronics Crossword Puzzle for June 18, 2017 - RF CafeThis week's tech-themed crossword puzzle, as is the case every week, contains only words pertaining to engineering, amateur radio, science, physics, mechanics, mathematics, etc. If you want to exploit your knowledge of movie star names, obscure towns in obscure countries, movies, literature, television shows, or clothing designers, then you will need to find yourself an edition of the NY Times or the Boston Herald ...

Friday 16

The Great Electron-Pedantic Project

The Great Electron-Pedantic Project, February 1970 Popular Electronics - RF CafeThere's not a much better way to wrap up a work week than to read through a short technohumor (I just made up that word) novel by Carl Kohler or John T. Frye. Reading a few technocomics (another made-up word) by various illustrators is a great resource, too. This story, which appeared in a 1970 issue of Popular Electronics, is another episode in the life of technotinkerer (a "Maker" in today's lingo) Kohler (who also drew a lot of the technocomics) and his skeptical helpmeet (for good reason) 'Friend-Wife,' as he unveils his repurposed homebuilt UNIversity computer ...

Huawei Completes Second-Phase 5G Radio Technology Tests in China

Huawei Completes Second-Phase 5G Radio Technology Tests in China - RF Cafe"Huawei has successfully completed testing the second-phase of 5G radio technology in China. During the C-Band test in the Huairou District of Beijing, Huawei adopted 5G New Radio (5G NR), Massive MIMO and other technologies using the entire available 200 MHz bandwidth to achieve over 6 Gbps of single-user downlink throughput and over 18 Gbps of cell peak rate. The world's first Huawei 5G test terminal, utilized for radio technology verification, enabled more than 100 channels of on demand 4K UHD video from a single 5G base ..."

Is This the 1st Step to Ephemeral Transistors?

Is This the 1st Step to Ephemeral Transistors? - RF CafeQueen's University Belfast researchers have discovered a way to create and move extremely thin electrically conducting sheets inside a solid, possibly leading to movable ephemeral transistors. The material concerned is the 'improper' ferroelectric Cu-Cl boracite Cu3B7O13Cl. Within this material, even a single crystal of this material, multiple electrostatic domains - regions in which electric charges are aligned - can be created. The boundaries between these domains - the domain walls, which are 2D sheets a few ...

Wireless System Designer Is Now Available!

Wireless System Designer v1 Is Available Now! - RF CafeFor more than a decade, RF Cascade Workbook 2005™ has been the de facto standard for spreadsheet-based RF system cascade analysis. Wireless System Designer™ is the next phase in the evolution. If you know how to use Excel and you know anything about cascaded system calculations, then you know how to use Wireless System Designer™. This is significantly easier and faster than using the multi-thousand dollar simulators when a quick system analysis is all that is needed. An intro video takes you through the main features ...

Germanium Displacing GaAs for RF Transistors

Germanium Displacing GaAs for RF Transistors - RF Cafe"Germanium is beginning to replace gallium arsenide (GaAs) for fast radio frequency transistors that are less expensive and also compatible with silicon and CMOS. At the 2017 Symposia on VLSI Technology and Circuits in Japan earlier this month, European research institute Imec presented a pair of papers showing gate-all-around (GAA) transistors that outperform standard CMOS below the 10-nm node plus have source/drain contacts with billionth-of-an-ohm resistance. The super fast sub-10-nm SiGe GAA transistors used strained Ge ..."

Thursday 15

First Person DX'ing

First Person DX'ing, February 1970 Popular Electronics - RF Cafe'DXing' is amateur radio shorthand for long distance communications. While there is no formal exact distance beyond which an operator has officially made a 'long distance' contact, a generally accepted range is maybe 50 miles or so. To some extent, DX is relative to the equipment and power being used. For instance if you have a maximum legal transmitter output power of 1500 watts and an optimally sited, mounted and tuned, high gain antenna, with low loss transmission cable, and super sensitive receiver, etc., and make a successful contact 100 miles away, no one would ...

Army Battlefield Network Under Review: What’s Next for WIN-T?

Army Battlefield Network Under Review: What’s Next for WIN-T? - RF Cafe"The Army is 'taking a hard look' at its flagship tactical communications network after receiving more negative reviews from the field, said Chief of Staff Gen. Mark Milley. He listed several issues plaguing the Warfighter Information Network-Tactical, known as WIN-T: it is too complex to operate in combat conditions, it is not as transportable as it needs to be, and it is not completely secure from cyber intrusions. This is clearly bad news for the Army, as deployed soldiers depend on WIN-T for voice and data communications around the world ..."

Withwave Intros Vertical Launch 2.4 mm Connector (50 GHz)

WithWave Intros Vertical Launch 2.4 mm Connector (50 GHz) - RF CafeWithwave's Vertical Launch Connectors are specially designed for solderless vertical PCB launch on test & measurement board. These connectors have excellent electrical transition performance up to 50 GHz as well as reduce installation time by eliminating soldering. DC to 50 GHz, 2.4 mm type (female, male), excellent vertical transition (VSWR <1.3), easy & solderless installation on designed substrate ...

Engineering White Papers & Books, June 2017

Engineering White Papers & Books, June 2017 - RF CafeThe free whitepapers, pamphlets, books, magazines, and chapter examples listed here are a small sample of a lot of new items that are offered for FREE through TradePub. The publishers make them available to qualifying people as a promotional campaign for their full line of offerings. Note: I earn a few pennies (literally) when you download one of these or the many other pubs available, so please help yourself ...

Thanks to Antenna Test Lab Co for Continued Support!

Antenna Test Lab Co logoSince 2001, Antenna Test Lab Co has evaluated countless antennas and RF transmitter products. With a fully anechoic Antenna Test Lab Co Anechoic Chamber - RF Cafechamber, antennas can be quickly developed and RF products refined and deployed. Mounting surfaces like drywall, glass, wood, and even curved metal Antenna Test Lab Co 2D & 2D Patterns - RF Cafesimulated automobile available. The price for a standard resolution 2D or 3D field pattern plot is only $450 - for a passive or radiating antenna. That is an incredible deal!

Two New Satellites Successfully Join Galileo SatNav Constellation

Two New Satellites Successfully Join Galileo SatNav Constellation - RF Cafe"Europe's Galileo SatNav system has received a boost with the addition of two new satellites to its existing network. The total number of satellites in the Galileo Network is now 16 (including these two). These two satellites are part of the the four Galileos that were launched by Ariane 5 on 17 November. The new satellites will now accordingly broadcast timings and navigate signals worldwide while also picking up distress calls across the planet. The growing number of Galileo users around the world will draw immediate benefit from the ..."

Wednesday 14

Cleveland Institute of Electronics Advertisement

Cleveland Institute of Electronics Advertisement, January 1969 Electronics World - RF CafeAs mentioned often here on RF Cafe, especially with an ever-increasing amount of devices and appliances with "no user serviceable parts inside," the demand for electronics technicians is as great today as it was decades ago. Associated equipment is significantly different now and a lot more of it consists of swap-out modules and assemblies rather than performing repairs in the field. However, there still exists a significant amount of legacy electronics everywhere, and it all needs to be maintained until upgrades are installed. There ...

3 DIY CubeSats Score Rides on NASA's First Flight of Orion

3 DIY CubeSats Score Rides on NASA's First Flight of Orion - RF Cafe"NASA's Space Technology Mission Directorate (STMD) has awarded rides for three small spacecraft on the agency's newest rocket, and $20,000 each in prize money, to the winning teams of citizen solvers competing in the semi-final round of the agency's Cube Quest Challenge. The three winning teams secured space to launch their CubeSats on Exploration Mission-1, the first integrated flight of NASA's Space Launch System (SLS) and Orion spacecraft. Once deployed, the CubeSats will vie for a share of a $5 million prize in the first-ever competition in deep ..."

Anatech Electronics Intros 2 Bandpass and VHF Tunable Filters

Anatech Electronics Intros 2 Bandpass and a VHF Tunable Filters - RF CafeAnatech Electronics offers the industry's largest portfolio of high-performance standard and customized RF and microwave filters and filter-related products for military, commercial, aerospace and defense, and industrial applications up to 40 GHz. Anatech has introduced 3 new products for your convenience: a 6000 MHz stripline bandpass filter with SMA connectors, a 105-115 MHz user-tunable VHF filter with TNC connectors, and a WiFi cavity bandpass filter SMA connectors ...

A Radio Shack Eulogy

A Radio Shack Eulogy - RF CafeFriends, former employees, and fellow lovers of all things electronic, we are gathered here today to remember and honor our lifelong friend and enabler of our hobby and passion, Radio Shack - once a Tandy company, as we are familiar with it. Radio Shack has lingered in failing health for a decade, all the time keeping a brave face on its dwindling number of stores. Caretakers attempted a variety of infusions and transplants in an attempt to save the American stalwart electronics retailer. Alas, a confluence of poor management ...

Whitepapers Engineering Magazines

Engineering White Papers & Books, June 2017 - RF CafeWhitepapers, pamphlets, books, magazines, and chapter examples listed here are a small sample of a lot of new items that are offered for FREE through TradePub. The publishers make them available to qualifying people as a promotional campaign for their full line of offerings. Whitepaper topics include careers, manufacturing, and engineering, while magazine titles include Microwaves & RF, Military & Aerospace Electronics, and Microwave Product Digest ...

Improving Isolation of GaN Transistors on SOI

Improving Isolation of GaN Transistors on SOI - RF Cafe"Researchers based in Belgium and Finland have used silicon-on-insulator (SOI) substrates to improve the electrical isolation of p-type gallium nitride (p-GaN) high-electron-mobility transistors (HEMTs). The team, from imec and KU Leuven in Belgium and Okmetic Oy in Finland, sees electrical isolation as being vital for monolithic power circuits such as half-bridge layouts with transistors biased at significantly different levels. Such isolation is difficult when devices are placed on a common conductive substrate ..."

Tuesday 13

Free e-Book: STEM 101 - Intro to Tomorrow's Jobs 

STEM 101: Intro to Tomorrow's Jobs - RF CafeIf you have of know a young'un who is trying to decide on a career path, you might want to download this STEM 101 - Intro to Tomorrow's Jobs e-book - for free via your Facebook or LinkedIn account. "Science, technology, engineering and math (STEM) jobs are the way of the future. These fields employ the world’s top innovators to solve the problems of today for a better tomorrow. If you want to pursue a career in STEM, look no further. This Career Outlook will show you the wages, employment opportunities ..."

Radio and Television News, January 1969 Electronics World

Radio and Television News, January 1969 Electronics World - RF CafeWhat were some of the top issues of the radio and television industry 50 years ago? In a lot of respects, the same things that concern it today. A ready supply of service technicians was a concern that was taken seriously by the Electronics Industry Association (EIA). While there are not many local repair shops for electronics products nowadays, there is still a huge demand to techs who are willing and able to do the hard work of keeping the world's communication infrastructure operational - climbing towers, repairing cell equipment (BTS units, network computer racks, landlines, etc.). Now, as then, good pay ...

Triad RF Systems Intros 30-3000 MHz, 3 W Bi-Directional Amplifier

Triad RF Systems Intros 30-3000 MHz, 3 W Bi-Directional Amplifier - RF CafeThe TTRM1010 is a Bi-Directional SSPA for small to medium size UAS applications. In addition to its broad frequency range it also contains internal DC conversion circuitry that allows it to be powered by an input voltage range of 9-36 VDC. This class A GaAs module is designed for both military and commercial applications. It is capable of supporting any signal type and modulation format, including but not limited to 3-4G telecom, WLAN, OFDM, DVB, and CW/AM/FM. The latest device technologies and design methods are employed ...

Many Thanks to ConductRF for Continued Support!

ConductRF coaxial cables & connectors - RF CafeConductRF is continually innovating and developing new and improved solutions for RF Interconnect needs. See the latest TESTeCON RF Test Cables for labs. ConductRF makes production and test coax cable assemblies as well as standard & precision RF connectors. Over 1,000 solutions for low PIM in-building to choose from in the iBwave component library. They also provide custom coax solutions for applications where some standard just won't do. Please visit ConductRF today to see how they can help your project!

Quasiparticles Could Lead to Faster Circuits, Higher Bandwidths

Quasiparticles Could Lead to Faster Circuits, Higher Bandwidths - RF Cafe"Zhe Fei pointed to the bright and dark vertical lines running across his computer screen. This nano-image, he explained, shows the waves associated with a half-light, half-matter quasiparticle moving inside a semiconductor. 'These are waves just like water waves,' said Fei, an Iowa State University assistant professor of physics and astronomy and an associate of the U.S. Department of Energy's Ames Laboratory. 'It's like dropping a rock on the surface of water and seeing waves ..."

Monday 12

3rd Electromagnetic Spectrum Operations Summit

3rd Electromagnetic Spectrum Operations Summit - RF CafeThe 2017 Electromagnetic Spectrum Summit, June 20-21, in Alexandria, Virginia, will focus on emerging concepts, technologies and challenges that exist within the ever-growing domain of electromagnetic spectrum operations. As EW warfighting continues to evolve in complexity, it is clear that EW systems must work collaboratively across multi-domains. Management and manipulation of the EMS by the DoD allows our nation to gain ...

Link Coupling Nomogram

Link Coupling Nomogram, January 1969 Electronics World - RF CafeThis nomogram (aka nomograph) provides a 'simple' method for determining the coupling coefficient (ke) of air core transformers for RF circuits where the operational wavelength is much longer than the physical length of the transformer. Modern circuit simulators can calculate such quantities at the blink of an eye, but in 1969 there was no simple method for doing it. In fact, a lot of design work back in the day was done using nomograms because given all the impreciseness of circuit layout and component tolerances, there were enough tunable elements provided ...

EDI CON USA 2017 Announces European Radar Summit

EDI CON USA 2017 Announces European Radar Summit - RF CafeThe Electronic Design Innovation Conference and Exhibition (EDI CON) USA, the first industry event to bring together RF/microwave and high-speed digital design engineers and system integrators, announced today the addition of the European Radar Summit to its conference program at the Hynes Convention Center, September 11-13 in Boston, Mass. EDI CON USA 2017 is building on its inaugural 2016 conference with multiple parallel tracks covering RF/microwave, high-speed digital and EMC/EMI topics. The conference features extended tutorials and short courses on ...

Cheaper, Easier Resistance Standard Ohm on a Chip

Cheaper, Easier Resistance Standard Ohm on a Chip - RF Cafe"Researchers at the U.S. National Institute of Standards and Technology (NIST) and Carnegie Mellon Univ. in Pittsburgh, Pa., have deposited a graphene film on silicon carbide to produce a quantized ohm-on-a-chip. The advance, several years in the making, promises a practical device for measuring electrical-resistance that is easier and less expensive to make, and less demanding to operate, than the current generation of standards fabricated from GaAs and AlGaAs. Both the graphene and the GaAs/AlGaAs standards depend on ..."

New Diode Features Optically Controlled Capacitance

New Diode Features Optically Controlled Capacitance - RF CafeA team of researchers at the Israel Institute of Technology has developed a new capacitor with a metal-insulator-semiconductor (MIS) diode structure that is tunable by illumination. The capacitor, which features embedded metal nanoparticles, is similar to a metal-insulator-metal (MIM) diode, except that the capacitance of the new device depends on illumination and exhibits a strong frequency dispersion, allowing for a high degree of tunability. This new capacitor has the potential to enhance wireless capability ...

Sunday 11

Wireless Technology Crossword Puzzle for June 11

Wireless Technology Crossword Puzzle for June 11, 2017 - RF CafeThis week's crossword puzzle has a wireless technology theme with words which are terms you will find in news stories and text books. Avid cruciverbalists amongst us appreciate that each week I create a new crossword puzzle that has a theme related to engineering, mathematics, chemistry, physics, and other technical words. You will never be asked the name of a movie star unless he/she was involved in a technical endeavor. Enjoy ...

   

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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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