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"All in all, there seems to be no limit in sight to future electronic expansion." - Hugo Gernsback
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Today in Science History

New Addition to RF Stencils for Visio: Panel Components

New Addition to RF Stencils for Visio: Panel Components - RF CafeBy popular request, a new set of shapes has been added to RF Stencils for Visio: Panel Components. These are built to the same scale as the test equipment and equipment racks in v3.0 so they will fit right in with your existing drawings. There are now more than 780 shapes in v3.1! Still only $35 (free to v3.0 owners) ...

Could Holey Silicon Be the Holy Grail of Electronics?

Could Holey Silicon Be the Holy Grail of Electronics? - RF Cafe"Electronics miniaturization has put high-powered computing capability into the hands of ordinary people, but the ongoing downsizing of integrated circuits is challenging engineers to come up with new ways to thwart component overheating. Scientists at U. Cal., Irvine made a breakthrough recently in verifying a new material configuration to facilitate cooling. In a study in the journal Nanotechnology, members of UCI's Nano Thermal Energy Research Group highlight the attributes of holey silicon, a computer chip ..."

IMS2018 to Hold Student Design Competition

IMS2018 to Hold Student Design Competition - RF Cafe"The 2018 International Microwave Symposium (IMS), this year, will be held in Philadelphia from the 10 to 15 of June. This year one of the projects in the Student Design Competition is a 16-quadrature amplitude modulation (QAM) radio. The competition will be based on a course offered by Dr. David S. Ricketts from North Carolina State University. The competition leverages Dr. Ricketts' hands-on workshop, known as 'From Bits to Waves: Building a Modern Radio in One Day,' which successfully combines the use of NI AWR Design Environment with design labs to ..."

Designing with Plastics for Military Equipment

Designing With Plastics for Military Equipment - RF CafeThe April issue of Aerospace Defense magazine has an interesting article titled, "Designing with Plastics for Military Equipment," that discusses how plastics are replacing metal parts in military equipment. Included is a useful table of plastic types, their properties, and examples of their applications ...

Transient Specialists' AVI3000 Avionics EMC Immunity Test System

Transient Specialists' AVI3000 Avionics EMC Immunity Test System - RF CafeTransient Specialists, a leader in electromagnetic compatibility rentals for over 40 years, announces that they will be offering a discount price on the AVI 3000 for the month of May. This all-in-one 6 waveform portable test unit allows easy on-site testing to full level 3 threat under all load conditions. This product is ideal for testing to DO 160 Sec. 22 Level 3 and Mil Std. 461 CS 117 Waveforms 1, 2, 3, 4, 5A, and 6. Transient Specialists, conveniently located in the mid-west, offers a variety of EMC test equipment rentals to accommodate your testing needs ...

Gunn Oscillators: A Reintroduction

Gunn Oscillators: A Reintroduction - RF CafeYonghui Shu, president of SAGE Millimeter, offers a primer on Gunn diodes used as mm-wave oscillators. It appears on the HFE website. "The semiconductor used in the Gunn oscillator is called the 'Gunn diode.' The Gunn diode is a two-terminal 'negative' resistance device. The Gunn diode is also referred to as a 'Transferred Electron Device' which was invented by J. B. Gunn in 1963. Since their invention, Gunn oscillators have been playing a unique role in replacing the tube to generate low to medium level ...

Radio Over Fiber Paves Way for Future 5G Networks

Radio Over Fiber Paves Way for Future 5G Networks - RF Cafe"A manufacturer of III-V photonic devices claims to have proven the feasibility of 60-GHz radio over fiber (ROF) transmission at a 1,270-nm wavelength, paving the way to potential solutions for 5G networks. CST Global, a Scotland-based subsidiary of Sivers IMA Holdings AB in Kista, Sweden, carried out the feasibility study as part of an EU Horizon 2020 research project. The company says that ROF networks are emerging as a completely new and promising communication paradigm for delivering broadband wireless access services and ..."

The Future of Automotive Radar Testing

The Future of Automotive Radar Testing - RF CafeMr. Matt Spexarth, of National Instruments, offers his insight into the future of automotive radar testing in his Microwave Journal article. "Radar has multiple advantages over alternative sensing technologies, securing its role in automotive active safety and autonomous driving well into the future. Radar has the unique abilities to instantaneously detect the velocity of detected objects via the Doppler shift of their radar signatures, and to penetrate inclement weather conditions such as rain, fog and snow. These benefits are driving automakers ..."

Mac's Service Shop: Electronics and Psychology

Mac's Service Shop: Electronics and Psychology, May 1969 Electronics World - RF CafeJohn Frye, creator of fictitious electronics repair shop owner Mac McGregor and his sidekick technician, Barney, must have been an amateur student of brainology[sic]. This episode in a 1969 issue of Electronics World, and a recent story titled, "Biological Effects of Electrical Shock," which appeared in the May 1973 edition of Popular Electronics are proof of that. A very good introduction to the workings of nerve cells, axons, synapses, dendrites, etc., is given here. In a role reversal, Barney is educating Mac this time based on a psychology course he is taking at the community college. He goes beyond the "your brain is a ...

QuinStar Next-Gen GaN Solid-State Power Amplifiers for Space

QuinStar Next-Gen Gallium Nitride Solid-State Power Amplifiers for Space - RF CafeSatellite communication is growing rapidly. Recent and anticipated launches of new satellite equipment are spurring interest in and demand for wireless communication. Several companies have stated the intent to provide large throughput, high-speed communication networks in the coming years. Along with the increased access to space, this is driving interest in new satellite communications. Accordingly, we need new communications technology to supply bandwidth and data rate to support these applications. One challenge ...

Two-Wire Three-Way Switching Circuit

Two-Wire Three-Way Switching Circuit, July 1966 Popular Electronics - RF CafeI have to laugh a bit when seeing this article on how to wire up a set of 3-way switches "[i]f you only have a two-wire cable to work with." There have been many times when I needed to wire a set of 3-way switches and only had 2-wire Romex cable on-hand. The simple solution is to simply run two pieces of 2-wire cable and only use one wire from the second piece. A 250' roll of 14-3 w/ground costs about $79 at the hardware store. A 250' roll of 14-2 w/ground costs about $45. For short runs, the additional cost of using two pieces of 14-2 compared to a single piece of 14-3 is diddly. However, if you want ...

NI AWR Software Featured in Balun Design Webinar

NI AWR Software Featured in Balun Design Webinar  - RF CafeApril 26, 2018, 11 am ET. NI AWR Design Environment will be featured in a webinar on designing a printed balun for a wide bandwidth L-band 200 W power amplifier (PA). The design begins with an idealized circuit simulation in Microwave Office circuit design software using closed-form transmission line models, followed by a more rigorous EM simulation conducted using AXIEM 3D planar EM solver. The webinar is presented by Dr. Dominic FitzPatrick of PoweRFul Microwave, who ...

The Antenna Specialists Co. Advertisement

The Antenna Specialists Co. Ad, July 1966 Popular Electronics - RF CafeHere's a gimmick that never really caught on. In the 1960's, Antenna Specialists promoted their Model M−148 Co-Ax Omni Antenna "with visual RF indicator." That indicator was a neon light bulb at the tip which lit up when the transmitter was keyed on. Not only would this novel feature let you know when your transmitter was broadcasting, but it would also "guide mobiles visually to your 10-20." OK, maybe at night, but it certainly wouldn't have been bright enough during the day to even see. Alas, the public evidently didn't impress the buying public as much as it did the designers. Maybe it had something to do with ...

Electronics-Themed Comics, July 1969 Electronics World

Electronics-Themed Comics, July 1969 Electronics World - RF CafeHere are a couple more electronics-themed comics from a 1969 edition of Electronics World magazine. I like the radio astronomy comic. Enjoy ...

Many Thanks to ERZIA for Continued Support!

Many Thanks to ERZIA for Continued Support!RF Cafe's continued existence depends on companies like ERZIA providing support. ERZIA produces microwave and mm-wave modular amplifiers and integrated assemblies operating from Low frequencies up to 100 GHz. Their catalogue of standard amplifier modules comprises more than 100 different models, having also a high capacity of customization for amplifiers and integrated assemblies. Some of products have space heritage and are used in aerospace, commercial, military and scientific systems, having a wide range of final applications ...

Generating Multiple Phase Coherent Signals

Generating Multiple Phase Coherent Signals - RF CafeTesting multi-antenna systems such as phased array or beamforming antennas requires a test system capable of providing multiple signals with constant phase relationships between them. The coherent test signals must have a specific or definable phase difference (relative phase) and definable amplitude. Some of the challenges for such a test system include compactness, phase control capability and simplicity in handling. In particular, phase stability between the channels is of importance. This application note ...

Tech Industry Headlines

Tech Industry Headlines - RF Cafe- Archive -

Smartphone Addiction Similar to Substance Abuse

20 Entangled Qubits Bring Quantum Computer Closer

Indian Telcos to See 40% Drop in Revenue

UK Government Biggest Hurdle to Infrastructure Rollout

Sweden's Gun Violence Problem...

FCC Launches Honors Engineering Program

Google May Team with Nokia re Acquiring In-Flight Tech Unit

ARRL Requests Expanded HF Privileges for Technician Licensees

Ofcom Puts the Breaks on Dark Fibre Access Plans

Telcos Create Global Alliance to Fight Cyber Crime

Take Part in The Engineer's 2018 Salary Survey

How to Stack TV Antennas to Increase Signal Strength and to Reduce Ghosts

How to Stack TV Antennas to Increase Signal Strength and to Reduce Ghosts, November 1965 Popular Electronics - RF CafeYou probably won't find too many people stacking television antennas these days, but many Hams still do it. Vertical stacking is used primarily to increase overall gain without appreciably altering the azimuth beam, while horizontal stacking forms a tighter azimuth beam without appreciably affecting the overall gain. When it comes to optimizing antenna designs installations for operations below about a gigahertz, Amateur Radio practitioners have pretty much written the book on the subject - actually, they have written hundreds of books on the subject. Antenna stacking is often used ...

Thanks to Anatech Electronics for Long-Time Support

Anatech Electronics logo - RF CafeAnatech Electronics (AEI) manufactures and supplies RF and microwave filters for military and commercial communication systems, providing standard and custom RF filters, and RF products. Standard RF filter and cable assembly products are Anatech Electronics RF Filterspublished in our website database for ease of procurement. Custom RF filters designs are used when a standard cannot be found, or the requirements dictate a custom approach. Please visit Anatech today to see how they can help your project succeed!

Burgess Salutes United on 20th Anniversary of Transcontinental Airmail

Burgess Salutes United on 20th Anniversary of Transcontinental Airmail, January 1941 QST - RF CafeThis thankful commemoration of the 20th anniversary of U.S. Air Mail service from Burgess Battery Company, which appeared in a 1941 issue of QST magazine, encompasses most of my major lifetime interests. First and foremost, from my earliest memories, is a love of airplanes (and all things that fly for that matter). A DC−3 (my favorite multi-engine propeller plane) is shown in one of the photos as is a Ford Trimotor, which Melanie and I have flown on. Next comes the electrical, electronics, and radio communications aspects, which encompasses the aircraft wiring ...

RF Cafe Engineering & Science Crossword Puzzle April 15

RF Cafe Engineering & Science Crossword Puzzle April 15, 2018Each week, for the sake of all avid cruciverbalists amongst us, I create a new technology-themed crossword puzzle using only words from my custom-created lexicon related to engineering, science, mathematics, chemistry, physics, astronomy, etc. You will never find among the words names of politicians, mountain ranges, exotic foods or plants, movie stars, or anything of the sort. You might, however, see someone or something in the exclusion list who or that is directly related to this puzzle's theme, such as Hedy Lamar or the Bikini Atoll, respectively ...

Please Welcome Rohde & Schwarz USA as a Supporter !

Rohde & Schwarz RF Component Pocket Guide - RF CafeRohde & Schwarz (R&S) is promoting the availability of their free RF Component Pocket Guide. I posted an article about it and some of their posters and pocket guides. R&S develops, produces and markets test & measurement, information and communications technology. It focuses on test and measurement, broadcast and media, cybersecurity, secure communications and monitoring and network testing, areas that address many different industry and government-sector market segments. Specifically: test and measurement for the wireless market, automotive industry ...

Solid State - Early Mention of GaAs

Solid State - Early Mention of GaAs, April 1966 Popular Electronics - RF CafeWhen is the last time you heard someone refer to electronics as "solid state?" It was a necessary differentiator during the era of transition from vacuum tubes to semiconductors. Mere utterance caused fear in some, and futuristic hope in others. "Solid State" was a big buzz phrase in marketing to household consumers and industry planners. Why, I ask, was "solid state" chosen as the term to counter vacuum tube electronics? Did we ever refer to tubes as "gaseous state" or "plasma state" devices? Maybe the "solid" part of "solid state" evoked a sympathetic emotion with the coincident hippie / beatnik era population's usage ...

Author: Kirt Blattenberger on Google+ Author:
Kirt Blattenberger