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

Forbes Features Pro-FM Chip Article

Forbes Features Pro-FM Chip Article - RF Cafe"In a piece called 'Smartphone FM Radio Capabilities Enhance Public Safety at No Cost,' Forbes contributor Steve Pociask points out how vital radio is during times of emergency. 'The value of FM radio has been demonstrated again and again.' Pociask cites several examples, storm after storm, where residents affected by disaster turned to radio. One of those examples was Hurricane Isaac in 2012. 'Most of New Orleans was without power for three to five days. Across the city, cell phone service didn't work, power outages prevented access to TV ..."

Empower Intros New Multi-Mode 200 W, 1900-6000 MHz SSPA

Empower RF Systems Intros New Multi-Mode 200W, 1900 - 6000 MHz SSPA - RF CafeEmpower RF is announcing the production release of our proven Model 2215 for EMC, RF Product Test, Communications, and Electronic Warfare applications. The 2215's inherent rugged design is based off Empower's COTS family of NEXT GEN patented architecture that virtually eliminates every internal connector found in the typical RF/Microwave system amplifier. With Power supply options that include 28 V DC, 400 Hz AC, and single phase AC, the unit is equally suited for land mobile vehicle, airborne, and shipboard deployments ...

IEEE COMSOC White Paper: Fundamentals of RF Design

IEEE COMSOC White Paper: Fundamentals of RF Design - RF CafeIEEE COMSOC and Rohde & Schwarz have jointly published this white paper titled, "Fundamentals of RF Design." This paper, downloadable at no cost, provides practical knowledge for designing an RF system. It covers design fundamentals such as transmission medium, wave propagation, free space path loss, and key components. It also includes an overview of test equipment and ideas to consider through the design, development and verification process ...

Spin-3/2 Superconductor a First

Spin-3/2 Superconductor a First - RF Cafe"The first known superconductor in which spin-3/2 quasiparticles form Cooper pairs has been created by physicists in the US and New Zealand. The unconventional superconductor is an alloy of yttrium, platinum and bismuth, which is normally a topological semimetal. The research was done by Johnpierre Paglione and colleagues at the University of Maryland, Iowa State‚Äôs Ames Laboratory, the Lawrence Berkeley National Laboratory and the Universities of Otago and Wisconsin. Conventional superconductivity arises in a material when spin-1/2 electrons form 'Cooper pairs ..."

Webinar: RF/Microwave Power and Noise Measurement

Webinar: RF/Microwave Power and Noise Measurement - RF CafeBoonton / Noisecom and Microwave Journal will present the RF/Microwave Power and Noise Measurement webinar on April 25, 2018 at 11am ET. "This webinar will provide an overview of power and noise measurement at RF and microwave frequencies. The webinar begins with a review of basic power measurement theory before describing a range of equipment types and detectors commonly used to measure RF and microwave power, highlighting the limitations of each type. Noise will then be reviewed, including basic noise concepts such as noise figure ...

RF Cafe Engineering & Science Crossword Puzzle April 22

RF Cafe Engineering & Science Crossword Puzzle April 22, 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 ...

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 ..."

Nuhertz Technologies to Host

Nuhertz Technologies to Host - RF CafeNuhertz Technologies will be hosting a Filter Design Workshop at IMS 2018, Philadelphia, June 12, 2018, beginning at 10 am. It is titled "Exceptionally Fast, Easy, and Flexible Optimization of the Electromagnetic (EM) Planar Filter Frequency Response Using Nuhertz FilterSolutions." Guest speakers include John Dunn of AWR Group, NI, Brian Rautio of Sonnet Software, and Larry Dunleavy of Modelithics. The focus will be use of the FilterSolutions' NI AWR Design Environment interface and supporting Microwave Office circuit design software tool rapidly ...

Wholesale and Pricing Strategy in Mobile Markets

Wholesale and Pricing Strategy in Mobile Markets - RF Cafe"In this commissioned report by The MVNOs Series, we cover a number of topics, such as the changes in the mobile wholesale market, Wholesale-as-a-Service and the impact on digitalization, network innovation and the impact of virtualization, what to expect from a future with 5G and the new opportunities it brings. The mobile market is well-established as one of the most strategically important sectors of the global economy. The wider mobile ecosystem is estimated to deliver $3.6T in value added ..."

Parlor Game, Popular Electronics

Parlor Game, Popular Electronics - RF CafeWhen I ran across this article in a 1966 issue of Popular Electronics, it reminded me of a fairly recent situation that happened to me at home. People in the 1960's were at the beginning of the consumer electronics revolution, and anytime you could work some newfangled high tech gadget into an activity it was a good thing. A lot of the Carl by Jerry stories by John T. Frye, published in the same era, illustrate the point. My tale has to do with hearing an unidentifiable woman's voice coming from "somewhere" that seemed to be inside the house. There are some times when a combination of ...

Pentagon's Newfound Cash to Focus on Tech for Tomorrow's Conflicts

Pentagon's Newfound Cash to Focus on Tech for Tomorrow's Conflicts - RF Cafe"By now pretty much everyone has heard that the U.S. DoD is flush with cash. It's probably more money than the military has had in decades. Yet once we get beyond the initial euphoria, several big questions come up: - How is the Pentagon going to spend all that money? - How can military leaders transform money into meaningful readiness? - What might be the disruptive new technologies that the DOD's sudden new wealth should help promote most aggressively? - Can we trust the ..."

TV Trouble Quiz

TV Trouble Quiz, July 1966 Popular Electronics - RF CafeVery few people these days would have any clue as to the causes of the CRT-type TV picture problems shown here - I certainly don't, even after looking at the answers (except for #4, which is pretty obvious given the choices offered). What I can claim is to have likely seen each one of those types of issues with all the cheap TV sets I've owned (especially #9). My current 26" LCD television (I only own one TV), which is ten years old this year, is still working fine and never displays any of those funny patterns. In the days of the Macs TV Service Shop stories, survival in the business ...

Nokia and KDDI Demonstrate 4G Can Be Used for Connected Car

Nokia and KDDI Demonstrate 4G Can Be Used for Connected Car - RF Cafe"Autonomous vehicles and the connected car have been one of the front-runners for 5G investments, but in demonstrating 4G can be used as low-latency connectivity for vehicles, has Nokia undermined its 5G mission? This is part of the issue for the telcos when it comes to investments for 5G; the messaging is very messy. It will be an expensive mission to upgrade the world to the fifth generation of mobile networks, therefore sound business cases for ROI are needed, with autonomous vehicles and the connected car near the top of the list. But if this use case can be delivered over 4G, does this ..."

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 ...

Tech Industry Headlines

Tech Industry Headlines - RF Cafe- Archive -

Police Attempt to Unlock Deceased Man's Phone with His Finger at Funeral Home

The Electronics Industry: A Pawn in the U.S. vs. China Chess Game

Graphene Sets Record for Squeezing Light to 1 Atom

European Automakers to Add Alibaba Voice Assistant to Cars

Sweden's SAQ LF Transmitter on the Air on May 1

Qualcomm Begins Layoffs

DesignCon 2018 Best Paper Awards Honor >50 Engineers

DISA Put on DoD Budget Chopping Block

Virginia Radio Amateur Completes Contacts on All 29 Ham Bands

Richest 1% on Track to Control 2/3 of World's Wealth by 2030

iPhone Sales May Be Drastically Below Predictions

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 ...

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 ...

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 ...

Author: Kirt Blattenberger on Google+ Author:
Kirt Blattenberger