- Welcome to the RF Cafe Website -
"Consulting... If you're not a part of the solution, there's money to be made in prolonging the problem." - Anon
Today in Science History

Arduino Mega 2560 Project Ultimate Starter Kit

Elegoo Arduino Mega 2560 Project Ultimate Starter Kit - RF CafeThese Arduino experimenter sets are big boy (and girl) versions of those basic electronics kits with the spring terminals and an assortment of Rs, Ls, Cs, a switch, and light bulb or two. This particular kit includes more than 200 pieces, including the Arduino processor board for $60 - an amazingly good deal (lesser kits start at around $35). A huge variety of add-on sensors and functional modules are available at dirt cheap prices. Here is a set of 37 modules such for $29. You can also get application-specific Arduino kits like this one for RFID development or for a smart robotic car. There's no time like the present to get started.

Mini-Circuits' January 2018 Product Announcement

Mini-Circuits January 2018 News & Product Highlights - RF CafeMini-Circuits announces in its January 2018 product lineup the availability of four new devices in its lineup of RF and microwave components. Included are a MMIC 2-way 90° hybrid covers 5 to 11 GHz, a broadband 75 Ω surface-mount transformer covers 10 to 1400 MHz, a wideband MMIC balun covers 5500 to 13500 MHz in 3 x 3 mm QFN package, and an ultra-wideband coaxial LNA matched from 0.5 to 15 GHz ...

Science Milestones in the History of Radio Event Under Way

Science Milestones in the History of Radio Event Under Way - RF Cafe"A year-long operating event, 'Science Milestones in the History of Radio,' is under way, sponsored by the Italian Amateur Radio Association (ARI) Fidenza Radio Club. Each month will highlight individuals who laid the foundations - theoretical and practical - for radio science. Awards are available for participating stations. Each month, a commemorative station with a distinctive call sign will be on the air featuring an individual  with a role in the history of wireless communication. During January, II4MXW is active, honoring the contributions of James Maxwell ..."

Intel's 49-Qubit Chip Shoots for Quantum Supremacy

Intel's 49-Qubit Chip Shoots for Quantum Supremacy - RF Cafe"Intel has passed a key milestone while running alongside Google and IBM in the marathon to build quantum computing systems. The tech giant has unveiled a superconducting quantum test chip with 49 qubits: enough qubits to possibly enable quantum computing that begins to exceed the practical limits of modern classical computers. Intel’s announcement about the design and fabrication of its new 49-qubit superconducting quantum chip, code-named Tangle Lake, came during a keynote speech by Brian Krzanich, Intel's CEO, during ..."

Silicon Nanowire Springs Stretch, Keep Electrical Properties

Silicon Nanowire Springs Stretch, Keep Electrical Properties - RF Cafe"In a paper titled 'Deterministic Line-Shape Programming of Silicon Nanowires for Extremely Stretchable Springs and Electronics' published in the Nano Letters, an international team of researchers from Nanjing University, Peking University, and CNRS-Ecole Polytechnique has demonstrated a new route to designing silicon-based flexible electronics in a scalable way. Rather than starting from Si wafers cut-out from drawn silicon ingots, they describe in their paper a nanoscale-version of the crystal-pulling methods used to grow ..."

Quantum Radio for Communicating in Problematic Environments

Quantum Radio May Offer New Twist on Communicating in Problematic Environments - RF Cafe"Researchers at the National Institute of Standards and Technology (NIST) have demonstrated that quantum physics might enable communication and mapping in locations where GPS, cell phones, and radio is not reliable or don't work at all, such as indoors, in urban canyons, underwater, and underground. NIST announced the technology advance on January 2. The technology may have marine, military, and surveying applications. The NIST team is experimenting with very low frequency (VLF) digitally modulated magnetic signals ..."

Crystals for CB & Ham Communication

Crystals for CB & Ham Communication, March 1973 Popular Electronics - RF CafeAccording to author R.R. Freeland, manufacturing processes for radio-quality manmade crystals saw major improvements toward the end of World War II. At the time, the process was highly manual-intensive, as can be seen in this really nicely done 1940s video titled "Crystals Go to War." Prior to the use of crystals as frequency-determining devices, inductor-capacitor (LC) tank circuits were the dominant configuration. There were actually other frequency-determining schemes like spark gaps and even vibrating mechanical reeds. As you might guess, anything less than ...

Antenova High Performing 4G/LTE Diversity Antennas for Small PCBs

Antenova's New High Performing 4G/LTE Diversity Antennas for Small PCBs at CES - RF CafeAntenova Ltd, manufacturer of antennas and RF antenna modules, is showing a brand new pair of high performing 4G/LTE antennas which are suitable for PCBs as small as 60mm, at the consumer electronics show CES. The two antennas can also be used in 3G and MIMO applications. The two antennas are similar - the difference being that Inversa is built for the USA market while Integra is for European and Asian markets. Both antennas are available in left and right versions to provide more options for placement on the PCB, and can be used ...

Skyworks FEM for Bluetooth Low Energy / 802.15.4 / Thread / ZigBee

Skyworks Front-End Module for Bluetooth Low Energy/802.15.4/Thread/ZigBee - RF CafeSkyworks Solutions has introduced the SKY66114-11, its latest 2.4 GHz fully-integrated RF front-end module (FEM) supporting Bluetooth® Low Energy / Bluetooth® Smart, 802.15.4, Thread and ZigBee® applications. This high performance device is the world's most efficient and longest range solution for Internet of Things (IoT) applications, especially within the connected home, wearables and industrial markets. The FEM is ideal for voice assistants, sensors, beacons, smart watches, thermostats, wireless cameras/headphones, medical pendants, hearing aids ...

Tips for Technicians

Tips for Technicians, May 1969 Electronics World - RF CafeDid you know that Mallory, the well-known capacitor maker, at one time was at the forefront of solid state rectifier diodes? Not me, at least before seeing this infomercial from a 1969 Electronics World magazine. I know that they made selenium rectifiers that replaced many applications which formerly required vacuum tubes. This installation of Mallory's "Tips for Technicians" is one of many run for the benefit of service shop guys who needed to keep abreast of changes in technology. Note the admonition at the end: "Don't forget to ask 'em - 'What else needs fixing?'" ...

Earthquake-Causing Meteor in Michigan Sky

Earthquake-Causing Meteor in Michigan Sky - RF Cafe"Residents of southeast Michigan were left a bit shaken Tuesday night after a big bright flash lit up the sky and the ground beneath them shook. A flying saucer? No. A shooting star? Not quite. The National Weather Service eventually solved the mystery, tweeting 'USGS confirms meteor occurred around 8:10 pm, causing a magnitude 2.0 earthquake.'" The science-challenged reporter (as are most) got the part about it not being a shooting star wrong, though. A 'shooting star' is a meteor, although it is not a star ...

Please Thank Anatech Electronics for Continued Support of RF Cafe!

Anatech ElectronicsAnatech Electronics manufactures and supplies RF and microwave filters for military and commercial communication systems, providing standard and custom RF Anatech Electronics RF Filtersfilters, and RF products. Standard RF filter and cable assembly products are published in their website database. Custom RF filters designs are used when a standard cannot be found, or the requirements dictate a custom approach. Please take a moment to visit Anatech's website to see how they might be able to assist with your current project ...

Wartime Solder

Wartime Solder, September 1942, Radio-Craft - RF CafePrior to the big push for leadless solder in the 1990s, probably 99% or more of the solder used by industry, tradesmen, and hobbyists contained lead. The 60/40 Sn-Pb (and 63/47) alloy, both with and without a rosin or acid core, was used for electrical work, electronics, plumbing, copper guttering, radiators, and many mechanical assemblies made of steel, brass, copper, tin, etc. Between World War I, "The War to [Not] End All Wars," and World War II, the electronics industry exploded in growth. All realms of society and government became utterly dependent on products assembled using solder. Both tin and lead were abundantly available ...

Saelig Intros Compact 6 GHz USB RF Vector Spectrum Analyzer

Saelig Introduces Compact 6 GHz USB RF Vector Spectrum Analyzer - RF CafeSaelig Company announces the availability of the Triarchy Technologies VSA6G2A Vector Spectrum Analyzer - an economical USB RF tool that plugs into the USB port of a PC and is controlled with the provided PC application software. It offers almost all of the functionality of a benchtop spectrum analyzer. Its frequency range of operation is from 100 Hz to 6.2 GHz, with an amplitude measurement range of -140 dBm to 24 dBm. The RBW (resolution bandwidth) range is from 0.2 Hz to 10 MHz and the noise level (DANL) is as low as -140 dBm. The VSA6G2A is very compact (4" x 1" x 1") and easy to use. The software user ...

Someone Is Already Stealing Panels from China's New Solar Road

Someone Is Already Stealing Panels from China's New Solar Road - RF Cafe"China has been leading the world in construction of solar energy plants, building dozens of new solar farms over the past few years. In addition to building standard solar farms, the country has also been experimenting with more innovative ways to draw energy from the sun. Recently, the city of Jinan built China's very first solar road, which lasted about a week until someone stole it. The road opened on December 28, and on January 2 an inspection team noticed a piece of the road was missing. The piece was small, measuring only 6 inches wide ..."

Webinar: Are You Ready for 5G? - Unlocking 6 Key Measurements

Webinar: Are You Ready for 5G? Unlocking 6 Key Measurement Challenges for 5G Radio Validation - RF Cafe
Are You Ready for 5G? Unlocking 6 Key Measurement Challenges for 5G Radio Validation. Date: January 24, 2018 Time: 1pm ET. Abstract: "The 5G New Radio era officially begins with the publication of 3GPP Release 15 in December 2017, which defines a 5G overlay onto the existing 4G networks. As 5G and emerging wireless standards continue to evolve, wireless designers need flexibility to troubleshoot leading-edge issues in a variety of spectrum bands as well as high performance for more rigorous R&D validation. Join Daren McClearnon, 5G ...

Tech Industry Headlines

Tech Industry Headlines - RF Cafe- Archive -

CES 2018: 5G News and Nuggets

U.S. Not Prepared for Electronic Warfare vs. Russia and China

Trump: The iPhone Will Be Built in Wisconsin

Analogue IC Market Is Fastest Growing

New Catalyst for Hydrogen Production a Step Toward Clean Fuel

5G: Let the Hype Commence

Google to Deploy 3 New Undersea Cables for Cloud Infrastructure

Lawmakers Urge AT&T to Cut Commercial Ties with Huawei

Semi Market to Grow 7.5% in 2018

U.S. Plans New Nuclear Weapons

A Note to Members from ARRL President Rick Roderick, K5UR

EU Outlines Supercomputer Plan

Semiconductor Blocks Heat Transfer and Preserves Conductivity

Semiconductor Blocks Heat Transfer and Preserves Conductivity - RF Cafe"Unique thermoelectric properties in cesium tin iodide could reduce heat buildup in electronic devices. A collective rattling effect in a type of crystalline semiconductor was discovered to block most heat transfer while preserving high electrical conductivity - a rare pairing that could reduce heat buildup in electronic devices and turbine engines. The traits were discovered in a class of materials known as halide perovskites, which are also considered promising candidates for next-generation solar panels ..."

RF Cafe Engineering Crossword Puzzle w/Weekly Headlines

RF Cafe Engineering Crossword Puzzle w/Weekly Headlines January 14, 2018At least 10 clues with an asterisk (*) in this technology-themed crossword puzzle are pulled from this past week's (1/8 - 1/14) "Tech Industry Headlines" column on the RF Cafe homepage (see the Headline Archives page for help). For the sake of all the avid cruciverbalists amongst us, each week I create a new technology-themed crossword puzzle using only words from my custom-created related to engineering, science, mathematics, chemistry, physics, astronomy ...

Comsat Laboratories Needed Electronic Technicians

Comsat Laboratories Needed an Electronic Technicians, March 1969 Electronics World - RF CafeFor the benefit of RF Cafe visitors, I have posted at no charge to companies many employment announcements for engineers, technicians, managers, and other technical positions. This electronics technician job was located at COMSAT Laboratories' (Communications Satellite Corporation) Washington, D.C., facilities since 1969 was prior to when the then-futuristic-looking Clarksburg, Maryland, campus was established. In the early 1990s, I worked as an RF design engineer for a few years at COMSAT Laboratories in Clarksburg. About a decade earlier, before earning my BSEE degree, I was working as an electronics technician at ...

Five Traits of Highly Effective Engineers

Five Traits of Highly Effective Engineers - RF Cafe"Many engineers possess unique traits such as initiative and eagerness to learn that help make them more successful in their careers. Effective engineers use their resourcefulness and initiative to find solutions. They identify problems, but they aren't limited to finding, fixing, and troubleshooting. They assess their current situations and continually seek to improve upon the status quo. They listen and learn. They ask for ideas, consider possible solutions, and then synthesize opinions and facts to create appropriate responses. Here are some essential qualities found in the most successful engineers ..."

ConductRF RF Test Cables for Field Engineers

ConductRF RF Test Cables for Field Engineers 1/11/2018 - RF CafeConductRF's SiteFlex Range of ruggedized Field RF Test Cables are designed specially for Field Test Engineers working in applications that require on site RF Testing. These cables are directly compatible with handheld network and spectrum analyzers. Options include DC-7 GHz through DC-50 GHz. The ruggedized construction includes anti-torque connectors that are firmly attached to the cables external armor. Crush resistant SF cable can withstand 1,200 lbs./sq.in. Methuen, MA, is ConductRF's principle U.S. manufacturing location ...

A Few More Electronics-Themed Comics

Electronics-Themed Comics, March 1969 Electronics World - RF CafeTGIF. If this past week has had you on edge, cheer up -the weekend's almost here. Once the final fire has been put out - or is at least contained - give yourself a break and enjoy these tech-themed comics from a vintage issue of Electronics World magazine. My favorite is the one on page 83 which is a takeoff on the well-worn comedy meme of the husband trying to sneak back into the house after a night out with the boys. This poor guy has been outwitted by his wife, who evidently has a bit of tech savvy working for her ...

Hybrid 3-D Printing Method for Flexible Electronics

Hybrid 3-D Printing Method for Flexible Electronics - RF Cafe"It is often said that 'two heads are better than one;' for the Air Force, leveraging the expertise and insights of academia has led to advances in materials development and processing destined to be a game changer for the future fight. A collaboration between scientists at the Air Force Research Laboratory and Harvard University's Wyss Institute for Biologically Inspired Engineering has resulted in a new method for digital design and printing of stretchable, flexible electronics. The process, called Hybrid 3-D printing, uses additive ..."

Author: Kirt Blattenberger on Google+ Author:
Kirt Blattenberger