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Today in Science History

Antenova's New Grandis Antenna for ISM, LPWAN, IoT and Smart Cities

Antenova's New Grandis Antenna for ISM, LPWAN, IoT and Smart Cities - RF CafeAntenova, manufacturer of antennas and RF antenna modules for M2M and the Internet of Things, is announcing a new antenna, Grandis, part number SR42I010. It is an SMD antenna that is physically smaller yet provides enhanced performance in the 863-870 MHz and 902-928 MHz bands. It directly targets the growing number of M2M and IoT applications using the LPWAN protocols. With Grandis, Antenova has reduced the footprint of the LPWAN antenna to 12.0 x 11.0 x 1.6 mm, while also enhancing the antenna’s performance ...

Engineering Crossword Puzzle for May 28

Engineering Crossword Puzzle for May 28, 2017 - RF CafeFor the sake of avid cruciverbalists amongst us, 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 (e.g., Hedy Lamarr). Enjoy! ...

Norelco Advertisement, April 1957 Radio & TV News

Norelco Advertisement, April 1957 Radio & TV News - RF CafeYou will be excused for not knowing that Norelco, famous today (or was it seemingly just yesterday?) for its line of electric shavers, coffee makers, and cassette recorders, once was famous for its radio loudspeakers. Norelco also offered a line of wooden speaker cabinets. This advertisement appeared in the April 1957 issue of Radio and TV News magazine. "Sink me, the copy writer's a poet," to paraphrase Sir Percy Blakeney from The Scarlet Pimpernel ..."

National Instruments Preview 5G to 6G

National Instruments Preview 5G to 6G - RF CafeFinally! This is the first mention I have seen of sixth-generation (6G) cellular networks and equipment... well, at least since my 2015 article Proposed 6G Cellular Standard Announced. "5G is not yet standardized, but wireless carriers know that if they wait to invest they will fall behind... Meanwhile, engineers at DARPA have created a competition for software defined radios that could completely change the nature of wireless transmissions. Today's 5G testing and tomorrow's 6G work were both on display this week ..."

Particle-Free Quantum Communication Achieved in Lab

Particle-Free Quantum Communication Achieved in Lab - RF Cafe"Four years ago, theoretical physicists proposed a new quantum-communication scheme with a striking feature: it did not require the transmission of any physical particles. The research raised eyebrows, but now a team of physicists in China claims it has demonstrated that the "counterfactual" scheme works. The group built an optical apparatus that it says can transfer a simple image while sending (almost) no photons in the process. The theoretical proposal was put forward by ..."

The Power FET

The Power FET, June 1969 Electronics World - RF CafeCrystalonics is not a name that immediately comes to mind when thinking about semiconductor manufacturers. They appear in this 1969 article in Electronics World magazine about power field effect transistors (FETs). Many semiconductor companies came and went in the last days of vacuum tube active devices. Surprisingly, a Google search revealed that Crystalonics is alive and well in Ronkonkoma, New York. Per their website: Formed in 1958, CRYSTALONICS is a broad line semiconductor manufacturer ...

Saelig Intros Teledyne LeCroy BPA Low Energy Bluetooth Protocol Analyzer

Saelig Intros BPA Low Energy Bluetooth Protocol Analyzer from Teledyne LeCroy - RF CafeSaelig Company, Inc. has announced the availability of the BPA low energy Bluetooth Protocol Analyzer from Teledyne LeCroy - a powerful, portable protocol analyzer for wireless transmissions that adhere to Bluetooth low energy specifications. Ideal for field or lab use, the BPA low energy analyzer is USB powered, eliminating the need for an external power supply. This analyzer supports all of the mandatory Bluetooth low energy features through Bluetooth version 4.2, and ships with Frontline ...

The Benefits of Antenna Testing

Antenna Test Lab Co Anechoic Chamber - RF CafeGlenn Robb, owner of Antenna Test Lab Company, wrote a white paper titled "The Benefits of Antenna Testing" which is now available on RF Cafe. Since 2001, AntennaTestLab.com has evaluated countless antennas and RF transmitter products. With a fully anechoic chamber, antennas can be quickly developed and RF products refined and deployed. The key phrase in the paper is "...risks of non-testing ... often lead to impaired wireless system performance and poor product reputations." That applies to stand-alone, surface mount, and printed antennas. Can you afford ..."

Troll Systems Intros 8-Input Diversity Receiver

Troll Systems Intros 8-Input Diversity Receiver and Remote Antenna Site IP -Based Controller - RF CafeShown for the first time at NAB Troll's DMR series receivers combines a multi-channel microwave receiver with a remote site diversity antenna controller. The combination provides a two (2) to eight (8) channel diversity receiver for remote Electronic News Gathering (ENG) or law enforcement antenna sites. The DMR processor performs video decryption, encryption, video and audio decoding for local monitoring and secure IP transport to remote control centers. The DMR's front panel touchscreen enables live video and audio preview, control and ...

Wi-Fi Photographs People in 3D Through Walls

Wi-Fi Photographs People in 3D Through Walls - RF Cafe"Wi-Fi can pass through walls. This fact is easy to take for granted, yet it's the reason we can surf the web using a wireless router located in another room. But not all of that microwave radiation makes it to (or from) our phones, tablets, and laptops. Routers scatter and bounce their signal off objects, illuminating our homes and offices like invisible light bulbs. Now, German scientists have found a way to exploit this property to take holograms, or 3D photographs, of objects inside a room from outside ..."

VidaRF Announces 64-Way, 3.4-4.2 GHz, SMA Power Divider

VidaRF Announces 64-Way, 3.4-4.2 GHz, SMA Power Divider - RF CafeGet your SMA torque wrench oiled and calibrated! VidaRF offers new 64-way power divider model VPD-3442A64, with a frequency range from 3.4-4.2 GHz. Providing 30 W power as splitter and low insertion loss. SMA connectors. This model also provides high isolation port to port (≥20 dB) and excellent amplitude and phase balance (≤±10°). Operating temp -55 to +85 °C. Sealed and painted to meet IP65 standards ...

Assurance Technology Corporation Looking RF Design Engineers

Assurance Technology Corporation Looking RF Design Engineers - RF CafeAssurance Technology Corporation has several positions available for RF Engineers to design and develop RF receivers for space, airborne and tactical applications. Frequency ranges include HF, VHF, UHF and above (to K-band). Transmitter and power amplifier design engineering positions are also available. The facility is NW of Boston, Massachusetts, outside of the congested city, but near Lowell. Take a look at the photo of their campus - what a place to work! ...

Comics with an Electronics Theme, August 1955 Popular Electronics

Comics with an Electronics Theme, August 1955 Popular Electronics - RF CafeAfter a long, tough week, Friday is always a good time for a little levity. These two electronics-themed comics appeared in the August 1955 edition of Popular Electronics. At the bottom of the page is a list with more than 70 other collections of electronics-themed comics from vintage magazines like Electronics World, Radio and Television News, Radio Craft, and others ...

Fairview Microwave Low-PIM 4.3-10 Connectors and Adapters

Fairview Microwave Launches New Low-PIM 4.3-10 Connectors and Adapters - RF CafeFairview Microwave has released 18 new 4.3-10 connectors and adapters with low-PIM performance of -166 dBc typical and a maximum operating frequency of 6 GHz. Typical applications include wireless base stations, small cells, custom cable assemblies, antenna feeder cables, mobile communications systems and distributed antenna systems (DAS). Fairview's new 4.3-10 connectors and adapters deliver VSWR as low as 1.08:1 and low coupling torque. They feature silver-plated center contacts and a tri-metal finish. They feature silver-plated center contacts and a tri-metal finish on the body ...

Stable 1-dimensional Metallic Material Created

Stable 1-Dimensional Metallic Material Created - RF Cafe"Researchers have developed the world's thinnest metallic nanowire, which could be used to miniaturise many of the electronic components we use every day. The researchers, from the Universities of Cambridge and Warwick, have developed a wire made from a single string of tellurium atoms, making it a true one-dimensional material. These one-dimensional wires are produced inside extremely thin carbon nanotubes (CNTs) - hollow cylinders made of carbon atoms. The finished 'extreme nanowires' are less ..."

Many Thanks for Alliance Test Equipment's Support!

Alliance Test EquipmentAlliance Test sells used / refurbished test equipment, we offer short- and long-term rentals. We also offer repair, maintenance and calibration. Prices discounted up to 80% off list price. Agilent/HP, Allied Test Equipment Products - RF CafeTektronix, Anritsu, Fluke, R&S and other major brands. A global organization with ability to source hard to find equipment through our network of suppliers. Please visit Allied Test Equipment today to see how they can help your project ...

NASA Mission Uncovers Dance of Electrons in Space

NASA Mission Uncovers Dance of Electrons in Space - RF Cafe"You can't see them, but swarms of electrons are buzzing through the magnetic environment - the magnetosphere - around Earth. The electrons spiral and dive around the planet in a complex dance dictated by the magnetic and electric fields. When they penetrate into the magnetosphere close enough to Earth, the high-energy electrons can damage satellites in orbit and trigger auroras. Scientists with NASA's Magnetospheric Multiscale, or MMS, mission study the electrons' dynamics to better understand their behavior. A new study, published ..."

Radar Simulator to Characterize Debris Particles in Tornadoes

Radar Simulator to Aid Characterization of Scattering Debris Particles in Tornadoes - RF Cafe"A team of researchers from University of Oklahoma's Advanced Radar Research Center have jointly developed the world’s first numerical polarimetric radar simulator. The simulator will be used to study and characterize scattering mechanisms of debris particles in tornadoes. Scattering debris from a tornado is known to cause most of the damages. A tornado's debris characteristics are generally poorly understood even though the upgradation of the radar network to a dual polarimetric radar offers ..."

Tech Industry Headlines

Tech Industry Headlines - RF Cafe- Archive -

Hackers Unlock Samsung Galaxy S8 with Fake Iris

Consent Decree, Forfeiture Terminate FCC Interference Investigation

Euro 5G Consortium Releases Roadmap with No Direction

U.S. Cablecos Strike $2.4B Merger deal

Serious Injuries at Tesla Plant 2x Industry Average

Fake IC Battle Gets a New Weapon

General Dynamics Tests Military 4G Net for Broadband Capabilities over the Ocean

Google for Jobs Employs Machine Learning to Help People Find Work

China's Semiconductor Industry and 'Win-Win' Growth

Notable Tech Quote: Glenn Robb

Notable Tech Quote: Glenn Robb - RF Cafe"Wishful thinking is not a good system test practice." - Glenn Robb, owner of Antenna Test Lab Company of Raleigh, North Carolina. Glenn happened to use that line in a note to me, and I asked permission to use it as a Notable Quote ...

Written in the Stars

Written in the Stars, September 1953 QST - RF CafeRod Newkirk was a frequent contributor to the ARRL's QST magazine. In addition to writing the "How's DX?" column from 1947 to 1978, he occasionally had humorous short stories related to Hamdom. Here, Ms. Susie Sopenwater (a sort of 'soap and water' portmanteau; i.e., pure and clean) gets interested in amateur radio after winning the Miss America pageant and finds plenty of volunteers to help her earn her license and set up a 'shack.' Susie's call sign was, WN5P!P. My guess is that the WN5 part is an allusion ...

Please Welcome Axiom Test Equipment as a New Advertiser

Axiom Test Equipment - RF CafeAxiom Test Equipment allows you to rent or buy test equipment, repair test equipment, or sell or trade Axiom Test Equipmenttest equipment. They are committed to providing superior customer service and high quality electronic test equipment. Axiom offers customers several practical, efficient, and cost effective solutions for their projects' TE needs and is committed to providing superior customer service and high quality electronic test equipment. Please check out Axiom Test Equipment today! ...

BrightSparks Trophies Make Their Mark

BrightSparks Trophies Make Their Mark - RF Cafe"An important element of any awards ceremony, of course, is the award itself. And BrightSparks 2017 would be no different. But to celebrate innovative and young winners we wanted to avoid familiar, tried and tested trophies and statuettes. Step forward Saar Drimer, a talented designer, who agreed to customise and create the BrightSparks trophies. A distinctively unique 'supra-component' of the awards ceremony! The trophies were certainly well received on the day. Comments we overheard ..."

Empower RF Systems Remote Live Demonstrations at IMS 2017

Visit Empower RF Systems at IMS 2017 Booth 1007 for Remote Live Demonstrations - RF CafeEmpower RF Systems is conducting remote live demonstrations of our broadband, high power 1 kW, 1 to 3 GHz amplifier, Booth 1007. The amplifier will be housed in Los Angeles and viewed in the Hawaii exhibit venue with live streaming video while remotely controlling the amplifier from the exhibit floor through a standard web browser. What you will see is a demonstration of remote operation of the Empower 2170 1 kW RF amplifier in a test setup that includes a signal generator ...

USAF Electronic Weapons to Get an Electromagnetic Power Boost

USAF Electronic Weapons to Get an Electromagnetic Power Boost - RF Cafe"The Air Force is working with Raytheon to integrate high power electromagnetic (HPEM) capabilities with cyber and electronic warfare weapons systems to increase the effectiveness of EW weapons through higher energy pulses and the use of new methods of backdoor penetration. Raytheon, along with other industry developers, will experiment with and develop the most efficient and effective way to integrate HPEM technology with cyber and electronic warfare weapons systems. The goal is to identify the ideal radio frequency ..."

IC Frequency Dividers & Counters

IC Frequency Dividers & Counters, January 1969 Electronics World - RF CafeThe subject of IC-based digital circuits was relatively new in 1969 when this story was printed in Electronics World magazine and was probably considered expert knowledge. Note that it was written by a research engineer at the Lockheed Missiles and Space Company. Today, introductory digital logic courses begin with material presented here and advance rapidly into programmable logic, ASICs microprocessors, and beyond. Even if you have already taken courses on digital logic with counters and dividers, the knowledge might ...

Engineering Career and Job Hunting Advice for May 2017

Engineering Career and Job Hunting Advice for May 2017 - RF CafeReports on which jobs are seeing the fastest growth in a particular state are to be read with a bit of skepticism because intentional or not, bias and error are always an integral part of the results. The Monster job website presents just such a survey, and it is worth looking at since it does give a good idea of what types of jobs are in demand overall. It might just be accurate to boot. Evidently electrical and electronics repairers are ...

- 5 Ways to Open Your Next
    Business Presentation (unique)
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    to Find Talented Candidates
- Engineering Dominates <more...>

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Kirt Blattenberger - RF Cafe WebmasterCopyright
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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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