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Today in Science History

Tech Industry Headlines

Tech Industry Headlines - RF Cafe- Archive -

Automotive Radar Chip Processes 30 Gb/s of Data

• 11 Myths About Motors

EDI CON China 2020 to be Held in October

U.S. Space Force Lays out Acquisitions Reforms in Report

• China Falling Way Short of "Made In China 2025" IC Target

Bi-Directional NFC to/from Smartphones Now Supported

2020 IEEE Texas Symposium on Wireless & Microwave Circuits to Be Held Virtually

• UK Nears Final Stage of Skynet Competition

China's Tech Reach Falls Short of Its Ambitions

Mac's Service Shop: Electrostatics at Work

Mac's Service Shop: Electrostatics at Work, February 1973 Popular Electronics - RF CafeElectronics wizard, repairman, and experimenter extraordinaire Mac McGregor, as sort of alter ego of author John T. Frye, provides a brief lesson on electrostatics for his repair shop apprentice wing man Barney (I don't think his last name was ever mentioned). In this 1973 Popular Electronics magazine article, Mac had built two types of electroscopes - one using a pair of pith balls suspended from silk strings and another that was a cobbled-together version of a gold leaf electroscope. His motive was two-fold. First and foremost was to accommodate his own interest in electrostatics, and second to hopefully engender enough curiosity in Barney to cause him to do a dive into science books to learn more. Given the potentially lethal levels of electrostatic charge that builds on TV picture tubes they worked around, gaining a healthy respect for an electrostatic charge...

CEA-Leti Explore 6G Technology Roadmap in mm-Wave Bands

CEA-Leti Explore 6G Technology Roadmap in mm-Wave Bands - RF Cafe"As countries around the world begin rolling out 5G wireless networks, CEA-Leti, a technology research institute, is looking ahead to 6G technologies that will surpass the data-transfer capability of 5G. The wireless communication in mm-Wave bands, ranging from 20 to 300 GHz, is expected to be a key enabling technology for 6G wireless systems. This is because of the huge available bandwidth that can accommodate ultra-high data-rate communications. Within that range of mmWave bands, CEA-Leti's research is investigating D-band, a new spectrum at 140 GHz that may play a major role in 6G wireless communication. In a paper written for the 6G Wireless Summit, which was scheduled to take place in March but got cancelled because of the coronavirus pandemic, CEA-Leti, and Siradel, a French engineering... "

Frequency Modulation Fundamentals

Frequency Modulation Fundamentals, August 1939 QST - RFCafeFrequency modulation (FM) was, is, and always shall be: x(t) = Xc·cos [Ωct + β·sin (Ωmt)], where the carrier is xc(t) = Xc·cos (Ωct), and the modulating signal is xm(t) = β·sin (Ωmt). Yea verily, thus sayeth Edwin H. Armstrong. Amen, brothers and sisters of radio. The methods for generating and degenerating[sic] FM might vary, but the fundamentals do not vary. Mr. Armstrong developed and patented his system of frequency modulation in the late 1920s and early 1930s, so when this article appeared in QST in 1939, FM was still fairly new - or even unknown - to most people. Household radio dials still had only markings for the commercial AM band (520 - 1720 kHz) and, in a few cases, a couple shortwave bands (also AM)...

Withwave Precision Adapters for 2.92 and 3.5 mm

Withwave Precision Adapters for 2.92 and 3.5 mm - RF Cafe Withwave's Precision Test Adapters are designed based on precision microwave interconnection technologies. These new 2.92 mm to 3.5 mm types are manufactured to precise microwave specifications and constructed with male and female gender on both sides. The precision microwave connector interfaces ensure an excellent microwave performance of 1.25:1 (max) VSWR up to 34 GHz.

Microwave Filters, Impedance-Matching Networks, and Coupling Structures

Microwave Filters, Impedance-Matching Networks, and Coupling Structures - RF Cafe"Microwave Filters, Impedance-Matching Networks, and Coupling Structures," by Matthaei, Young, and Jones, is another classic text that was a go-to reference for filter designers before desktop synthesis software was commonplace. It is also available on the Archive.org website - all 1,115 pages of it. While you are at Archive.org, do a search on any topic of interest and likely you will receive more sources than you ever dreamed were available on the Internet. That includes books, technical reports, white papers, magazine articles, videos, audios, music, podcasts, and other media formats. It is truly a unique and indispensible repository of information. The WayBack Machine has been capturing website pages for more than two decades. It has collected pages from RFCafe.com during 888 sessions between October 13, 1999 and May 13, 2020.

KR Electronics: RF & Microwave Filters

KR ElectronicsKR Electronics designs and manufactures high quality filters for both the commercial and military markets. KR Electronics' line of filters includes lowpass, highpass, bandpass, bandstop and individually synthesized filters for special applications - both commercial and military. State of the art computer synthesis, analysis and test methods are used to meet the most challenging specifications. All common connector types and package form factors are available. Please visit their website today to see how they might be of assistance. Products are designed and manufactured in the USA.

Sweden Electronics Market

Sweden Electronics Market, December 27, 1965 Electronics Magazine - RF CafeThis is the electronics market prediction for Sweden, circa 1966. It was part of a comprehensive assessment by the editors of Electronics magazine of the state of commercial, military, and consumer electronics at the end of 1965. Among Sweden's modern-day most recognizable electronics and related manufacturers are Ericsson, Saab Group and Electrolux, in existence in one form or another since 1965. Automotive company Volvo is also among the largest manufacturers there, although not specifically of electronics. A number of contemporary resources are available for obtaining reports (at a cost) on the electronics industry in almost every country on Earth. Among them are "Consumer Electronics in Sweden, August 2019" and "Electronics Industry in Sweden June 2019..."

AWR Web-Based Training Presents mmWave MIMO Radar System Design

AWR Design Environment Web-Based Training Presents mmWave MIMO Radar System Design - RF CafeCadence| AWR will host a free webinar entitled "AWR Software Web-Training on mmWave MIMO Radar System Design," presented by RF filter expert Dr. Tero Kiuru. Overview: This web-based training session uses Cadence® AWR Design Environment® software to illustrate the design of a frequency modulated continuous wave (FMCW) multiple-in-multiple-out (MIMO) radar system for short range high resolution localization of nearby moving objects. Dr. Tero Kiuru, of the VTT Technical Research Centre of Finland Ltd., is an expert in front-end component design. Four-channel transmitter and receiver chips will be designed using a 130 nm silicon germanium (SiGe) process. Measurements will be made with a 4 TX channel and 8 RX channel system and simulation versus measurement results...

Jet Propulsion from Microwave Energy

Jet Propulsion from Microwave Energy - RF CafeThis news item is worth reading if only for the reader comments at the bottom of the page - which is often the best part of any new story, BTW. The author, who extols the virtues of this fossil fuel-less jet propulsion scheme, does not say from whence the the massive amount of energy for generating microwaves comes - an onboard nuclear power generator perhaps. My thought was, considering this research came out of the Institute of Technological Sciences at Wuhan University, China, that the hope is those foreign devils will glom onto the concept to create jet planes and drones with the most massive electromagnetic signature a smart missile could ever hope for. Rumor |one I just made up ;-)|  has it the project is code named COVID, for Cavity Oscillator Velocity-Inducing Deception.

EMC Directory - Largest Online Directory of EMC Testing Labs 

EMC Directory - The Largest Online Directory of EMC Testing Labs - RF CafeEMC Directory, a new addition to the everythingRF network of engineering resources, is the largest online directory of EMC / EMI Testing labs. The website makes it easy for users to find EMC labs based on their location and testing capabilities. Users can specify the application like Automotive, Radio Technology, Industrial, Medical etc. to find labs that can carry out the test in a specific region. They can also find labs based on the testing directive like CISPR 11, FCC Part 15 (Sub part b) or ISO 10605. EMC testing is performed to ensure that the electronic devices: Have sufficient immunity to electromagnetic interference. They do not create excessive electromagnetic radiation EMC Testing is a very important area for most engineers and companies. Regulatory bodies around the world like FCC, CE, have placed limits on the levels of emissions that electronic and electrical products can generate...

Filter Design Classics

"Handbook of Filter Synthesis," by Anatol Zverev - RF CafeIf it seems like I use opening phrases like, "Back in the days before..." and "There was time when..." a lot, it is because I do, and unabashedly so. The measure of oldness of time past is relative and objective, and unless a particular bit of information on a topic has been proven false or unreliable, there is value in its continued existence and in its continued use as a reference. Such is the case of a book that used to be found somewhere in the offices of every electrical design company: "Handbook of Filter Synthesis," by Anatol Zverev. Another filter design standard tome is "The Design of Filters Using the Catalogue of Normalized Low-pass Filters," by Rufolph Saal. General Electric AESD, in Utica, NY, my first company after graduation, had them in the library. The latter has been uploaded in its entirety to Archive.org by RF Cafe visitor Brad B. The former is also on Archive.org compliments of another Good Samaritan. We thank them both.

Atenlab: Over-the-Air RF & Microwave Measurement Systems

Atenlab microwave components - RF CafeAtenlab has been operating in Taiwan for more than a decade, and has sold and installed hundreds chambers around the world. Holistic, affordable Over-the-Air (OTA) measurement systems perform comprehensive measurement and test in a controlled environment. Compact Antenna Test Range (CATR) with one-touch operation supports multiple systems - 2G, 3G, 4G, 5G - and major instrument brands. [M]ulti-probe OTA measurement systems offer reduced time measurements over single-probe systems.

A Radioman's Wife Puts in a Good Word

A Radioman's Wife Puts in a Good Word, June 1951 Radio-Electronics - RF CafeIn the days before people were so easily offended by light-hearted poking, it was not uncommon to find magazine articles written by the wives of hobbyist husbands lamenting the habits and proclivities of their matrimonial mates. Over the years I have read many such treatises in model and full-scale airplane, electronics, and Ham radio publications. As with "A Radioman's Wife Puts in a Good Word" from a 1951 issue of Radio-Electronics, they typically start by expressing frustration of having lost their once-doting husbands to alternative loves in the form of hobbies (I once saw a boat named "The Other Woman"). Determined to win back the devotion of their sweethearts, they make a sincere attempt to learn about and be part of whatever hobby or hobbies is/are the cause of abandonment of wife and children. It usually doesn't take long for Friend Wife, as Popular Electronics' Carl Kohler addresses his better half, to decide that try as she may, engendering sufficient enough...

Z-Comm Extremely Low Powered Clock VCO in a SUB-L Package

Z-Communications' Extremely Low Powered Clock VCO in a SUB-L Package - RF CafeZ−Communications, Inc., announces the RoHS compliant VCO (Voltage-Controlled Oscillator) model SMV4596L−LF for highly stable clock generators. The SMV4596L−LF covers 4595 to 4598 MHz within a tuning voltage range of 0 to 2.5 Vdc. This low cost VCO consumes typically less than 15mW of power while still delivering phase noise performance of -81 dBc/Hz @ 10 kHz offset. This unparalleled VCO operates off a 2.8 Vdc supply while drawing a mere 5mA of current. The SMV4596L-LF is designed to deliver −1±2 dBm of output power into a 50 ohm load while operating over the industrial temperature range of −40 to 85°C. This remarkable VCO is further enhanced by its better than 1.1:1...

Elon Musk: The Buck Stops Here

Elon Musk: The Buck Stops Here, Falcon 9 - RF CafeAfter decades of politicians and industry titans dodging blame for things that go wrong on their watch and demanding full credit for what goes right, it is refreshing to be read this statement from SpaceX's Elon Musk, "I'm the chief engineer of this thing so I'd just like to say that if it goes right, it's credit to the SpaceX-NASA team. If it goes wrong, it's my fault." This is just ahead of the planned historic launch of NASA astronauts from Cape Canaveral this evening, Wednesday 27th, at 4:33 pm. Astronauts Bob Behnken and Doug Hurley will be launched to the International Space Station in a SpaceX Crew Dragon spacecraft atop a Falcon 9 rocket. The launch is the first time that astronauts have launched from American soil since 2011 when the Space Shuttle program was axed. Since that time we have paid the Communist nations of China and Russia to ferry our astronauts to and from space. Imagine the technology we had to transfer to them to get a safe ride! Watch the launch live on NASA TV.

Gray Market Electronics - Reaping What We've Sown

Gray Market Electronics - Reaping What We've Sown - RF Cafe SmorgasbordGray market electronics components have been a problem for a long time. An extensive article appeared recently in EE Times reporting on a case based on a small operation in south Florida that was importing and re-selling counterfeit parts to military, aerospace, medical, and other product manufacturers. The Feds charged them "with conspiracy, trafficking in counterfeit goods and mail fraud for knowingly importing more than 3,200 shipments of suspected or confirmed counterfeit semiconductors into the United States, marketing some of the products as "military grade" and selling them to customers that included the U.S. Navy and defense contractors." The good news might be that this particular scam operation was caught and stopped, but the bad news is, according to the story, that many more are never prosecuted...

ConductRF High Flex VNA Test Cables for 40, 50 & 70 GHz

ConductRF High Flex VNA Test Cables for 40, 50 & 70 GHz - RF CafeConductRF offers RF Engineers a large selection of Hi Flex cable for vector network analyzers (VNAs). We have standards for applications at 18-40 GHz, 50 GHz & 70 GHz. Our torque resistant connector heads and phase stable constructions ensure great performance for many tests to come. Other key features include: 2.92 mm, 2.4 mm & 1.85 mm connector options, low VSWR & insertion loss, low phase change with flexing, options available swept right angle connectors. ConductRF VNA series provides customers with reliable ruggedized solutions for Lab and Production Vector Network Analyzer testing. With options for 18 GHz, 26.5 GHz, 40 GHz, 50 GHz, & 70 GHz, these cables offer cost leading alternatives to original OEM VNA cable solutions...

Innovative Power Products: RF & Microwave Passive Components

Innovative Power ProductsInnovative Power Products (IPP) has over 30 years of experience designing & manufacturing RF & microwave passive components. Their high power, broadband couplers, combiners, resistors, baluns, terminations and attenuators are fabricated using the latest materials and design tools available, resulting in unrivaled product performance. Applications in military, medical, industrial and commercial markets. Take a couple minutes to visit their website and see how IPP can help you today.

Anatech Electronics (RF Filters) - RF Cafe ConductRF Precision RF VNA Test Cables - RF Cafe
Windfreak Technologies Axiom Test Equipment - RF Cafe
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Copyright: 1996 - 2024
    Kirt Blattenberger,

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 World Wide Web (Internet) was largely an unknown entity at the time and bandwidth was a scarce commodity. Dial-up modems blazed along at 14.4 kbps while typing up your telephone line, and a nice lady's voice announced "You've Got Mail" when a new message arrived...

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