Electronics World articles Popular Electronics articles QST articles Radio & TV News articles Radio-Craft articles Radio-Electronics articles Short Wave Craft articles Wireless World articles Google Search of RF Cafe website Sitemap Electronics Equations Mathematics Equations Equations physics Manufacturers & distributors LinkedIn Crosswords Engineering Humor Kirt's Cogitations RF Engineering Quizzes Notable Quotes Calculators Education Engineering Magazine Articles Engineering software RF Cafe Archives Magazine Sponsor RF Cafe Sponsor Links Saturday Evening Post NEETS EW Radar Handbook Microwave Museum About RF Cafe Aegis Power Systems Alliance Test Equipment Centric RF Empower RF ISOTEC Reactel RF Connector Technology San Francisco Circuits Anritsu Amplifier Solutions Anatech Electronics Axiom Test Equipment Conduct RF Copper Mountain Technologies Exodus Advanced Communications Innovative Power Products KR Filters LadyBug Technologies Rigol TotalTemp Technologies Werbel Microwave Windfreak Technologies Wireless Telecom Group Withwave RF Cafe Software Resources Vintage Magazines RF Cafe Software WhoIs entry for RF Cafe.com Thank you for visiting RF Cafe!

Innovative Power Products Passive RF Products - RF Cafe

RF Cascade Workbook 2018 by RF Cafe

Please Support RF Cafe by purchasing my  ridiculously low−priced products, all of which I created.

RF Cascade Workbook for Excel

RF & Electronics Symbols for Visio

RF & Electronics Symbols for Office

RF & Electronics Stencils for Visio

RF Workbench

T-Shirts, Mugs, Cups, Ball Caps, Mouse Pads

These Are Available for Free

Espresso Engineering Workbook™

Smith Chart™ for Excel

Innovative Power Products Couplers
Homepage Archive - March 2019 (page 1)

These archive pages are provided in order to make it easier for you to find items that you remember seeing on the RF Cafe homepage. Of course probably the easiest way to find anything on the website is to use the "Search RF Cafe" box at the top of every page. About RF Cafe.

Homepage Archive Pages

2024:  Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec

2023:  Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec

2022:  Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec

2021:  Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec

2020:  Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec

2019:  Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec

2018:  Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec

2017:  Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec

2016:  Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec

2015:  Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec

2014:  Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec

2013:  Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec

2012:  1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 (no archives before 2012)

See Page 1 | 2 | 3 | 4  of the March 2019 homepage archives.

Friday 8

YL News and Views

YL News and Views, October 1966 QST - RF Cafe"YL" is the shorthand used by amateur radio operators when referring to female operators - Young Lady. Although still chosen as a hobby in larger number by men, ladies have long been avid participants in the art/science of Ham radio. The American Amateur Radio League's QST magazine devoted this "YL News and Views" column to their contributions many years ago - trendsetting in its day. This particular issue introduces Louise Ramsey Moreau as its new editor. Her interest in Ham radio was piqued when she realized "all the women heard on their receivers were not 'just wives,' but licensed operators." The rest, as said, is history ...

What You Need to Know About Radio Telescopes

What You Need to Know About Radio Telescopes - RF CafeLou Frenzel has a short piece on the Electronic Design website on a subject near and dear to me titled, "What You Need to Know About Radio Telescopes." I have owned and enjoyed using a few optical telescopes, but what I have always really wanted was a radio telescope. Aside from being tremendously expensive because of the extremely low noise receivers required, the space needed to accommodate steerable, high gain antennas is prohibitive on my meager budget. There are a few articles out there on cobbling together amateur radio telescopes, but are basically to "real" radio telescope what Galileo's first telescope was compared to my Celestron CPC 800. An advantage radio telescopes have over optical telescopes is the ability to operate in just about any weather, day or night ...

NI AWR AntSyn 3.1 Release Now Available

NI AWR AntSyn 3.1 Release Now Available - RF CafeNI AWR announces the latest release of the antenna design, synthesis and optimization module, AntSyn™ 3.1, is now available for use by current customers and evaluators. IoT accounts, like Striiv, have found this innovative EM-based synthesis tool valuable for designing antenna solutions for their products. Highlights of the release include: Additional antennas added to the library bringing the total number of templates to 537. New antenna types for series-fed patch arrays, as well as new waveguide-fed, dual-ridge, transverse electromagnetic (TEM) and multifunction horn antennas ...

Daylight Savings Time - Again!

Graphical Look at Daylight Saving Time - RF CafeCall me obsessive, but the switch to and from DST has bugged me not so much for its existence, but for butthead politicians that won't keep their hands off of it. A few years ago I wrote a piece titled, "A Graphical Look at Daylight Saving(s) Time," to deal with it, and then again last year with, "Daylight Saving(s) Time vs. Standard Time." Research the history of DST and you will see how often Congress has changed the days - always for good reasons, don't you know. In 1958, the year of my birth, DST began on April 27th 1958 Old Farmer's Almanac Daylight Savings Time - RF Cafe(vs. March 10th this year), and ended on September 28th (November 3rd this year) - See 1958 Old Farmer's Almanac pages. What else can I say on the matter?

Many Thanks to Bittele Electronics for Continued Support!

Bittele Electronics PCB Fabrication - RF CafeSince 2003, Bittele Electronics has consistently provided low-volume, electronic contract manufacturing (ECM) and turnkey PCB assembly services. It specializes in board level turnkey PCB assembly for design engineers needing low volume or prototype multi-layer printed circuit boards. Free Passive Components: Bittele Electronics is taking one further step in its commitment of offering the best service to clients of its PCB assembly business. Bittele is now offering common passive components to its clients FREE of Charge ...

Breakthrough in Quantum Communication Shows Promise

Breakthrough in Quantum Communication Shows Promise - RF Cafe"Researchers have created an optical chip that appears to solve one of the greatest challenges to developing optical quantum communication systems, potentially providing a reliable, cost-effective way to develop quantum communications. Many of the advanced communications systems being developed today utilize quantum mechanics to process, store, and transmit information. harnessing the principle of entanglement, where two particles become so intimately connected that they act as a single system, no matter how great the distance between the two particles might be. The problem for optical quantum systems which rely on photons is that the components that process and store information require visible-light photons ..."

Centric RF: Attenuators, Adapters, Cable Assemblies, Power Dividers

Centric RF microwave components - RF CafeCentric RF is a company offering from stock various RF and Microwave coaxial components, including attenuators, adapters, cable assemblies, terminations, power dividers, and more. We believe in offering high performance parts from stock at a reasonable cost. Frequency ranges of 0-110 GHz at power levels from 0.5-500 watts are available off the sheld. Order today, ship today! Centric RF is currently looking for vendors to partner with them. Please visit Centric RF today ...

Thursday 7

The Longitude Problem

Longitude: The True Story of a Lone Genius Who Solved the Greatest Scientific Problem of His Time - RF CafeKnowing that I am an avid consumer of literature pertaining to time and astronomy, Melanie picked up a book at the library for me titled, Longitude: The True Story of a Lone Genius Who Solved the Greatest Scientific Problem of His Time, by Dava Sobel. When Christopher Columbus discovered America, his intended target was, if you recall, the Indies. His original charter was to find a direct westerly pathway from the Atlantic coast of Europe to the immensely profitable trade production region of the Indies as an alternative to to sailing around the treacherous Cape of Good Hope at the southern tip of Africa. How could such an experienced navigator have missed his mark by so far, you might reasonably ask? Didn't Columbus know how to use a sextant, or at least have a navigator who could? The answer to the second question is, "no." The answer to the first question is complicated ...

Transient Specialists App Note 218: LV 124 & Other Test Solutions

Transient Specialists App Note 218: LV 124 & Other Test Solutions - RF CafeTransient Specialists, a leader in electromagnetic compatibility rentals for over 40 years, is excited to bring forward EM Test Application Note 218 for the PA5840 and Autowave for OEM LV 124. This test solution allows for a cost-effective option requiring minimum equipment and can be utilized in conjunction with preexisting test equipment. Transient Specialists conveniently located in the mid-west offers a variety of EMC test equipment rentals to accommodate your testing needs. Our rentals include technical support on the equipment, weekly and monthly rentals, and 2 days each way of transit time ...

Thomas Electronics for New or Refurbished CRTs

Thomas Electronics Cathode Ray Tubes - RF CafeIf you think cathode ray tubes (CRTs) are no longer used in new equipment, think again. Thomas Electronics, located in Clyde, NY, has been manufacturing, repairing, and refurbishing cathode ray tubes (CRTs) since 1948. TWTs, x-ray sources, and arc lamps are a few examples. Give new life to your vintage equipment with a new phosphor coating or specify a custom replacement. Thomas Electronics' product profile includes CRTs, high voltage power supplies, LCD backlights, LCD ruggedized displays, electromagnetic components, deflection coils, & monitors. Environments testing, magnetics, and custom glass working services are available. Check out the cool stuff on their website ...

Triad RF Systems 2018 Q4 Newsletter Available

Triad RF Systems 2019 Q1 Newsletter - RF CafeTriad RF Systems' Q1 2019 Newsletter reveals that our revenue grew over 40% from 2017 to 2018! A portion of the growth came from our military ultra wide-band power amplifiers, our new CubeSat product line, and continued strength from the MIMO radio market. Even though our staff grew over 23%, our profit margins increased as expected, allowing us to continue to heavily invest in new product development including high power radio systems. Our space product line and further development of our high powered MIMO radio subsystems continue to move forward with continued product releases coming throughout 2019. A summary of new product releases is also presented ...

Electronic Measurement Quiz

Electronic Measurement Quiz, January 1963 Popular Electronics - RF CafeThe early 1960s was evidently a good time for printing quizzes in electronics magazines. Popular Electronics was no exception. As I look through my collection I am finding quite a few. Here is the latest, from the January 1963 edition, that tests basic knowledge of using analog multimeters (digital types were not around yet). All are pretty straightforward; however, be careful with question 9. At first I thought maybe it was a trick question, but the key to arriving at the correct answer is noting that you are measuring a low resistance. Be sure to consider the properties of a standard multimeter of the era. Give it a try for yourself to see how well you fare ...

MEMS Resonator Controllable MHz-Range Filter, Isolator

Nanoscale MEMS Resonator Structure Yields Controllable MHz-Range Filter, Isolator - RF Cafe"By fabricating a nano-MEMS honeycomb lattice, researchers developed a solid-state device that can function as a voltage-tunable filter or unidirectional energy coupler for electrical energy in the 10- to 20-MHz range that's been converted into acoustic-like phonons. As electronic devices shrink, there's an increasing need for on-chip high-performance functions such as unidirectional waveguides (isolators), filters, and delay lines, especially those with key parameters that can be controlled on chip. A team of researchers from ZTH Zurich and Caltech is using silicon-nitride (SiN) nanomembranes that operate at high frequencies (10-20 MHz) as conduits for phonons, the acoustic-like waves passing through a solid or liquid material ..."

MECA Electronics: Passive RF & Microwave Components

MECA Electronics

Since 1961, MECA Electronics has designed and manufactured an extensive line of RF & microwave components for in-building, satellite, radar, radio, telemetry, mobile radio, aviation & ATC. Attenuators, directional & hybrid couplers, isolators & circulators, power dividers & combiners, loads, DC blocks, bias-Ts and adapters & cables. MECA has long been the 'backbone' of high performance wired and air-interfaced networks such as in-building applications, satellite communications, radar, radio communications, telemetry applications, mobile radio, aviation & air traffic communications ...

Wednesday 6

Hugo Gernsback on Radio Astronomy

Radio Astronomy, March 1953 Radio-Electronics - RF CafeHugo Gernsback wrote this editorial about the state of the art of radio astronomy in a 1953 issue of his Radio-Electronics magazine. He cites Dr. Jansky's discovery of radio frequency signals emanating from the center of our Milky Way galaxy, and the subsequent work done by radio astronomers in the interim. Little did Gernsback know that a mere decade later later, Bell Telephone Labs engineers Dr. Wilson and Dr. Penzias would serendipitously discover, using the company's "sugar-scoop" antenna, the ubiquitous cosmic microwave background radiation (CMBR) believed to be a signature of the "Big Bang" era. He predicted that, as is true for most realms of theoretical research, much collateral technology would be created as a result. Ultra low noise, cryogenically cooled receivers are an obvious example ...

WAMICON 2019: April 8th & 9th

WAMICOM 2019: April 8th & 9th - RF CafeDon't wait too long to make your plans for attending WAMICON 2019. It runs April 8th and 9th, in Cocoa Beach, Florida. The 20th annual IEEE Wireless and Microwave Technology Conference (WAMICON 2019) will address up-to-date multidisciplinary research needs and interdisciplinary aspects of wireless and RF technology. The central theme of WAMICON2019 will be " Simulation Driven Design of Emerging Wireless, Microwave and mm-Wave Circuits and Systems." The committee welcomes submissions on all aspects of related technologies, including antennas, passive and active circuits, communication theory, and system concepts ...

Quantum Computing 101: 5 Key Concepts to Understand

Quantum Computing 101: 5 Key Concepts to Understand - RF CafeThe concept of quantum computing has always been a bit fuzzy for me - ditto for quantum entanglement (Einstein called it "spooky action at a distance"). Admittedly, I haven't done a lot of reading on either technology. Both are still mostly laboratory curiosities at this point in time. Design News magazine has a brief introduction titled, "Quantum Computing 101: 5 Key Concepts to Understand" that presents some of the common terminology. If you like the mathematics of statistics, eigenvalues, superposition, complex coefficients, 2n-dimensional vectors, and bra−ket notation , then quantum computing might just be your thing. BTW, per Wikipedia, "the ket is an element of a vector space, the bra is technically an element of its dual space" - I didn't make that up ;-)

Electronic Terminology Crossword Puzzle from the October 1960 Electronics World

Electronic Terminology Crossword Puzzle, October 1960 Electronics World - RF CafeElectronics magazines of the last century regularly published theme-based crosswords, like this "Electronic Terminology Crossword Puzzle" one from a 1960 edition of Electronics World. Working crossword puzzles has been shown to be a simple activity that can help prevent or at least stave off some forms of mental atrophy. It is a medical fact that as you grow old and/or cease presenting yourself on a regular basis with mental and physical challenges, your brain actually begins to lose gray matter and synapse interconnections are lost. Working crossword puzzles is a healthy mental exercise that helps increase your vocabulary and improve cognitive skills. That is one reason I create my own weekly crossword puzzle for RF Cafe visitors ...

R&S USA White Paper: "Radio Fundamentals for Cellular Networks"

Rohde & Schwarz Wireless Communication News - February 2019 - RF CafeRohde & Schwarz USA has published a downloadable white paper titled "Radio Fundamentals for Cellular Networks." In just four decades, cellular technologies have advanced from 1G analog technologies to advanced high-performance 4G and 5G systems. Learn more about how LTE-A Pro paves the way to 5G NR and how 5G mmWave challenges design and testing of devices below in this newsletter. Also, stay up to date on the latest industry trends by following our Wireless Communications channel on LinkedIn for advanced information on the test innovations we are showcasing, along with the latest technology trends and our educational resources ...

Polariton Filter Turns Ordinary Laser Light into Quantum Light

Polariton Filter Turns Ordinary Laser Light into Quantum Light - RF Cafe"An international team of researchers led out of Macquarie University has demonstrated a new approach for converting ordinary laser light into genuine quantum light. Their approach uses nanometer-thick films made of gallium arsenide, which is a semiconductor material widely used in solar cells. They sandwich the thin films between two mirrors to manipulate the incoming photons. The photons interact with electron-hole pairs in the semiconductor, forming new chimeric particles called polaritons that carry properties from both the photons and the electron-hole pairs. The polaritons decay after a few picoseconds, and the photons they release exhibit distinct quantum signatures. The teams' research was published overnight in the journal Nature Materials. While these quantum signatures are weak at the moment, the work ..."

ConductRF: Precision & Standard Grade RF Cable Assemblies

ConductRF coaxial cables & connectors - RF CafeConductRF is continually innovating and developing new and improved solutions for RF Interconnect needs. See the latest TESTeCON RF Test Cables for labs. ConductRF makes production and test coax cable assemblies for amplitude and phased matched VNA applications as well as standard & precision RF connectors. Over 1,000 solutions for low PIM in-building to choose from in the iBwave component library. They also provide custom coax solutions for applications where some standard just won't do. A partnership with Newark assures fast, reliable access. Please visit ConductRF today to see how they can help your project!

Tuesday 5

GATT, Bell Labs, Space Needles, & In−Car Entertainment Systems

GATT, Bell Labs, Space Needles, & In−Car Entertainment Systems - RF CafeThe General Agreement on Tariffs and Trades (GATT) has been around for a really long time - since 1947, shortly after the end of World War II. It changed its name to the World Trade Organization (WTO) in 1995. Japan was admitted as a GATT signatory in 1964 according to this Electronics magazine newsletter. One of the conditions for membership was allowing foreign ownership of businesses on Japanese soil - previously prohibited. Texas Instruments was the first American company to establish a presence there. Japanese industry was just getting a foothold on manufacturing and selling into foreign markets in the mid 1960s, and was still working to shed its reputation - deserved or not - of producing inferior quality goods. Increasing foreign presence and dependence on the country's economic well-being was a good thing for them. In fact, many pundits believe that the globalization of production is key to preserving peace (or at least not war) between certain countries ...

IMS Expert Insights: 5G to Be a Boon for Legal Concerns

5G Creates Ripe Environment for Commercial Disputes and Disruptive Innovation - RF CafeThe good folks over at IMS ExpertServices, who have published many great summaries of technology-related legal disputes, just posted this piece titled, "5G Creates Ripe Environment for Commercial Disputes and Disruptive Innovation." "Innovations and novel commercial and industrial solutions related to 5G roll-out will result in new business opportunities. They are likely to also bring disruption to existing businesses, and intellectual property disputes. To gain greater insight into how these disruptions and opportunities could effect the commercial litigation community, IMS interviewed Robert Dezmelyk, IMS Elite Expert in wireless communications. He offered his insights on the impact of the next generation of wireless technology ..."

Parallel Circuits per U.S. Navy NAVPERS 10622

Electricity - NAVPERS 10622 - Parallel Circuits - RF CafeThe study of parallel circuits typically follows on the heels of series circuits because at least for resistance and inductance, the math is easier. Capacitance in parallel, on the other hand, use the equations and methods of resistance and inductance in series. Unfortunately, though, for newcomers, series capacitance uses the equations and methods of resistance and inductance in parallel. Sure, most RF Cafe visitors covered all that stuff years ago, but as I've mentioned before, there are always new people coming into the electrical and electronics craft. These NAVPER Basic Navy Training Courses were and still are heralded as being excellent introductory material for students entering the realm. I don't know if it's still so, but back in the post World War II era and up through the 1980s civilian employers assigned great regard to and preference to for U.S. Navy (and, ahem, Air Force) electronic technicians when hiring ...

NI AWR Software Solutions for RF Module Development

NI AWR Software Solutions for RF Module Development White Paper - RF CafeNI AWR has a new white paper exploring the fundamental design challenges faced when creating and producing high-frequency modules for a range of wireless system applications is now available in the ni.com/awr resource library. The paper details how the NI AWR Design Environment platform supports the design and integration of these modules in the shortest time possible with the ability to perform circuit, system and electromagnetic (EM) co-simulation within a single, integrated environment that also supports interoperability with industry-leading computer-aided design (CAD) tools ...

New Resonator Technology 5G Filters

New Resonator Technology Targets Next-Generation Filters - RF CafeChris DeMartino, at Microwaves & RF magazine, has a report on a new filter design and realization technology dubbed XBAR that was pioneered by Resonant. XBAR is a proprietary technique that boasts "a resonating structure that has the strongest acoustic-wave coupling of any resonating structure on the market right now. It offers three to four times more bandwidth than the 4G resonators used in the mobile space right now." Doing so enabled bandwidths in the hundreds of MHz, and eventually upper frequencies into the GHz realm. Resonant is an IP company that develops the filter designs and then licenses the technology to manufacturers for implementation ...

Charging Electronic Devices with Static Electricity

Charging Electronic Devices with Static Electricity - RF Cafe"Scientists from the University at Buffalo in New York are looking into a common but mysterious phenomena - static electricity. Experts believe that this form of electricity could be one day utilized to power all sorts of electronic devices, provided we find out exactly how it works and functions. And a new study may shed some light on this strange occurrence. Researchers believe that the actual cause of static electricity is due to small structural changes at the surface of materials. These changes arise when certain materials come into contact with each other, and friction occurs. Scientists believe this revelation could help in the design and creation of longer-lasting, sustainable power sources for many small electronic devices ..."

Rohde & Schwarz: RF & Microwave, Analog, Digital, & Optical Test Equipment

Rohde & Schwarz RM & Microwave Test Equipment - RF CafeRohde & Schwarz develops, produces and markets test & measurement, information and communications technology. Focus is on test and measurement, broadcast and media, cybersecurity, secure communications, monitoring and network testing. Markets serviced are wireless, the automotive industry, aerospace and defense, industrial electronics, research and education, broadcast and media network operations, consumer electronics, cybersecurity for business and governments, communications and security solutions for critical infrastructures and the armed forces, reconnaissance equipment for homeland and external security, and much more ...

Monday 4

Inexpensive R.F. Wattmeter

Inexpensive R.F. Wattmeter, June 1955 Radio & Television News - RF CafeAmateur radio operators (Hams) and electronics hobbyists are always on the lookout for a good deal on a good piece of test equipment (TE). One way to accumulate a budget minded bench of TE is to find a way to combine the functions of separate pieces to effect a new instrument. This RF wattmeter was R.A. Thomason's method. It uses a simple application of Ohm's law for converting electrical current into power values using a bank of high power resistors and an external ammeter. Hand-dandy conversion charts are provided for two different values of detector resistors, but the scales could easily be changed to accommodate any resistor value. Note that the power dissipating resistor bank is composed of two series-connected sets of eight parallel-connected ...

Z-Communications Intros Low Noise X-Band PLO for Test Systems

Z-Communications Intros Low Noise X-Band PLO for Test Systems - RF CafeZ-Communications, Inc., announces a new RoHS compliant fixed frequency phase locked loop model SFS7500D-LF operating in the X-band. The SFS7500D-LF is a plug and play PLO allowing for quick integration and designed to produce a fixed signal at 7500 MHz when utilized with an external 10 MHz reference oscillator. This simple to use PLO features a typical low phase noise performance of -80 dBc/Hz, -95 dBc/Hz, and -124 dBc/Hz at the 1 kHz, 10 kHz and 100 kHz offsets, respectively. The SFS7500D-LF is designed to deliver a nominal output power of -3 dBm while operating off a VCO voltage supply of 5 Vdc and drawing 120 mA. This unmatched product features a typical harmonic suppression ...

Editorial Comment on Grounding, March 9th "The Wireless World"

Editorial Comment, March 9th The Wireless World Article - RF CafeAs radio equipment builders and operators, we still battle two fundamental issues that have been around since the beginning of time (well, from Marconi's time, anyway) - grounding and power supply fluxuations. Both topics are addressed briefly here in this editorial column from a 1932 The Wireless World magazine. Back in the day, grounding was referred to as "earthing," and was/is essential to optimal wireless and wired performance. Line voltage fluxuations are generally much less severe today than in the 1930s thanks to better transformers, automated monitoring and adjusting of line voltages, and better distribution designs. The worst type of power line fluxuation - a lightning-induced surge - has been greatly reduced thanks to superior engineering, primarily by the simple running of a grounded neutral "static" wire running at the top of all the lines below it on utility poles and transmission towers ...

Broadband Conicals with Current Rating up to 10 A at OFC

Gowanda Broadband Conicals with Current Rating up to 10 Amps to Launch at OFC - RF CafeGowanda Electronics, a designer and manufacturer of precision electronic components for broadband radio frequency and power applications, announces the introduction of new broadband microwave RF conical inductors that provide DC current handling up to 10 Amps - the highest level in the industry - and low insertion loss. The four new series - C305FL, C550FL, C750FL and C1000FL - expand Gowanda's conical offerings and will be featured at the 2019 Optical Networking and Communication Conference & Exhibition (OFC) being held in San Diego, California from March 5 to 7. Visit Gowanda Components Group booth #5417 for more information ...

China Stumbles on Path to Solar Thermal Supremacy

China Stumbles on Path to Solar Thermal Supremacy - RF Cafe"A crash plan to scale up solar thermal power generation struggles amidst overly-ambitious timing and market uncertainty. In the final days of 2018 a 100-megawatt solar thermal generating station capable of running around-the-clock, 365-days-a-year connected to the Northwest China regional power grid. It was a race against time to commission the plant in temperatures as low as −20C - and one that plant designer and builder Beijing Shouhang Resources Saving Co could not afford to lose. 'We must finish on time. Otherwise we may face a heavy financial problem,' says Chen Han, Shouhang's director for international markets ..."

Copper Mountain Technologies: Vector Network Analyzers

Copper Mountain TechnologiesCopper Mountain Technologies develops innovative and robust RF test and measurement solutions for engineers all over the world. Copper Mountain's extensive line of unique form factor Vector Network Analyzers include an RF measurement module and a software application which runs on any Windows PC, laptop or tablet, connecting to the measurement hardware via USB interface. The result is a lower cost, faster, more effective test process that fits into the modern workspace in lab, production, field and secure testing environments ...

Sunday 3

RF Cafe Engineering & Science Crossword Puzzle for March 3

RF Cafe Engineering & Science Crossword Puzzle March 3, 2019Beginning in 2000, I have created hundreds of custom electronics-themed crossword puzzles for the brain-exercising benefit and pleasure of RF Cafe visitors who are fellow cruciverbalists. The jury is out on whether or not this type of mental challenge helps keep your gray matter from atrophying in old age, but it certainly helps maintain your vocabulary and cognitive skills at all ages. A database of thousands of words has been built up over the years and contains only clues and terms associated with engineering, science, physical, astronomy, mathematics, chemistry, etc. You will never find a word taxing your knowledge of a numbnut soap opera star or the name of some obscure village in the Andes mountains. You might, however, encounter the name of a movie start like Hedy Lamarr or a geographical location like Tunguska, Russia, for reasons which, if you don't already know, might surprise you ...

Anatech Electronics RF Microwave Filters - RF Cafe

About RF Cafe

Kirt Blattenberger - RF Cafe Webmaster

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 tying up your telephone line, and a nice lady's voice announced "You've Got Mail" when a new message arrived...

Copyright  1996 - 2026

All trademarks, copyrights, patents, and other rights of ownership to images and text used on the RF Cafe website are hereby acknowledged.

All trademarks, copyrights, patents, and other rights of ownership to images and text used on the RF Cafe website are hereby acknowledged.

My Hobby Website: AirplanesAndRockets.com

My Daughter's Website: EquineKingdom

Amplifier Solutions Corporation (ASC) - RF Cafe

Axiom Test Equipment - RF Cafe

Temwell Filters