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Today in Science History

New Chinese Zhou Enlai Student Satellite Set to Launch

New Chinese Zhou Enlai Student Satellite Set to Launch - RF Cafe"The 2U Zhou Enlai CubeSat, developed with primary and middle school students in China, is expected to launch on January 19. The satellite is named after the first Premier of the People’s Republic of China, who held office from 1949 until 1976. A report on the official Xinhua Net website said the CubeSat, constructed at Huai'an Youth Comprehensive Development Base in Jiangsu Province, has been transported to Jiuquan Satellite Launch Center, where a CZ-11 solid-fuel rocket will put it into orbit Friday. 'Twenty teenagers who participated in the development project ..."

Tesla 'on Autopilot' Slams into Parked Fire Truck on California Freeway

Tesla 'on Autopilot' Slams into Parked Fire Truck on California Freeway - RF Cafe"A Tesla Model S reportedly on 'Autopilot' smashed into the back of a fire truck parked at a freeway accident scene Monday morning, authorities said. The union representing Culver City firefighters whose truck was hit around 8:30 a.m. on Interstate 405 in Culver City tweeted that the Tesla driver said he had been using Tesla's Autopilot system, which performs automated driving tasks. The CHP and Culver City Fire Department confirmed the southbound Tesla had struck the fire truck, but could not immediately ...

Atomic Radiation: Detection Methods

Atomic Radiation: Detection Methods, June 1969 Electronics World - RF CafeThis is Part 2 of a 3-part series of articles on atomic radiation that appeared in Electronics World magazine in 1969. The first part, which dealt with various types of radiation and how they interacted with matter, was posted a week or so ago. For instance ionizing versus nonionizing radiation, where the former can cause cancer, the latter just burns you. This installment discuses methods and equipment for detecting and measuring radiation levels. Ionizing radiation detectors rely on having massive particles impinge on gas, solid, or liquid media and causing a reaction that is visible or measurable by electronic means. Nowadays there are highly ...

RF Cafe Quiz #68: RF & Analog Company Mergers & Acquisitions in 2017

RF Cafe Quiz #68: RF & Analog Company Mergers & Acquisitions in 2017This quiz tests your awareness of the many mergers and acquisitions that occurred in the RF, microwave, and analog electronics industries during 2017. Mr. Raghav Kapur, of the everythingRF website, compiled a good list of events with a short description of the transactions, so I used it to generate this 10-question quiz. It was made using Google Docs. Winners receive a free subscription to the RF Cafe website for a full month. Good luck ...

RF Cafe Engineering Crossword Puzzle w/Weekly Headlines: January 21

RF Cafe Engineering Crossword Puzzle w/Weekly Headlines January 21, 2018At least 10 clues with an asterisk (*) in this technology-themed crossword puzzle are pulled from this past week's (1/15 - 1/19) "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, etc. Enjoy! ...

A Major Step Forward in Organic Electronics

Major Step Forward in Organic Electronics - RF Cafe"Researchers have developed the world's first complementary electrochemical logic circuits that can function stably for long periods in water. This is a highly significant breakthrough in the development of bioelectronics. The first printable organic electrochemical transistors were presented by researchers at LiU as early as 2002, and research since then has progressed rapidly. Several organic electronic components, such as light-emitting diodes and electrochromic displays, are already commercially available. The dominating material used until now has been PEDOT:PSS, which ..."

Peregrine Semiconductor Is Now pSemi

Peregrine Semiconductor Is Now pSemi - RF CafeIt is with immense pride and excitement that I write to inform you of the next chapter for Peregrine Semiconductor and Murata. Effective today, 17 January 2018, Peregrine will operate under a new name, pSemi Corporation. pSemi will have the same experienced leadership team, but we will have a broader scope and an expanded product portfolio. When Murata acquired Peregrine in Deceember 2014, they kept the Peregrine brand name untouched. In the last few years, Murata has asked our team to extend our reach, increase our intellectual property ...

Gyroscopes Lead Scientists to Unusual State of Matter

Gyroscopes Lead Scientists to Unusual State of Matter in Disorganized Structure - RF Cafe"You don't have to be perfectly organized to pull off a wave, according to scientists. Using a set of gyroscopes linked together, physicists explored the behavior of a material whose structure is arranged randomly, instead of an orderly lattice. They found they could set off one-way ripples around the edges, much like spectators in a sports arena - a 'topological wave,' characteristic of a particularly unusual state of matter. Using a set of gyroscopes linked together, physicists explored the behavior of a material whose structure is arranged randomly, instead of an orderly lattice. They found they could set off one-way ..."

Bombshell: The Hedy Lamarr Story

Bombshell: The Hedy Lamarr Story - RF Cafe Video for EngineersBy now, most people involved with spread spectrum communications are (or should be) aware that Hollywood starlet Hedy Lamarr is credited for being the first to suggest a frequency hopping scheme for secure communications. If you do a Google search on Hedy Lamarr and spread spectrum, you see that except for a few mentions on tech websites, it has only been in the news since the end of the last decade. Scientific American magazine ran an article titled, "Hedy Lamarr: Not Just a Pretty Face," in 2008. Google honored her in 2015 with a Doodle on their homepage. "The most beautiful woman in the world," with the assistance of her co-inventor-composer George Antheil ...

Pasternack's Quick Connect Attenuators w/QMA, QN and 4.3-10

Pasternack Debuts Quick Connect Attenuators with QMA, QN and 4.3-10 Connectorized Designs - RF CafePasternack has released a new line of attenuators for quick mating and easy installation. Typical applications include DAS systems, remote radio heads (RRHs), base stations and antennas. Pasternack's 23 new quick connect attenuators are available with QMA, QN or 4.3-10 connectors for easy mating. These attenuators support operating frequency ranges from DC to 6 GHz. They boast attenuation values from 0 to 20 dB and VSWR as low as 1.15:1. The 4.3-10 attenuator models have power handling up to 15 W maximum with low-PIM ...

Silicon Valley Tech Jobs Pay the Highest Salaries

Silicon Valley Tech Jobs Pay the Highest Salaries - RF Cafe"Indeed.com just released its 2017 Silicon Valley salary survey, looking at which tech jobs command the highest average pay over the past year, according to job openings posted on the job search firm’s web site from November 2016 through October 2017. Product development engineer claimed the number one spot, with an average salary of US $173,570, and director of product management was just a few dollars behind, with an average salary of $173,556. Meanwhile, dev ops manager, machine learning ..."

Triad RF Systems Intros TA1056 20 to 1,000 MHz, 40 W GaN PA

Triad RF Systems Intros TA1056 20 to 1,000 MHz, 40 W GaN Power Amplifier - RF CafeTriad RF has introduced the TA1056, a compact and powerful broadband power amplifier designed for use with JTRS Military Radio Communications, as well as any other applications that require operation over a broad spectrum. This amplifier boasts 40W of output power for long range communication capability. This class AB GaN module is designed for both military and commercial applications. It is capable of supporting any signal type and modulation format, including but not limited to 3 - 4G telecom, WLAN ...

Get Your Free FCC Tumbler with Qualifying Order

Federal Custom Cable Free Yeti Tumbler - RF CafeFederal Custom Cable (FCC)is offering a free Yeti tumbler with a purchase of $100 or more. FCC boasts over 200,000 custom cable assemblies1,000s of coax adapters & connectors, 100s of attenuators & terminations, and over 150,000 non-existent & hard to find adapters. BTW, in case you don't know, Yeti is a big name in insulated cups and containers. Our local Field & Stream store has one sitting on the counter with hours-old ice cubes in it to demo its ability. Come for the cables, leave with the Yeti Tumbler ...

Integrating AlGaAs Transistor and III-V Laser on Silicon

Integrating Indium Gallium Arsenide Transistor and III-V Laser on Silicon - RF Cafe"Researchers based in Singapore and the USA have integrated indium gallium arsenide (InGaAs) transistors with aluminum gallium arsenide (AlGaAs) laser diodes (LDs) using molecular beam epitaxy (MBE) on silicon substrates. The team from National University of Singapore, the Singapore-MIT Alliance for Research and Technology-Low Energy Electronic Systems, Nanyang Technological University in Singapore and Massachusetts Institute of Technology (MIT) in the USA are working towards low-cost, low-power, high-speed optoelectronic ..."

ConductRF D38999 Standard & Custom RF Solutions

ConductRF D38999 RF Coaxial Cable Solutions - RF CafeConductRF presents a wide selection of standard D38999 RF coaxial cable configurations. Off the shelf examples include: BMA to 20 GHz, SMPM to 60 GHz, Size #8 to 18 GHz, Size #12 Mil-Spec. Size #16 Mil-Spec. Cable choice include Low Loss Flexible and standard RG styles. Custom marking and also ruggedization coverings including Nomex weave available. Contact ConductRF today. Available for direct purchase through Newark Electronics ...

Effective Radiated Power

Effective Radiated Power, May 1973 Popular Electronics - RF CafeEIRP - effective isotropic radiated power - is an important parameter when calculating both intentional and unintentional electromagnetic emissions. EIRP is a vector quantity that accounts for both power (magnitude) and 3-dimensional coordinates (direction). It includes antenna directivity that concentrates power in a particular direction rather than distributing it equally in all directions (e.g., isotropically). Effective radiated power factors in modulation type and power envelope shape as well. Knowing how to measure that quantities can make the difference between ...

Tech Industry Headlines

Tech Industry Headlines - RF Cafe- Archive -

FCC Cites Auto Dealership for Cell Phone Interference

Army Upgrades Ground-Penetrating Radar for IEDs

China to Install >120,000 Public EV Charging Piles by 2020

Qualcomm NXP Deal Approved by EU and Korea

Ericsson Introduces Radio Dot Small Cell for Indoor 5G

Apple Says $350B in Business Spending to Boost U.S. Economy

U.S. Manufacturing Output Rose in December for 4th Month

Permanent WSPR Beacon in Antarctica Now on the Air

Broadcom Under Investigation by FTC

How Technology Is Changing the Manufacturing Workforce

Analog Devices Intros Active Mixer w/7 GHz Bandwidth & 20 dBm OIP3

Analog Devices Intros Low Power Active Mixer with 7 GHz Bandwidth & 20 dBm OIP3 - RF CafeAnalog Devices announces the LTC5562, a low power, high performance active double-balanced mixer, capable of 50 Ω matching over a very wide frequency range of 30 MHz to 7 GHz. This versatile mixer can be used in either frequency upconversion or downconversion applications, with outstanding conversion gain of 2 dB. The device runs on a single 3.3 V supply rail, drawing 40mA nominal operating current. If lower power consumption is needed, the mixer can be configured to operate as low as 15 mA, supporting a wide ...

Crystal Filters

Crystal Filters, April 1969 Electronics World - RF CafeAs with most technologies that have been around for decades, the fundamentals of crystal filters have not changed with time. Materials and methods have changed, of course, but the equivalent lumped element model (using resistors, capacitors and inductors) of a crystal filter is essentially the same today as it was in 1969 when this article appeared in Electronics World magazine. Open a first semester electronics circuits textbook and the chapter on crystals will look much like this piece by Mr. Robert Kent, of Damon Engineering. The use of crystal had a profound impact on filter design because their extremely high "Q" factors ...

Radiocrafts Intros Sigfox Module with Integrated Sensor Interfaces

Radiocrafts Intros Sigfox Module with Integrated Sensor Interfaces - RF CafeRadiocrafts AS, a leading provider of RF modules and wireless connectivity solutions, announced today two new Sigfox modules, both with integrated sensor interfaces. The new modules are ideal for making a Low Power Wide Area Network (LPWAN) with wireless sensors. The proven Sigfox modem is complemented by a dedicated interface for a number of industrial and environmental sensors. The sensors are carefully selected to enable customers to build complete sensor nodes by just adding the sensor, an antenna ...

2018 IEEE Summit on Communications Futures

2018 IEEE Summit on Communications Futures - RF CafeLive Streaming Starts: 1:30 pm EST. "The 2018 IEEE Summit on Communications Futures will be streamed live throughout the day on January 19, 2018 from Honolulu, Hawaii. You'll be able to view presentations from our impressive list of speakers as they occur for absolutely free-- from the convenience of your home or office! The program will feature this impressive group of top leaders and innovators as they share their insights on the future of communications technologies related to 5G, Advanced Optical ..."

Please Welcome Lotus Systems as a New Sponsor!

Please Welcome Lotus Systems as a New Sponsor!Lotus Systems is a supplier of high performance RF modular system components operating up to 20 GHz. Design, manufacture, and test is controlled from from their Middlesex, MA, facility. Lotus offers connectorized modules for amplifiers, attenuators, bias-Ts, filters, prescalers, multipliers, oscillators, limiters, and RF cases for your custom designs. A rugged lab-quality baseplate for mounting is available. Lotus can provide custom extension of standard products, custom designs for specific applications and prototyping for your new products. Please visit Lotus Systems today to see how they might help you ...

Atomic Dynamics of Everlasting Electric Fields

Atomic Dynamics of Everlasting Electric Fields - RF Cafe"Scientists from Duke University and Oak Ridge National Laboratory have collaborated on a project that seeks to determine the atomic mechanisms of a very rare type of electric field. Everlasting electric fields have not been well-researched at this point, but the findings in this new project are an impressive step forward. Researchers hope to develop new materials that have similar properties, which could be used in a variety of applications. Scientists uncovered the atomic properties by ricocheting neutrons off the atoms of yttrium manganite. The material was heated to 3,000° Fahrenheit ..."

Author: Kirt Blattenberger on Google+ Author:
Kirt Blattenberger