crossword puzzle, as is the case every week, contains only words pertaining to science, engineering,
amateur radio, physics, mechanics, mathematics, etc. Making a special appearance is the name of the
most recent company to support RF Cafe through advertising. You will see their banner graphical ad appearing
in the right page border sometime this week ...
ConductRF introduces custom Multi-Port RF Solutions using the
Mil D38999 Standards
for applications across both military and commercial markets from DC to 60 GHz. The D38999 standards
provide a huge commonly available Multi-Port configuration range which ConductRF uses to enhance with
both Mil Standard and precision RF solutions. With significant high frequency capabilities and its state
of the art phase matching techniques, ConductRF provides support that includes state of the art phase ...
"Leveraging the so-called wetting transparency of graphene, a
team of researchers at the Massachusetts Institute of Technology (MIT) has taken a novel approach to
semiconductor epitaxial growth, one that would leave the original
substrate wafer intact and re-usable for the repetitive growth of new devices, indefinitely.
To achieve defect-free crystalline semiconductor materials on a substrate, epitaxial growth requires
a good lattice matching between the substrate material and the new semiconductor layers being grown
(for the elaboration of electronic devices ..."
Albert Michelson is a name known to anyone who has taken
(and paid attention during) a course in physics for his being the first
person to accurately measure the speed of light in air. Born in 1852 to Jewish parents in Poland, his
family emigrated to America in 1855 initially settling in Virginia City, Nevada. That happens to be
where the fictional TV family of the Cartwrights owned their sprawling Ponderosa ranch in the series
Bonanza. Screenwriters for the show took a bit of historical liberty in depicting young Michelson
as having attending primary school in ...
BBTLine offers a unique patented
combiner / splitter design that allows for more
compact devices while maintaining low insertion loss, excellent return loss and excellent amplitude/phase
balance. These are not standard Wilkinson-style RF splitters. 2- and 4-way, broadband 0.5 - 6 GHz, low loss (0.7 dB @ 6 GHz), excellent amplitude / θ balance
(±0.1 dB, ±1°), high power (20 W as splitter), surface mount & connectorized Purchase directly
from the BBTLine website or use our
Amazon.com storefront. Please visit BBTLine today to see how they can help with
your project ...
"Imagine this, your doctor waves a hand-held scanner over your
body and gets detailed, high-resolution images of your internal organs and tissues. Using the same device,
the physician then sends gigabytes of data instantly to a remote server and just as rapidly receives
information to make a diagnosis. Integrated circuit researchers at the U. of California, Irvine have
created a silicon microchip-based component that could make this a reality. Known as a 'radiator,' the
tiny gadget emits
millimeter-wave signals in the G band (110 to 300 GHz). Waves of this frequency
easily penetrate solid ..."
"In a recent discovery, researchers have found that
black phosphorus could possibly replace silicon as the primary material for electronics.
The research team from Yale University, led by Fengnian Xia, Yale's Barton L. Weller Associate Professor
in Engineering and Science, states how the long forgotten element could play a crucial role in the future
of electronic and optoelectronic devices. With silicon as a semiconductor, the quest for ever-smaller
electronic devices could soon reach its limit. However ..."
has a complete line of precision RF & microwave components including attenuators, terminations, resistors, and
diode detectors for commercial, military, and space applications. Products range from the small flange
type to large 2,000 watt connectorized power attenuators and/or terminations at frequencies up to 26.5 GHz.
In-house photo etch and laser trim capability. Please check out Res-Net Microwave's website to
see how they can help with your current project ...
"5G technologies are early in their development, and the business
cases for them are a bit fuzzy, but wireless researchers and executives still had plenty to celebrate
this week at the annual
Brooklyn 5G Summit. They've made steady progress on defining future 5G networks,
and have sped up the schedule for the first phase of standards-based 5G deployments. Now, the world
is just three years away (or two, depending on who you ask) from its first 5G commercial service. Amid
the jubilance, reality is also starting to set in. While attendees can agree that 5G networks will incorporate
many new technologies—including millimeter waves, massive MIMO, small cells, and beamforming—no one
When I first started working as an electrician apprentice in
the summer of 1974 as part of my high school vocational program, ground fault interrupter (GFI) receptacles
and circuit breakers were not mandated by the National Electric Code (NEC). It was only a little more
than a decade earlier that UC Berkeley professor Charles Dalziel invented the GFI circuit while researching
the effects of electrical current on humans (electrocution). By the late 1970s, shortly before I enlisted
in the USAF to begin ...
whitepapers, pamphlets, books, magazines, and chapter examples listed here are a small sample of a lot
of new items that are offered for FREE through
TradePub. The publishers make them available to qualifying people as a promotional
campaign for their full line of offerings. Note: I earn a few pennies (literally)
when you download one of these or the many other pubs available, so please help yourself ...
Planar Monolithic Industries (PMI) recently introduced three
new products in their extensive line of RF and microwave components. One is the
35 dB low noise amplifier (LNA) covering 0.5 to 2.5 GHz. Another is a
32 dB 10-bit programmable attenuator (DTA) for frequency range of 14.0 to 40.0 GHz, and another
is a 2-18 GHz 8-Bit, vector phase shifter (VPS) ...
"Despite graphene's amazing properties and all the engineering
that has gone into giving the wonder material a band gap, its prospects for digital logic remain as
much in doubt as they have ever been. But the list of uses for
graphene in electronics outside of digital logic continues to grow. The latest comes
from research out of MIT in which graphene could make the use of exotic semiconductors more accessible
to industries by preparing semiconductor thin films without the high cost of using bulk wafers ..."
"In February 2014, the FBI charged a Florida man, Marc Heera,
with selling a
cloned version of the Hondata s300, a plug-in module for the engine computer that
reads data from sensors in Honda cars and automatically adjusts the air-fuel mixture, idle speed, and
other factors to improve performance. The plug-in also allows users to monitor the engine via Bluetooth
and make their own adjustments. The clones certainly looked like the genuine product, but in fact they
contained circuit boards that had likely been built in China, according to designs Heera had obtained
through reverse ..."
Hugo Gernsback, born in Luxembourg, made his fame and fortune
in America as a serial electronics magazine publisher, science fiction author, inventor, and visionary.
Radio Craft magazine, in which this editorial was printed, began in 1929 on the heels of Radio News,
which began in 1919 and ran through 1959. Hugo Gernsback had a huge influence on the direction of communications
electronics, and his opinions were widely sought. As has been the case since governments first regulated
services and manufacturing, there was in the middle of the last century a debate over whether electronics
servicemen should be required ...
Anokiwave is a fast growing
fabless semiconductor company looking for an ambitious, conscientious, and thorough
to join the Anokiwave team. The ideal candidate
should possess a strong working knowledge of mmW measurements, calibration methodologies, semiconductor
probing, and python script language. You will play an instrumental role in the growth and excellence
of Anokiwave and our commitment to satisfying our customers. The successful candidate should demonstrate
proven capabilities in the following ...
is a start-up company determined to create a superior "MarketPlace
for Test Equipment." Inventory is built by a
community of engineers, technicians,
students, and hobbyists looking to Buy, Sell, and Trade all types of test and laboratory equipment and
accessories. Your participation is key to our success. This is a great opportunity to acquire test equipment
at bargain prices ...
The TTRM1008D GaAs amplifier operates at a frequency range of 4400 MHz to 5000 MHz and
has a power output of 25 Watts, while still maintaining a compact form factor of 5.63 x 6.13 x 0.69
inches. This unit also features internal protection against over/under voltage and excessive temperature
conditions, which coupled with its rugged construction, ensure fault-free operation in even the most
extreme environments. RF Systems Ships Dual Channel C-Band ...
"Next-generation train-to-train wireless communications service
is being given the chance to prove itself in South Korea thanks to a collaboration between SK Telecom
and Samsung. The new LTE-R service was launched along the 41km-long Busan Metro line 1 that covers 40
stations. It replaced an existing analogue wireless system for the Busan Transportation Corporation
(BTS), indicating how overdue the new technology is. LTE-R needs to combine capacity, security, reliability
and low-latency – many of the characteristics that will be ..."
"Use it up... Wear it out... Make it do... Or do without" - what
a great slogan! It was coined by the War Advertising Council during World War II to promote the
dual need to conserve scarce resources and to help keep prices down by not generating excess demand.
Most of us have seen videos or read articles about neighborhood materials collection efforts to round
up old tires, scrap metal, glass, tools, electronics equipment, cloth and clothing, and many other items
that could be ...
Nova Microwave is
a leader in technically differentiated electronic and radio frequency Ferrite
Circulators and Isolators that connect, protect
and control critical commercial and military wireless telecommunications systems. Our staff is dedicated
to research and development of standard and custom design quality Ferrite Circulators and Isolators
from 380 MHz to 26.5 GHz. Please visit Nova Microwave today ...
Declaring any kind of straight LC tank circuit to be high stability
is a bit of a stretch when compared the Q available simply by adding a crystal, even in 1958. Tone modulation
was an early method for achieving remote control of model airplanes, boats, and cars. The number of
channels with these
modulation systems is two times the number of modern proportional systems in that moving the rudder
left took one channel and moving it right took another. Up and down elevator likewise took two channels.
Therefore, this four channel system is only two channels by today's terminology. Technology evolved
into fully proportional ...
Copper Mountain Technologies has published a whitepaper titled,
"What Makes a Good VNA?" CMT manufactures Vector Network Analyzers with a USB interface.
"Everyone knows that a good VNA should have both excellent hardware performance and an easy to use software
interface with useful post-processing capabilities. But there are numerous VNAs in the market with different
performance levels; some of them are economy grade, and others are truly laboratory test grade. So what ..."
Saelig Company has introduced the
Siglent SDS1202X-E 200MHz Digital Oscilloscope with improved Super Phosphor Technology
at a remarkably affordable price. With a real-time sampling rate of 1 GSa/s, this new 200 MHz
scope features waveform capture rates of up to 100,000 wfms/s in normal mode and 400,000 wfms/s
in sequence mode. The SDS1202X-E has a waveform record memory of up to 14 Mpoints, and a 256-level
color and intensity grading and color temperature display. Together, these technologies have been collectively
dubbed by the manufacturer ...
Tektronix has published a whitepaper titled "Radar Signal Generation with a High-Performance AWG" that is available as a free
download. "Generating radar signals is one of the most challenging tasks for a signal generator. The
signals' combination of carrier frequency, modulation bandwidth, and, in most cases, their pulsed nature
creates a series of requirements difficult to match with existing instrumentation. The increasing complexity
of radar systems, the growing use of complex modulation techniques such as OFDM or UWB, and the signal
of interviewees being asked to solve engineering problems - basically working for free - have been around
for a long time. Dilbert comic strips have been drawn about it.
Job search forums have posts by people
telling of ridiculous and/or insulting treatment. Fortunately, at least in the engineering world, those
instances are relatively few and far between. This first article this month address the issue. The others
cover both employers and employees - and prospective employees. I try to weed out the ones written by
people who do nothing but give regurgitated advice to others without actually ...
"Laser weapons have
been one of the most important topics of discussion in the Pentagon at least for the past five years,
and several weapons programs involving
lasers are in advanced development. There's the U.S. Navy's shipboard Laser Weapon System (LaWS)
which was deployed for operational tests aboard the amphibious transport dock USS Ponce. Then there's
the Boeing truck-mounted High Energy Laser Mobile Demonstrator (HEL MD) for use against air and ground
targets. One of the most important potential future ..."
This 1956-vintage article by techno-kidder Carl Kohler taught
me a new word - 'darb,' as in "Isn't that a darb, now." According to Merriam-Webster, a darb is a slang
term for something superlative. Mr. Kohler penned many tongue-in-cheek stories for Popular Electronics
in the 1950s and 1960s, all of them based on his antics involving the latest electronics gadget and
Mrs. Kohler's reaction to them. Maybe they are real (in this case, 'reel') and maybe not, but regardless,
they are funny and even if made up, could easily be actual experiences. A list of other Kohler ...
Anatech Electronics, a
manufacturer of RF and microwave filters, has published its April newsletter. As always, it includes
both company news and some tidbits about relevant industry happenings. In it, Sam Benzacar discusses,
among other topics, the court battle battle between AT&T and Rivada Mercury Networks regarding the
National Public Safety Broadband Network administered by FirstNet, build-out of IoT services, and Google
fiber. Anatech's business is to make certain that system and circuit designers have capable filters
available to assure successful ...
interference involving three photons has been measured by two independent teams of physicists. Seeing
the effect requires the ability to deliver three indistinguishable photons to the same place at the
same time and also to ensure that much more common single-photon and two-photon interference effects
are eliminated from the measurements. As well as providing deep insights into the fundamentals of quantum
3-photon interference could also be used in quantum cryptography ..."
"For decades, military aircraft have relied on
electronic warfare (EW) solutions to protect assets and dominate airspace. The ability
of the United States to detect and track aircraft, or avoid detection has played a major role in its
ability to project power globally and maintain freedom of operation in the air. Today, that dominance
is being challenged given the rapid advancements in, and widespread availability of, technology for
adversaries. In order to make the best use of finite resources, EW ..."
tech-themed crossword puzzle,
as is the case every week, contains only words pertaining to science, engineering, amateur radio, physics,
mechanics, mathematics, etc. Making a special appearance is the name of the most recent company to support
RF Cafe through advertising. You will see their banner graphical ad appearing in the right page border
sometime this week. Enjoy ...
Federal Custom Cable is your direct source for
RF & microwave and contract manufacturing (CM), cable prepping,
kitting, labeling, rack & panel, modular assemblies, delay lines,
inductors and toroids, semi rigid, stripping and bending, custom molding, Ø-matched,
power and multi-conductor and shielded cables. Please contact Federal Custom Cable today for your project
Here for radio hobbyists are a dozen handy-dandy 'kinks,' otherwise
known as tricks, shortcuts, or clever ideas, that could prove useful while working in the lab at work
or in your shop at home. One kink that might be worth trying calls for immersing an aluminum panel in
a water-lye solution to achieve "a professional-looking finish." A satin look results. A Google search
on etching aluminum turns up many other methods. Admittedly, most of these ideas would not ...
Empire of the
Air: The Men Who Made Radio is a quite interesting documentary about the struggle that Edwin H. Armstrong
- inventor of the superregenerative and superheterodyne circuits, and of wideband frequency modulation
(FM) - had with Lee DeForest - inventor of the Audio amplifying tube - and David Sarnoff - CEO of Radio
Corporation of America (RCA). Extensive legal battles ensued between Armstrong and DeForest over vacuum
tube patents, and Sarnoff's transition from biggest cheerleader to biggest thwarter of Armstrong's efforts
are epic. A huge amount of historical information and vintage film clips
"A novel technology that embeds highly conductive nanostructure
nanofiber has now been developed by researchers. The novel composite so produced has superb charge
conductivity, and can therefore be widely applied, especially in environmental arena. A research team
led by Prof. Wallace Leung develops novel semiconductor nanotubes with superb charge conductivity which
can be widely used in different applications, especially in environmental arena ..."
BBTLine LLC (Broadband Transmission Line)
has introduced a unique patented design which allows for more compact devices while maintaining low
insertion loss (higher RF power handling... > 20 watts as a splitter),
excellent return loss and excellent amplitude and phase balance. Although there are endless
RF power splitters / combiners to choose from
on the market, once you start narrowing the search criteria down to 1) Broadband, 2) Surface Mount,
and 3) Higher RF Power Rating characteristics, the number of choices is reduced considerably. BBTLine's
line of surface-mount ...
"Scientists sounded the alarm Tuesday
over the problems posed to space missions from
orbital junk - the accumulating debris from mankind's six-decade exploration of
the cosmos. In less than a quarter of a century, the number of orbiting fragments large enough to destroy
a spacecraft has more than doubled, a conference in Germany heard. And the estimated tally of tiny objects
- which can harm or degrade spacecraft in the event of a collision, and are hard to track - is now around
150 million. - We are very ..."