engineering-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 ...
ConductRF introduces custom Multi-Port RF Solutions
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
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
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
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
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 ..."
Microwave has a complete line of precision
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 knows ..."
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 ...
The free 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
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
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 ...
is a fast growing fabless semiconductor company looking for an ambitious, conscientious,
and thorough Test
Engineer 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 ...
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
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 ...
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
tone 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 quality ..."
Stories 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
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
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 ...
"Quantum 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 mechanics,
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 ..."
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.
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 needs
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
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 ..."