NASA's Jet Propulsion Laboratory issued the following
notice from their NASA Spinoff Database:
Power Amplifiers Boost Radar, Communications, Defense Systems. As a subcontractor
under an SBIR contract from the Jet Propulsion Laboratory,
Inc. of Torrance, California, developed a solid-state power amplifier of unprecedented
efficiency. While most comparable devices lose 20% of their amplified energy when their
signals recombine, QuinStar's lose 8%. The solid-state technology ...
You will probably chuckle at the sight of the printed
circuit board being an example used in an article about
high density PCB production. However, in 1969 it was heralded as leading edge technology.
Remember, though, that surface mount components the size of a grain of salt were unheard
of so such a board probably represents a bunch of leaded components being closely packed
together with the biggest concern for density being heating / cooling issues. Part of
the big deal with this board, when you read the article, is that it is one of eight that
were produced on the same substrate and then singulated ...
Call me nuts, but I have always loved a white
Christmas. That's why most of my life has been spent in northern climes. Judging by the
heap on the bird feeder, about 6-8" has fallen so far, and then there's another 6-8"
due by tomorrow evening. The pic is from a
Wansview 720p webcam (~$40, free access from
anywhere) looking out my front window. There's one in the basement, too, for monitoring
the homestead when gone. I installed a couple of these webcams at my daughter's house,
too - very simple to set up. Now we can see her North Carolina horse farm goings on anytime.
"Ideas alone have little worth. The value of an
invention lies in its practical implementation." -
Werner von Siemens, 1865. The unit of electrical conductance is named
"The Department of Defense spent $7.4B in fiscal
year 2017 on cloud computing, big data and artificial intelligence technologies, according
to a recent report by public-sector contracting analytics firm Govini. That represents
32% increase since 2012, with more specific technologies like quantum
computing, virtual reality and machine learning seeing some of the bigger boosts in investment.
While cloud, AI and big data all saw spending jump over the past five years, AI accounted
for the bulk of the increase in spending ..."
"A new device could open new avenues for the generation
high-frequency radiation with applications in science, radar, communications,
security and medical imaging. Ever since the discovery of X-rays in 1895, their ability
to reveal things hidden to the human eye has created endless opportunities. But X-rays
by far aren't the only option to see the world with different eyes. Researchers hope
to make better use of a different form of light, called terahertz radiation ..."
An article titled,
"Identifying and Isolating
Signals Using Radio Frequency Photonics," appeared in the December 2017 issue of
Aerospace & Defense Technology magazine. I have not delved much into RF
photonics, but evidently the science is gaining popularity, especially as communications
shifts to higher and higher frequencies. "Review of Radio Frequency
Photonics Basics," also authored by Preetpaul Devgan, contains a lot of good info ...
QuinStar Technology designs and manufactures
mm-wave products for communication, scientific, and test applications along with providing
microelectronic assembly, rapid prototyping, and mass customization. Amplifiers, Oscillators,
Switches, Attenuators, Circulators, Isolators, Filters, Waveguide, Antennas, Phase Shifters,
Transceivers, Mixers, Detectors. QuinStar specializes in cryogenic
amplifiers, circulators, and isolators. Please visit QuinStar today to see how they can
help your project ...
At least 10 clues in this puzzle with an asterisk
(*) are pulled from this past week's (12/4 - 12/8) "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 related
to engineering, science, mathematics, chemistry, physics, astronomy ...
"Two satellite beams (or more) are better than
one when it comes to data transfer and anti-jamming measures between satellites and drones.
At least that's what last month's first successful test of beam-switching technology
on an MQ-9 Predator drone seemed to show. Over the course of the testing, the drone flew
1,075 nautical miles and was able to switch smoothly between two
spot beams multiple times throughout the trial. While traditional
wide-beam satellites use one beam to cover thousands of miles, the satellites ..."
"Chip makers appreciate what most consumers never
knew: silicon's virtues include the fact that it 'rusts' in a way that insulates its tiny circuitry. Two new ultrathin
materials share that trait and outdo silicon in other ways that make them promising materials
for electronics of the future. Facebook Twitter Email By Andrew Myers The next generation
of feature-filled and energy-efficient electronics will require computer chips just a
few atoms thick. For all its positive attributes, trusty ...
Other than today's QST magazine being
a larger format and being printed in full color, there is not much difference fundamentally
between the amount of Christmas-themed company advertisements now and half a century
ago. Those from the last century were more likely to incorporate a religious message
in addition to or instead of a secular message to their customers.
Terminal Radio Corporation was located in midtown Manhattan. Google Maps can find
West 45th Street and it can find Cortlandt Street, but they evidently no ...
"A lot of people think that
high-energy lasers, or HELs, can't penetrate fog, rain and dust,
said Thomas Webber, director of the Directed Energy Division's Technical Center, U.S.
Army Space and Missile Defense Command. That's just plain wrong. The key to making HELs
work in poor atmospheric conditions is something called "adaptive optics," he said, adding
that the Army is continuing to make more and more improvements on its adaptive optics
Mankind has been fascinated with -and scared of
- lightning since the dawn of civilization. It's incredible power has been the cause
of much destruction and loss of life. Benjamin Franklin famously proved that lightning
is in fact a form of
electrostatic discharge. He exploited that knowledge to invent grounded lightning
rods for tall buildings, thereby nearly totally halting the lightning-caused fire epidemic
in Philadelphia and other cities. Much investigation and implementation of lightning
discharge mitigation schemes has occurred to safeguard against catastrophic events. Ultimately,
though, says author David Heiserman, 'Lightning has ..."
in operation: The compact WiFi AP in the study integrates WiDeo's motion tracing functionality,
and can reconstruct the hand movement made by humans in the living room. WiDeo traces
motion even though the AP is separated by a wall and does not have a LOS path to the
humans, and doesn't require that the humans have any RF devices on them. WiDeo has broad
applications such as security, navigation, search and rescue, and people monitoring ..."
You'll appreciate the
that appeared on page 59 of the February 1969 issue of Electronics World magazine.
It is consistent with the prevailing theme of the era where wives and girlfriends were
fairly oblivious to the meaning of technical endeavors of their husbands and boyfriends,
respectively (or not necessarily). The other comic from that edition is reflective of
the times as well, when a television was considered to be one of the essentials of modern
life. I was a pretty rotten kid, but I don't remember ever running away ...
Much has been learned and published about the
various layers of the
ionosphere since its first being measured with sounding rockets in the 1950s. Both
professional and amateur communications operators are very interested in its properties.
Long term (seasonal) and short term (daily) patterns have been discerned that help make
some of the ionosphere's effect on the propagation of electromagnetic (radio) signals
somewhat predictable, but there are still many unpredictable events that hamper - and
often enhance - communications. Sun spots and coronal mass ejections, volcanic eruptions,
hurricanes, and other natural events cause sporadic ...
Broadcom Eyes Replacing Qualcomm's Board, Turning Takeover Hostile
Discovery Sets New World Standard in Nano Generators
WISPA Keeps Argument Alive for Not Changing CBRS Rules
Trump Directs NASA to Return to the Moon, Then Aim for Mars
Former NASA Administrator to Head DOD Tech Research
Calls for Sub-$1 IoT Sensor
Broad 3Q 2017 Electronics Supply Chain Growth – Globally and in Europe
DoE Identifies Material as Fastest Solid-State Conductor for Magnesium
Croatia Confirms New 60-M Allocation, Expanded 160-M Privileges
Supreme Court Considers Cellphones and Digital Privacy
Ofcom Tells BT to Speed up Investment in Full Fibre
When I saw this story, I was reminded of a tongue-in-cheek
article titled, "The Zero Displacement Engine" in one of my model airplane magazines.
The ZPRR is no joke, though. "Sandia has developed a miniature, zero-power radio receiver
that can be easily integrated in a wide range of devices to provide continuous wireless
connectivity. The underlying principle behind the
Zero-Power Receiver is that the powered radio frequency electronics
that are used in most wireless receivers can be replaced with electronics that require
no power supply or battery. Using this technology, a short range radio receiver (<100 m)
can be ..."
"The U.S. Air Force Research Laboratory - Sensors
Directorate (AFRL RY) has developed a high isolation
RF circulator which provides enhanced detection ranges (radar) and
improved reception (communications) by reduction of signal leakage and undesirable internal
reflections between ports, at a tuned frequency (or frequency range) of interest. Isolation
values exceeding 70 dB have been demonstrated which far exceeds the 20 dB typical
to conventional 3-port circulators. The AFRL circulator ..."
I love this quote by UK engineer James Newman:
"I just got suckered into it bit by bit." This story about Mr. Newman's effort to build
a 16-bit computer using discrete components appeared in Popular Science magazine.
Newman wanted to create a functional, programmable computer that would provide a visual
indication of how data flow and computation occurs within a microprocessor; the result
is his "Megaprocessor." To do that, he constructed this 10-meter-long by
2-meter-tall rack of circuits consisting of more than 40,000 discrete transistors. An
Intel 8086 microprocessor has ~29,000 ...
"Scientists at the Department of Energy's SLAC
National Accelerator Laboratory and Stanford University have shown that
copper-based superconductors, or cuprates - the first class of materials
found to carry electricity with no loss at relatively high temperatures - contain fluctuating
stripes of electron charge and spin that meander like rivulets over rough ground. The
stripes are zones where electrons either pile up, creating bands of negative charge,
or align their spins to create bands of magnetism. They were previously known to exist
in cuprate superconductors at temperatures ..."
The agenda has been finalized and registration
opened for the combined 2017
AWR Design Forum (ADF) Germany and German User Group meeting, taking place in Munich
on December 12. ADF brings the latest NI AWR software solutions to customers, partners
and engineering professionals throughout the world, enabling them to learn, network and
collaborate on today's microwave/RF design challenges. Select presentation highlights
include: Complete X-Band 2x2 Phased-Array Antenna Design and Simulation, Including Low-Temperature ...
Anatech Electronics, Inc. offers the industry's
largest portfolio of high-performance standard and customized
microwave filters and filter-related products for military, commercial, aerospace
and defense, and industrial applications up to 40 GHz. Anatech has introduced three
new filters for your convenience: a 4432 MHz WiFi cavity filter with N connectors, a
899-944 MHz LC duplexer filter with N connectors (std), and WiFi cavity bandpass filter
with SMA connectors (std) ...
I have always been obsessed with
Christmas - from being a little kid and loving the decorations (and, of course, presents)
to being a father and providing the season's festive rites for my kids, to now as an
old guy. Our house still has a fresh cut Christmas tree with shiny balls (including ones
with family member names written with glue and glitter) and hand-crafted figures and
of course metalized icicles, lights outside along the roof line (old-fashioned incandescent,
of course), decorations hanging around inside, Christmas cards from years past when people
actually mailed them (we still mail a few), and other holiday memorabilia. You will ...