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3 of the September 2016 homepage archives.
What Can Stop a Bad Guy (or 3) with a Gun?
This video is going viral. Three thugs bust into a house with guns drawn and move like a SWAT team.
The lady living there comes out firing and the trio of heroes scatter like cockroaches when a light
is turned on. One runs right through a glass door pane as he flees. What would likely have happened
to the woman if she hadn't taken control? Death? Rape? Mortal wound? "When seconds count, the cops are
just minutes away."
Chinese Radar Capable of Detecting 'Invisible' Targets 100 km
Away
This is amazing! "A
top Chinese military technology company shocked physicists around the world this week when it announced
it had developed a new form of radar able to detect stealth planes 100km away. The breakthrough relies
on a ghostly phenomenon known as quantum entanglement, which Albert Einstein dubbed 'spooky action at
a distance'. China Electronics Technology Group Corporation said on Sunday that the new radar system's
entangled photons had detected targets 100 km away
..."
Saelig Intros 5-in-1 PC-Hosted Test Scope with Signature Analysis
Saelig Company has introduced the
Syscomp SIG-101 Signature Analyzer
- a PC-based two-channel 200 kHz oscilloscope, sampling at 2MSa/s, that includes an arbitrary waveform
generator, and an 8-bit digital I/O port. Building on the CGR-101, its successful predecessor, the SIG-101
also adds calibrated signature techniques to the oscilloscope waveform display capabilities for quickly
troubleshooting circuit boards. Unlike most PC-based oscilloscopes with 8-bit A/D sampling, the SIG-101
has an 11-bit A/D that gives eight times
...
Voltage-Multiplying Circuits
Voltage
multipliers were found in nearly every form of battery-powered electronics in the days of vacuum
tubes, because of the 100-volt or more requirement for plate voltages. Primary batteries in 30, 45,
and 67½ volt sizes were produced by Eveready, Burgess, and a few other companies in order to
help simplify biasing circuits. They were bulky and heavy, often comprising a significant portion of
the assembly's volume. Heavy transformers contributed mightily to the weight and size as well. Exell
still manufactures 30, 45, and 67½ V
...
TV Energy Efficiency Ratings 'Flawed'
This story is reminiscent
of the VW EPA scandal. My 2008
model Sharp 26" LCD, is rated at 120 W. Here is a table of
power usage
for various TV sizes and display types. "The Natural Resources Defense Council (NRDC) said many sets
were designed to perform well in government tests, but used more energy in regular use. It said energy
consumption could be twice the expected amount. But the U.S. Consumer Technology Association said modern
TVs were an 'efficiency success story.' The NRDC said it found many television sets disabled energy
saving features ..."
Anatech Electronics Intros 3 New Filter Designs
Anatech Electronics offers the industry's
largest portfolio of high-performance standard and customized RF and microwave filters and filter-related
products for military, commercial, aerospace and defense, and industrial applications up to 40 GHz.
Anatech has introduced 3 new
filter designs:
a 32 MHz IF SAW filter in an SMD package, a 564 MHz cavity bandpass filter with N connectors,
and a 417 / 427 MHz ceramic duplexer in an SMD package
...
Work Experience for Students Essential Say Engineering Employers
"62% of
engineering employers say graduates don't have the right skills for today's workplace,
while 68% are concerned that the education system will struggle to keep up with the skills required
for technological change, according to the 2016 Skills and Demand in Industry report, published by the
Institution of Engineering and Technology today. To address these growing concerns over skills
..."
Water-Powered Cubesat Satellite Shoots for the Moon
"A cereal box-size satellite, fueled by
water power, is in the running for the first tiny satellite to orbit the moon. A
Cornell University student team called the Cislunar Explorers is developing the little orbiter as part
of NASA's Cube Quest Challenge, which is offering $5.5 million in total to teams that build small satellites
known as cubesats. Cislunar means 'between Earth and the moon,' which is exactly where the winning
..."
Antenova's Beltii Antenna for Small PCBs in GNSS Devices at 1559-1609 MHz
"Antenova
Ltd, manufacturer of antennas and RF antenna modules for M2M and the Internet of Things, is announcing
Beltii, (P/N SR4G013), a brand new embedded antenna
which measures only 15.6mm x 3.3mm x 4.4mm, and operates with all global public satellite constellations.
The antenna has been cleverly designed to work over a very small ground plane on a small PCB, where
it can be placed in a corner position, and does not need any ground
..."
EE Times Silicon 60: 2016's Emerging Companies to Watch
"It has been a year since
EE Times produced a version16.1 of the
Silicon 60. Over that time while the global economic situation can - at best - be
said to have stabilized the semiconductor and electronics industries are on the edge of 'great expectations.'
There seems no doubt that the Internet of Things will have a revolutionary impact on how people can
live their lives, but exactly how that will manifest itself
..."
Crosley Model AC-7 & Atwater Kent Model 30 Radio Service Data Sheets
Have you ever heard of a Mershon condenser? Me neither, but this
Crosley Model AC-7
radio used one (or more). Ohio State University alums are familiar with
the name Mershon, if not the man.
Ralph Mershon was,
among other things, an early manufacturer of electrolytic capacitors. This 1930 service sheet for a
Crosley radio mentions the propensity of Mershon capacitors to experience breakdown of the electrolyte
when the radio is not used for many months. Rejuvenation is necessary via a prescribed procedure to
ensure ...
"The Institute for Quantum Computing at the University of Waterloo
set a world record for creating a Canadian flag measuring about one one-hundredth the width of a human
hair. Guinness World Records granted the inaugural award for smallest national flag to
the Institute for Quantum Computing (IQC) at Waterloo for the flag measuring
1.178 micrometres in length. It is invisible without the aid of an
..."
Notable Tech Quote: Simon Segars
"The ability to code
is now as important as grammar and mathematics skills and it can unlock important new career options.
I can easily imagine a new wave of design entrepreneurs looking back and citing today as the day their
passion for technology began." -
Simon Segars, CEO of ARM
On the Road to 5G, Advances in Enabling Technology
This
online webinar will be broadcast on September 28, at 8am PT/ 11am ET. Sponsored by Rogers Corporation,
presented by Art Aguayo. "Consumption of mobile data continues to grow at a rate exceeding 50% annually
through 2020. In order to support this growth,
mobile networks are going through evolutionary and revolutionary changes. We are
all well aware of the evolutionary changes in the networks, 3G to 4G (FDD-LTE
and TD-LTE) and how implementation of additional frequency bands, small cells,
..."
"Real 5G" Will Broadcast Above 6 GHz
"Brace
yourself - the debate over what should and shouldn't count as 5G has only begun. Defining the next generation
of wireless networks is complicated, partly because engineers are developing so many exciting technologies
at once and have yet to agree on the standards by which they will operate. Stéphane Téral, an analyst
at IHS Markit, recently weighed in by criticizing the use of '5G' to describe
sub-6 GHz developments in
..."
Withwave Intros 3.5 mm Compact Calibration Kit
Withwave's
Compact Calibration Kits offer
excellent performance characteristics for fine-tuning in production environments and quality testing
facilities, using 50 ohm N-type & 3.5 mm connectors up to 6 GHz and 9 GHz respectively. These Cal
Kits include all needed calibration standards (Open, Short, Load, and Through)
in one unit. It is the best solution available for ease of use in VNA calibration, especially in the
field. We solve your performance
...
Worldwide AC Voltage & Frequency Standards
Just as it seems
unlikely that the world will anytime soon converge on a single, common language
(Esperanto failed), it is also unlikely that 'last-mile' electrical distribution
systems will agree on a common
voltage and frequency standard.
In both cases, local implementations are so entrenched that a wholesale realignment would be prohibitively
expensive in terms of both resources and finances. The global nature of all aspects of industrial, commercial,
and consumer products has necessitated that accommodation be made for all existing systems, and that
object ...
"Millitech,
a leader in millimeter-wave technology and a brand of Smiths Microwave, announces its high performance
E-Band
Linear-to-Circular Polarizer. Offering a low axial ratio of > 0.6 dB, a low insertion loss of <
0.5 dB, and a typical VSWR of 1.25:1 within the high and low unlicensed communication bands
(71 – 86 GHz), the polarizer can be optimized for any frequency you require
from 18 – 110 GHz and
..."
Triad RF Systems Intros 20-1000 MHz, 20 W Bidirectional Amplifier
Triad RF Systems has introduced the
TTRM1019,
a 20-1000 MHz, 20 W Bidirectional Amplifier (BDA). The TTRM1019 is a broadband bi-directional
low SWAP amplifier utilizing GaN devices. It is well suited for EW / SIGINT applications and also can
be used as a general purpose SSPA for commercial / laboratory use. This class AB GaN module is designed
for both military and commercial applications. It is capable of supporting any signal type and
...
New RF Tuned Materials and Devices
"Materials with large
dielectric constants - aka 'high-K materials' - have recently come in to the spotlight due to their potential
use within future generations of reduced-dimension semiconductor devices. Barium strontium titanate,
one such material, possesses an inherently large dielectric constant that can be altered significantly
by the application of an electrical field. Though this property has been known to exist for more than
half a century and many researchers
..."
"Conquer Radio Frequency" Online Course Is Now Free
This is just a reminder
that Wolfspeed is now sponsoring FREE access to Dr. Francesco Fornetti's masterpiece,
Conquer Radio Frequency
- A Multimedia Conceptual Guide to RF & Microwave Engineering, based on AWR Microwave Office.
The material takes an original approach to explaining the fundamental principles behind the design of
passive and active RF & microwave circuits ...
New Parasitic Beam Design
Something about the moniker "plumber's
delight" for homebuilt antennas always appealed to me. In the early days of radio it referred to
antennas built with threaded galvanized or soldered copper plumbing pipe or threaded black gas pipe.
Today, it also includes structures that incorporate sections of cemented PVC pipe
(with wire elements strung along or within them). A major issue with using
threaded pipe is the potential for passive intermodulation products (PIMs)
being generated at the dissimilar
...
British Startup Raises £750k to Develop Diamond-Based Electronics
"Originally
VC funded with the aim of becoming a device developer using
synthetic diamond, British startup Evince Technology was restructured in 2013 to
focus on IP development. The company has demonstrated proof of concept devices and is currently developing
prototypes of two solid-state devices based on proprietary IP that leverages diamond's unique electronic
..."
R&S Presents Leading-Edge Microwave T&M Solutions at EuMW 2016
From October 4 to 6, 2016,
Rohde & Schwarz will demonstrate its expertise in the field of test and measurement,
including in the highest frequency ranges, at the European Microwave Week (EuMW)
international trade fair in London. The highlights on display in hall S11, booth 3 at ExCel London will
include the following T&M solutions: Radar test solutions, Satellite test solutions, Automotive
test ...
A Few Great RF & Microwave Engineering Articles for September 2016
Many years have passed since I last did a PCB layout. The world
has changed considerably terms of simulation capabilities as nowadays designers often need to perform
carefully modeled electromagnetic and thermal simulations to help assure a first-pass success. Companies
spend big $-¥-€-£-₩-₨-₱-₫ for software licenses in order to reduce
...
How
can this happen? The problem is contractually non-conforming
fuel tank tubing insulation that "is not compatible with fuel." Huh? Of
course we'll never know who the supplier was or where they're located. Government contract assignments
are as subject to political correctness as men being allowed in women's restrooms. We're doomed
...
SemiGen Diodes, Capacitors, Attenuators, Inductors at EDI
CON 2016
"SemiGen
is featuring a range of products at EDI Con 2016 in Boston at booth #505. Limiter, Schottky, step recovery
and point contact diodes. The SLP7100 series limiter diodes feature a low capacitance, resistance and
quick turn on times. These limiters are ideally suited for high-power applications as protection against
unwanted power surges or spikes for low noise components
..."
Harmonic Radiation from External Nonlinear Systems
My introduction to
passive intermodulation (PIM) issues was while working on a BTS switching system back around the
turn of the century (yes, this century), where because of high power levels,
the matrix had to be guaranteed to not generate PIM products greater than a certain value. About 1/3
of the units were not passing test. The cause turned out to be a high power attenuator in one of the
paths. The manufacturer of the attenuator was a very well established and reputable firm. The PIM levels
were intermittent and would come and go after removing
...
Complex Materials Can Self-Organize into Circuits
"Researchers studying the behavior of nanoscale materials at
the Department of Energy's Oak Ridge National Laboratory have uncovered remarkable behavior that could
advance microprocessors beyond today's silicon-based chips. The study, featured on the cover of Advanced
Electronic Materials, shows that a single crystal complex oxide material, when confined to micro- and
nanoscales, can act like a multi-component electrical circuit
..."
TRAK Intros Ruggedized, Tactical GPS Time and Frequency System
Smiths Microwave Subsystems is pleased to announce that TRAK
has released the 8836 series tactical GPS Time and Frequency System. The design approach integrates
a ground-based GPS receiver module (GB-GRAM), a rubidium oscillator, time and frequency signal generation,
and control/status circuitry in a compact, ruggedized enclosure. Standard outputs include 1PPS, low
noise
...
Electronics Technology Crossword Puzzle for September 18, 2016
For the sake of avid cruciverbalists amongst us, each week I create
a new crossword puzzle
that has a theme related to engineering, mathematics, chemistry, physics, and other technical words.
You will never be asked the name of a movie star unless he/she was involved in a technical endeavor (e.g., Hedy Lamar). Enjoy!
...
Seminar: Design and Analysis of Antennas for a Modern Smartwatch
"Wearable electronics poses many challenges for the
antenna design engineer. When designing wearable consumer electronics in particular,
rapidly evolving performance requirements, new usage scenarios and regulatory constraints make the ability
to accurately and efficiently evaluate and consider different design options critical in being competitive.
In this webinar, we will look at some of the challenges facing antenna designers in the design of a
new smartwatch product. The presentation will explore some design examples
..."
Coilcraft Listing Added to Inductor Vendors Page
Coilcraft has been added to the
Inductor Vendors page on RF Cafe. I'm not sure how they got deleted since they were there originally,
but somehow I managed to do it. Apologies to the good folks at Coilcraft.
Coilcraft has been a long-time maker of ceramic
and ferrite chip inductors, air core spring inductors, RF transformers, tunable inductors, broadband
conical inductors, and common mode chokes. Their website includes parametric search tools, SPICE models,
and S-parameters. Designer's Kits and free evaluation samples available
...
The Basic Laws of Human Stupidity
Here is a great
chart for your next informal project status meeting, assuming most people in attendance
lie in the upper right quadrant and are not likely to have their safe spaces violated. It comes from
Carlo Cipolla's book, "The Basic Laws of Human Stupidity."
Quantum Effects Observed in '1-Dimensional' Wires
"Researchers
have observed quantum effects in electrons by squeezing them into one-dimensional 'quantum wires' and observing the interactions between them. The results could be
used to aid in the development of quantum technologies, including quantum computing. Scientists have
controlled electrons by packing them so tightly that they start to display quantum effects, using an
extension of the technology currently used to make computer processors
..."
Skyworks Intros Front-End Module for Smart Energy and IoT Applications
Skyworks has introduced a highly integrated 470 to 510 MHz front-end
module (FEM) that is ideal for smart energy, smart metering (electric, gas, water,
heat), security, RFID, industrial and other Internet of Things (IoT)
applications. The
SKY66115-11
FEM operates over a wide variety of supply voltages at low power consumption, and comes in a small 4
x 4 x 0.9 mm, 16-pin multichip module solution. Its extended
...
The Aircraft-Radio Service Man
As a life-long aircraft enthusiast, my attention is always drawn
to photos, drawings, and titles in articles dealing with any aspect - but particularly a historical
aspect - of aviation. This 1937 edition of Radio-Craft magazine reported on the fledgling field
of aircraft radio maintenance, and in particular the opportunities is presented to radio repairmen.
Aircraft
electronics - avionics - have of course change significantly over the last 80 years. Accordingly,
maintenance has become such a highly specialized skill that other than swapping out entire pieces of
equipment, relatively few facilities exist that are qualified
...
"Boingo Wireless, Microsoft, Broadcom and Ruckus Wireless are
among those calling out Ericsson for a report in which Ericsson shared results of its
LTE-U/Wi-Fi coexistence tests. Not surprisingly, the tests found that LTE-U will
fairly coexist with Wi-Fi. The companies challenged Ericsson's claim that its tests are closely aligned
with the Wi-Fi Alliance
..."
IPP Intros SMD 90° Coupler for 4000-6000 MHz
Innovative Power Products introduces
their latest
90° coupler
that operates over the full 4000 – 6000 MHz band. The new Model
IPP-7133, handles 100 watts
CW and comes in a small SMD Style package which is only 0.20 x 0.56 x 0.10 (W, L, H) inches and available
on tape & reel. The IPP-7133 will combine two signals up to 100 Watts CW of total output power.
This coupler has excellent amplitude balance across the full band and insertion loss of <0.25 dB
...
Army, Korean Engineers Find a Way for Allies to Share Spectrum
"The Pentagon has been developing a number of ways to better
share the limited resources of the electromagnetic spectrum, both with other U.S. military services
and civilian agencies. But considering the number of future missions that are expected to be conducted
with coalition partners,
sharing spectrum with other countries also is important. Researchers from the Army
Communications-Electronics Research, Development and Engineering Center, or CERDEC, and the Korea's
Agency for Defense Development, or ADD
..."
"101 Bets You Will Always Win"
This is legitimate fodder
for RF Cafe because it is science related. In fact, you might use one of these tricks to warm up a lecture
or slide show audience. These nifty challenges are a sample of those presented in psychologist Richard
Wiseman's book
101 Bets You Will Always Win: The Science of the Seemingly Impossible. I've seen
many of them before, but the one about a discharged battery bouncing higher than a charged battery is
a new one for me. I wanted to test it myself, but couldn't find identical charged and discharged batteries
...
Phone-Band Phunnies
Whether
or not this kind of stuff goes on over the Ham bands these days, I couldn't tell you. It is easy to
imagine such obnoxiousness
of some people back in the day. Of course if you assume the way kids are portrayed in contemporary movies
and TV shows is typical, even the aforementioned behavior would seem mild in comparison. Fortunately,
kids today have a plethora of social media venues
...
Engineering Career and Job Hunting Advice for September 2016
Usually, concepts like an infographic
formatted resume seem too gimmicky to be used in a serious job search, but if done well, it can demonstrate
real creativity and outside-the-box thinking. It could be just the thing you need to defeat the rote
processing by HR department drones who are known to run resumes
...
Tuning Materials and Devices to Adapt to Their Environment
"Materials with large dielectric constants - aka "high-K
materials" - have recently garnered attention for their potential use within future generations
of reduced-dimension semiconductor devices. Barium strontium titanate, one such material, possesses
an inherently large dielectric constant that can be altered significantly by an applied electrical field—by
as much as a factor of 10. While this property has been known to exist
..."
Anatech Electronics Newsletter for September 2016
Anatech Electronics, a maker of RF and
microwave filters, has published its August 2016 newsletter. As always, it includes both company news
and some tidbits about relevant industry happenings. This month, Sam Benzacar discusses the topic of
"The Sad State of E911,"
the Fed's pledge of $400M for 5G Research, the FCC's new 3.5 GHz spectrum allocation, and the Apple
Watch possibly getting GPS. Anatech's business is to make certain that system and circuit designers
have capable filters available
...
Insulator vs. Metal Determination
"The electronic energy
states allowed by quantum mechanics determine whether a solid is an
insulator or whether it
conducts electric current as a metal. Researchers at ETH have now theoretically predicted a novel material
whose energy states exhibit a hitherto unknown peculiarity. If one looked deep into three different
solids using a super-microscope, one would, in principle, always see the same thing: atomic nuclei arranged
in a crystal lattice and electrons, of which some orbit the atomic nuclei and others crisscross the
entire crystal lattice ..."
Electrolytic Condenser "Blows Its Top"
Who among us has not purposely hooked up a power supply to an
electrolytic
capacitor and turned up the voltage until it popped? It was a ritual for new guys in the shop. Admittedly,
the ones I've blown up were insignificant compared to the one shown in this photo where the staff at
Daven Labs reproduced a test failure and was sure to be rolling film during the process. Hopefully,
no one was in the room
...
New System Could Break Bottleneck in Microprocessors
"Engineers at North Carolina State University and at Intel have
come up with a solution to one of the modern microprocessor's most persistent problems: communication
between the processor's many cores. Their answer is a dedicated set of logic circuits they call the
Queue Management Device, or QMD. In simulations, integrating the QMD with the processor's
on-chip network, at a minimum, doubled core-to-core communication
..."
Wi-Fi Alliance Assures Coexistence Test Plan on Track for September
21
"Despite naysayers who questioned whether a plan would be ready
this month, the
Wi-Fi Alliance(WFA) reassured attendees at last week's
CTIA Super Mobility 2016 trade show that, indeed, the coexistence Wi-Fi/LTE-U testing plan it's been
developing is expected to be delivered as planned on September 21. The reassurance from the WFA is noteworthy
because some members of the LTE community, many of whom were
..."
Some ABCs of V.H.F. Receiver Design
Author Edward
Tilton discusses here the tradeoff between bandwidth and
sensitivity in receivers,
given that broadband noise power follows bandwidth in a 10 log BW fashion. Pulling in the most distant
stations requires very low noise in able to get the SNR as high as possible, which requires the minimum
bandwidth possible. Prior to highly stable local oscillators, operating successfully in a narrow bandwidth
for voice (phone), and particularly for CW (Morse code), dictated the use of a fixed frequency crystal
to keep from having to constantly re-tune
...
Keysight to Demo RF/uW, Signal/Power Integrity at EDI CON USA 2016
EDI CON USA 2016 brings together RF, microwave, and high-speed
digital design engineers and system integrators for networking, training and learning opportunities.
Attendees will find solutions, products and design ideas that they can put into immediate practice for
today's communication, defense, consumer electronics, aerospace and medical industries.
Keysight (Booth 321) will showcase design, test and service solutions for: mmWave
Communication, EW & Satellite
...
Continental to Upgrade Submarine HF/VLF Communications
"RF
and microwave experts at Continental Electronics Corp. in Dallas will maintain and upgrade electronic
components a U.S. Navy high-power communications system that sends one-way text messages to submerged
nuclear ballistic missile submarine forces. The Navy shore VLF/LF transmitter facilities transmit a
50 baud submarine command and control broadcast which is the backbone of the submarine broadcast system,
Navy officials say. The VLF/LF radio broadcast provides good performance in atmospheric
..."
Würth SMD Designer Kits for Sale
For
Sale: Würth Electronics SMD 0402 Multilayer Ceramic Capacitor Design Kit, SMD Air
Coil Inductor Design Kit, and Power Elements Design Kit. These are the kits - all unused - graciously
provided by Würth for a product review. I have no need for them at this time, so this could be your
lucky day. Full details are available
here. They sell on Digi-Key
for about $110 each, but you can buy all three for a mere
...
Saelig Intros High Performance 30/60 MHz DDS Signal Generators
Saelig
Company has introduced the Siglent
SDG1000X
Series of Function / Arbitrary Waveform Generators which output sine, square, ramp, and pulse waveforms
to 60MHz with a 14-bit sampling rate of 150 MSa/s at up to ±20V. The SDG1000X generators
feature Siglent's patented EasyPulse technology for low jitter and very fast rising and falling edges
that are frequency-independent even at low duty cycle settings. EasyPulse technology results in a much
more versatile generator than
...
Graphene Enables Flat Speakers for Mobile Audio Systems
"Nanomaterials
have been responsible for all sorts of innovation of audio speaker designs. We've seen magnetic nanoparticles
used to eliminate the need for a magnet in speakers.
Carbon nanotubes have also been demonstrated to produce sound with heat. Researchers
at KAIST have developed a new speaker design specifically targeted for the mobile audio market that
draws its capabilities from nanomaterials. The KAIST researchers have used graphene
..."
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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
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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
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