Hittite's GaAs MMIC SP4T
for 23-30 GHz
Microwave, the world class supplier of complete MMIC based solutions
for communication & military markets, has introduced a new reflective,
SP4T switch that is ideal for demanding applications requiring broadband
performance, low insertion loss, fast switching speed and high power
handling capability. The
HMC1084LC4 is a broadband reflective GaAs MESFET SP4T switch
that provides frequency coverage from 23 to 30 GHz, with 11 dB
return loss, 26 dB isolation and 2.8 dB insertion loss
at 30 GHz, and a switching speed of 15 ns.
Radio & Radar Crossword
Puzzle for September
a much-deserved break and work this week's
Radio & Radar themed crossword puzzle. This one won't take
too long. All the words are pulled from a hand-built list of terms,
names, and abbreviations that have only to do with science, mathematics,
and engineering. If you want a crossword with names of movie stars
and obscure countries, try the local newspaper. If you want to exercise
your nerd knowledge, this is the one for you.
NuWaves Receives ISO 9001
and AS9100 Certifications
Engineering, an international Radio Frequency and Embedded Systems
solutions provider, announces it has achieved both
ISO 9001:2008 and AS9100:2009 Rev C certifications for its Quality
Management System by EAGLE Registrations Inc. Its scope includes
research and development as well as design and production of RF
systems and subsystems. "NuWaves is excited to join the top tier
suppliers in our industry with these highly respected quality certifications,"
said Jeff Wells, President and CEO of NuWaves Engineering. "It's
a testament to our employees and their dedication."
PMI Intros Integrated Front-End
Phased Array Radar
Monolithics Industries has introduced PMI Model No. IFE-DRS-KIT,
Integrated Front End (IFE) unit
that consists of a low noise amplifier, RF Log Detector, and a low
noise video amplifier. This integrated unit was designed to
support a phased array radar automated test set. Operational frequency
is in the 9-10 GHz band with an input power level of -40 to
White Paper - Considerations
Technologies has published a white paper titled, "Considerations
for Wireless Range." Author Justin Hopper writes, "One of the
first questions one asks when evaluating a wireless system is 'what
range will it get?' The answer to the wireless range question is
somewhat complicated. The range of a wireless system is dependent
on several interdependent factors. Some are internal to the design
of the product and some are external. There are ways of estimating
the wireless range of a system by taking into account several factors.
The first factors in determining wireless range..."
Engineers and Technicians
electronics career began in the USAF as a radar system maintenance
specialist, where I did not have exposure to engineers except a
rare visit by a communications officer during system certification
tests. Following separation (aka "getting
out"), I went to work as an electronics technician for Westinghouse
at the Oceanic Division in Annapolis, Maryland. It was the first
time I worked alongside engineers. My nature is to be subservient
and respectful toward people put in charge of my activities, whether
at work or otherwise, so I was surprised to witness an
that persisted between engineers and technicians. A minority of
the techs seemed to harbor resentment for the engineers and took
every opportunity to highlight their mistakes, no matter how minor.
Derisive comments were usually reserved for the benefit of co-workers,
not the engineers themselves (backbiting).
I admired most of the engineers enough that it motivated me to spend
many years taking classes part-time to earn my own BSEE degree.
On one occasion a production test technician discovered an incorrect
voltage reference level on a comparator circuit in a very complex
mixed signal circuit...
11th Annual Military Antennas
Antennas East Summit will address the evolving development of
antennas as an ever-critical component of all military communication
capabilities; in doing so, it will delve into the development of
Ground, Air, Sea, and Space-based antennas, along with software
radios, vehicle communications, and SATCOM. It will also uncover
the newest in antenna technology, including small wideband antennas,
metamaterial antennas, GPS programs, superconducting RF systems,
adaptable RF, and more. Washington Plaza Hotel, September 17-18,
UP! - The Real Thing
you read this, veteran North Carolina balloonist
is floating over the Atlantic Ocean somewhere right now in a small
wicker gondola lifted aloft by a cluster of colorful party balloons.
It departed from Maine on Thursday, September 12, 2013. A story
on the ARRL website reports that amateur radio is onboard.
Mr. Trappe is no newcomer to flying in such contraptions. In
2012 he and a specially designed small house used a similar buoyancy
arrangement to float above Mexico. A "toy balloon" flight over the
Alps met with success in September of 2011. Trappe became the only
person to have crossed the English Channel by cluster balloon...
When an Expert's Testimony
ExpertServices periodically sends out e-mails that highlight recent
key court cases that can significantly affect the effectiveness
of expert testimony, both for the plaintiff and for the defendant.
latest case involves an expert who contradicted during oral testimony
what he claimed in his written report. The mistake cost the company
that hired him as an advocate to lose their patent infringement
claim. I'm guessing the company has initiated a new lawsuit based
on the outcome. Attorney Robert Ambrogi weighs in on the situation...
Channel Master Antennas
sure giveaway to the age of a picture is the presence of a wheat
penny, a buffalo nickel, or a Mercury dime. This 1957 advertisement
Channel Master antennas has all three. It shows a walking Liberty
half dollar as well. Quarters haven't changed much over the years,
with George Washington's head on the obverse side since 1932. The
wheat penny design ended in 1959 when the Lincoln Memorial was put
on the reverse side in its place. Thomas Jefferson's head has been
on the nickel since 1938. Theodore Roosevelt's head was ensconced
on the obverse of the dime in 1946. John F. Kennedy was placed on
the half dollar obverse in 1964. This ad is about antennas, not
coins, though. For a lot, if not most, of RF Cafe visitors, there
has always been cable and satellite television. For some, TV has
Please Welcome Nortec RF
As My Newest Advertiser
is an engineering design and manufacturing company specialized in
RF and Microwave products, with more than 22 years of experience
power combiners and dividers,
directional couplers, hybrid couplers, and
filters. Their research and development group and engineering
team constantly introduces new, top of the line products into the
product line. Please visit Nortec RF today and thank them for
helping to deliver RF Cafe.
'Tornado' Banned by U.S.
you know that from 1885 until 1938, prior to the advent of radar,
the U.S. Weather Bureau banned the use of the word 'tornado'
in weather forecasts? According to a story in Spectrum
magazine, the bureau thought the mere mention of the word would
strike fear in people and prevent them from settling in tornado-prone
Midwest and western plains regions. Believe it or not, the decision
was made in part because local business owners complained that customers
stayed home in shelters rather than shopping at their establishments
when a tornado warning was in effect. An early tornado warning system
was devised that was so hokey that it is no surprise it never worked
well enough to be adopted. A single wire with a series current running
through it was strung between all the houses and along a stretch
of land southwest of town (most probable approach direction of tornados).
The current energized a solenoid that held cocked the hammer of
a bell. If a tornado broke the wire anywhere, the bells in all outfitted
homes would strike to warn occupants of immediate danger. I suppose
it was better than nothing, but not very practical or effective,
especially if a stray cow or mischievous kid broke...
Dongjin TI Intros N-Type
Technology Innovation announces the immediate availability of an
Calibration Kit for use with high precision network analyzers
and other test equipment requiring calibrated short, open, or 50 Ω
load. A patented design delivers 10% higher electric performance
at 50% low cost and very fast delivery. Contact Dongjin Technology
Innovations today for details and pricing.
Thanks to Triad RF Systems
and DCH Systems
In case you haven't heard, Triad RF Systems and DCH Systems
have combined forces recently to bring you a powerhouse of amplifier
design expertise. Dean Handrinos and Steve Barthelmes are highly
capable RF amplifier
and system designers who each leveraged expertise gained from
prior industry experience to start their own companies a few years
ago. I didn't ask how Triad RF Systems was chosen as the new name
for their merged companies - maybe it was a coin toss. Very soon
you will see the DCH Systems ads disappear from RF Cafe, but you
can still reach Dean at Triad RF Systems. If you have a chance,
please contact them and wish them good fortune on their new endeavor.
American Astronauts Back
from ISS... Courtesy
36 crew members Chris Cassidy of NASA and Pavel Vinogradov and Alexander
Misurkin of the Russian Federal Space Agency have returned to Earth
from the International Space Station, landing safely in Kazakhstan
at 10:58 p.m. EDT Tuesday. Cassidy, Vinogradov and Misurkin, who
launched to the station March 29, spent 166 days in space. They
completed 2,656 orbits of Earth and traveled more than 70 million
miles. Vinogradov conducted one spacewalk, bringing his career total
to seven spacewalks with an accumulated time of 38 hours, 25 minutes.
Misurkin conducted three spacewalks...
NXP Makes UHF PCB Antenna
Design as Easy
as 1, 2, 3
to embed RFID technology in their products are now able to do so
without needing deep UHF antenna design experience thanks to NXP
Semiconductors' new online software tool. The
RFID – PCB Antenna Designer tool helps implement antennas on
a PCB in the UHF frequency range (840-960 MHz). UHF antenna
design is more complex than a typical HF antenna design and needs
an expert understanding of the electronic design constraints. With
the RFID – PCB Antenna Designers can simply input parameters, such
as space available on the PCB, target performance, board materials,
and target frequency range in the region of application to receive
a turnkey UHF antenna design for their specific application.
So This Is What Darkness
Al Qaeda attack on the power grid was my first thought on this eve
of the 9-11 anniversary. When we arrived at Erie's World of Music
at 7:00 PM for Melanie to take her music lesson, we were greeted
by employees telling us all lessons were cancelled due to a
The lights were on when we left home 15 minutes earlier, and were
still on when we got back. Isn't it odd how a music school can't
function these days without power because most of the instruments
use electricity? The acoustic guitars have electronic pick-ups now
just like classic electric guitars, pianos are synthesized keyboards,
and even the drum sets are electronic look-alikes. Having it that
way facilitates keeping noise levels down during the dozen or more
instruction sessions happening at any given time. It can get pretty
loud in the WoM basement even with volumes turned down...
Z-Comm Intros Fixed Freq.
Synth with Ultra
Low Φ Noise
Inc. announces a new RoHS compliant Fixed Frequency Synthesizer
SFS10000C-LF in X-band. The SFS10000C-LF is a single frequency
synthesizer that operates at 10 GHz and features a typical phase
noise of -100 dBc/Hz @ 10 KHz offset and typical sideband spurs
of -70 dBc over the temperature range of -40º to 85º C.. The SFS10000C-LF
is designed to deliver a typical output power of 0 dBm with a VCO
voltage supply of 5 Vdc Typical 2nd harmonic suppression of -30
dBc. SFS10000C-LF is an excellent choice for broadband transmission
and fixed wireless applications.
September 11, 2001
3,000 Souls Lost
years ago on this date Americans had their worlds turned upside-down
with the news of hijacked airliners crashing into the two World
Trade Center towers, the Pentagon, and a field in Shanksville, Pennsylvania.
For a myriad of reasons ranging from political correctness to incompetence,
the many indicators of such an attack being perpetrated were ignored.
Then, as now, news agencies and government offices refuse to identify
the terrorists as extremist Muslims. As you remember that horrific
day, keep in mind all of the American and ally servicemen who have
died or have been gravely wounded in following years, and think
of the multitude of freedoms you have lost since then...
Hittite Intros2 W GaAs pHEMT
Covers 15 to 20 GHz
Microwave has launched a new power amplifier which maintains excellent
performance over its operating frequency range. The
HMC6981LS6 is ideal for high linearity point-to-point and point-to-multi-point
radios, SATCOM, military and space applications. The HMC6981LS6
is a four-stage GaAs pHEMT MMIC power amplifier which operates between
15 to 20 GHz. Ideal for covering the 18 GHz licensed
microwave radio band, the amplifier provides 26 dB of gain,
+34.5 dBm of saturated output power, and 25% PAE from a +6 V
supply. Up to +43.5 dBm OIP3 and drawing only 1100 mA from
a +6 V supply.
Modern Radio Practice
in Using Graphs and
always had a problem with book and article titles containing the
word 'Modern' because it is utterly ambiguous. What was modern in
1932 is usually obsolete merely a decade later, especially in high
technology (not so much in buggy whip state-of-the-art
methods, though). Sometimes, as with this article on
insulation breakdown voltages, bringing the information up to
date requires only the substitution of a few words. For instance,
replace 'condenser' with 'capacitor' and units of 'mfd' with 'μF'
and 'mmfd' with 'pF,' then you'll be on your way to gaining useful
information. There is a nice nomograph for use in designing capacitors
for specific voltage handling and a table of dielectric puncturing
voltages as well.
Dongjin TI Intros Composite
DIN 7/16 Connector
Technology Innovation announces the immediate availability of very
7/16 connectors. The body material is a composite plastic black
with silver-plated bronze contacts, as opposed to a standard brass
body and beryllium-copper (Be-Cu) contacts.
This newly developed 7/16 connector is seeing a steep increase in
use in leading countries like Japan, Germany, and the USA.
RF Cafe Featured Book
Antennas: Understanding Practical Antennas and Design, by Joel
R. Hallas (QST's "The Doctor Is In" columnist).
Basic Antennas is a comprehensive introduction to antennas--basic
concepts, practical designs, and details of easy-to-build antennas.
You'll learn how to make antennas that really work! This book will
provide a foundation in antenna theory and design necessary for
anyone undertaking more advanced topics such as those presented
in The ARRL Antenna Book. Includes: Dipole Antennas, Antenna Impedance,
Transmission Lines, Practical Two Element Arrays, Wideband and Multiband
Antennas Reflector Antennas, Yagis for HF and VHF, Loop Antennas,
Antennas for Microwave Applications, Vehicle Antennas, Antenna Measurements,
Plus, an Introduction to Antenna Modeling...and much more!
Modern Vacuum Tubes
is no secret that I have a soft spot in my heart for vintage electronic
equipment, particularly vacuum
tube radios. Believe it or not, you can even today buy a new
radio with tubes, but the tubes will only be in the speaker driver
circuit. The front-end tuner circuitry will be solid state. That's
OK, because you still get a "real" orange glow from the tubes. If
you really want a nostalgic experience, you will need to procure
an authentic vintage radio. Until about a decade ago, you used to
be able to jokingly say that you have a computer or a television
that still uses vacuum tube technology. Now that there are virtually
no CRT computer monitors or TV screens in service
(in 1st-world countries, anyway), you
can't get away with it. Bummer. I suppose someday when holographic
or direct neural imaging is commonplace, late-adopter types
(like me) will joke about our computers
and TVs still having physical displays. On of the few remaining
realms for vacuum tubes is high power transmitters used in radio
and television broadcasting. It is evidently still cheaper and easier
to build a tube...
JFW Intros Two Mini-Benchtop
Industries, Inc. is pleased to announce two new additions to our
series of mini-benchtop, programmable attenuator assemblies.
50BA-011-95 offers 0-95 dB of attenuation in 1 dB
steps from 200-6000 MHz, while the
50BA-010-127 gives 0-127 dB and operates 700-3000 MHz. Other
configurations are also available. The mini benchtop models are
JFW’s latest line of attenuator assemblies. These units are DC powered
using a wall transformer that is shipped with each unit. The attenuation
of each variable attenuator is displayed on the front panel. Controlled
remotely or manually.
Many Thanks to Dow-Key
for Continued Support
Microwave Corporation is the world's largest manufacturer of
RF switches. They are AS9100/ISO-9001 certified and committed
to providing unparalleled customer service, competitive pricing,
on-time delivery and switch products that are distinguished by quality
and reliability. Dow-Key offers the largest switch product line
in the world with over 10,000 unique configurations.
Student's Radio Physics
Course - Series &
everyone who visits websites like RF Cafe are seasoned electronics
veterans. While you and I can do series and parallel circuit analysis
(and series/parallel for that matter, possibly
using Fourier or La Place transforms for reactive AC circuits)
in our sleep, many are recently getting into the wonderful world
of electronics who are just coming of age or have suddenly at a
later point in life developed a passion for the craft. Accordingly,
this article from Radio News provides yet another tutorial on the
series and parallel circuit analysis. Only resistors and basic
Ohms law are covered.
Please Welcome LadyBug
As My Newest Advertiser!
in 2005, LadyBug Technologies manufactures the PowerSensor™ line
USB RF &
microwave power sensors. LadyBug manufactures high accuracy
average, pulse, and pulse profiling sensors with GUI interfaces
covering up to 26.5 GHz and 80 dB dynamic range. These
sensors set a, patented industry standard, No Zero / No Cal
technology. There is no need to disconnect or wait for internal
zeroing and calibration prior to making accurate low power measurements.
Driver support is provided.
Please Visit Cobham Antennas
Antenna Systems, formerly European Antennas, has been a long-time
advertiser on RF Cafe. Cobham specializes in the design and development
of high gain,
circuit antenna arrays,
wide-band directional antennas, multi-octave bicones and high
gain collinear omni-directional antennas. They have a large catalogue
of antenna designs. Specialist development projects from 250 MHz
to 40 GHz. Communication industry awareness and expertise in
antenna physics ensure customer satisfaction is their forte.
Notable Tech Quote
you've got someone who's good in an emergency, get rid of him or
you'll always have emergencies." Anon - old engineering saying per
Sherlock Ohms author Rod Hine.
Crossword for 9/8/2013
a much-deserved break and work this week's
Microwave Engineering themed crossword puzzle. All the words
are pulled from a hand-built list of terms, names, and abbreviations
that have only to do with science, mathematics, and engineering.
If you want a crossword with names of movie stars and obscure countries,
try the local newspaper. If you want to exercise your nerd knowledge,
this is the one for you.
Simplifying Signal Analysis
in Modern Radar
to Rohde & Schwarz, a leading manufacturer of RF & microwave
test equipment, for allowing this reprint for their "Simplifying
Signal Analysis in Modern Radar Tests" article that appeared
in Microwave Journal's August 2013 edition of Military
Microwaves publication. The R&S
FSW-K6 Signal and Spectrum Analyzer is used to make measurements
and for screen shots. "The evaluation of direct digital synthesis
(DDS)-based radar systems is challenging
for traditional signal analysis test techniques. This is especially
true when it comes to pulse compression analysis, pulse trend analysis
over time and frequency agility verification. The test tools used
to simplify the testing of modern radar systems are evolving, like
the systems they must test. This article focuses on the evolution
of spectrum analyzers from relatively basic instruments used for
measuring traditional pulsed signals to the advanced test system
architectures required for signal analysis of leading-edge radars.
Sophisticated, next-generation radar systems benefit from advances
in digital technology and computational power. The trend is toward
the use of DDS to enable powerful wideband waveform..."
Advanced Test Equipment
Rentals - Thanks!
once again to Advanced Test Equipment Rentals for supporting RF
Cafe through continued advertising. Please consider their services
when looking for test equipment. ATER (aka
ATEC) provides the latest models of
test and measurement
equipment from top name manufacturers like Agilent, Fluke, Anritsu,
R&S, Tektronix, and Yokogawa. Their primary focus is providing
a complete rental solution of test and measurement equipment to
industries such as Aerospace, Defense, EMC, and Communications.
500 W HPA in 3U Chassis Only
RF Systems continues to leverage next generation hardware and software
architecture and is proud to introduce the next series of the "size
matters" portfolio -
500 W in
3U chassis. This new PA family operates in the frequency ranges
of 20 - 500 MHz (Model 2173),
500 - 1000 MHz (Model 2174) and
20 - 1000 MHz (Model 2175) with
the output power guaranteed over full bandwidth and temperature.
You won’t find another HPA alternative in the marketplace that rivals
our unique combination of package, size, weight and power, not to
mention, an inventory program from a global distributor Richardson
Explain Radio Fading
to the Public
is a great primer for anyone looking for an easily understandable
way to explain the basics of
radio signal fading to acquaintances, or for that matter to
understand it yourself if you don't already. As I review the material
for taking my amateur radio General Class exam, there is information
about atmospheric absorption in the various ionospheric layers during
daytime and nighttime. Prior to studying the manual, I either never
knew or once knew but have forgotten about the upper F1 and F2 layers
combining into a single layer at night when the sun's radiation
and particle bombardment is blocked by the earth. This article doesn't
go that deep into the physics, but it does a good job of making
a complex topic simple enough...
has been in the news lately for having sold its cellphone line to
Microsoft for $7.2 billion (US). Was
it a good move? At least immediately, it depends on whether you
owned Microsoft stock or Nokia stock. Responding to the news, Microsoft's stock
shed $1.52 (-4.6%) to close Tuesday
at $31.88. Nokia's shares surged $1.22
(+31%), to finish at $5.12. Microsoft's
Windows Phone operating system has been in Nokia phones since 2011.
Nokia was knocked from its #1 rank pedestal a couple years ago and
is currently in the #2 slot, with Apple following, then China's
ZTE. Nokia's debut in the cellphone realm was in 1992 with the Mobira
Senator. It wasn't quite a bag phone, but...
Thanks to Res-Net Microwave
over 25 years Res-Net Microwave has manufactured precision
RF & microwave attenuators, terminations, and other components,
and now diode detectors for commercial, military, and space applications.
Res-Net Microwave is a leader in the development and production
of the metal films required for these types of RF/microwave attenuators,
terminations, and resistors up to 2 kW. Now offering 4-week lead
times on standard products including: attenuators, resistors, and
A Question About
Transmission Line Impedance
See answer submitted by
RF Cafe visitor L. Joseph wrote to request
that the following question be posted in hope that someone will
provide an answer. If you care to reply, please either e-mail your
answer to me so I can post it, or reply on LinkedIn.
the question I am trying to get an answer for: Let us take a 100 ohm
termination in a 50 ohm system and add a
transmission line of 0.2 lambda (0.2λ) length. At the end
of this 0.2 lambda line I will get an impedance corresponding
to some VSWR1. Then, I change the termination from 100 ohms
to 75 ohms and at the end of the 0.2 lambda line VSWR2
will be VSWR2 = VSWR1/(100/75) = VSWR1/1.33.
Will the same rule apply..."
Kete Microwave Intros
Two New Step Attenuators
Microwave Company announces two new additions to their line of
RF variable/step attenuators. Both models are panel mountable
and have SMA connectors. Part number DRA2-2.7-30-SMAF
(left) is a Dual Rotary Attenuator
with an attenuation range of 0-30 dB from DC-2.7 GHz with
a VSWR of 1.30:1 to 1.40:1. Part number SRA2-2.2-10-SMAF
(right) is a Single Rotary Attenuator
with an attenuation range of 0-10 dB from DC-2.2 GHz .
Both units handle up to 2 W at an operating temperature range
from -55°C to +85°C.
RF engineer Joe Cahak, owner of Sunshine Design Engineering Services,
has written a series of white papers on S-parameters. This third
installment is titled, "Measurements
with Scattering Parameters." "In many RF and Microwave measurements
the S-Parameters are typically expressed in dB
(decibels) Magnitude units and Degrees
in the polar coordinate system. Network and Vector Network Analyzers
and Spectrum Analyzers all measure with voltage ratio measurements,
so to convert to dB in terms of volts we must use the following
Not All Common Currents
is an interesting short article on the EDN website. Author Eric
Bogatin, who has written books such as
Signal and Power Integrity - Simplified, asserts that
common [mode] currents (he detests the 'mode'
term), while not desirable, are not always a matter of concern.
"Generally, if the return path of the common current is far from
the signal path, then these common currents will radiate. These
are bad common currents. But if you can engineer the return path
of the common current to be in proximity to the source current,
the loop area will be small and he common current will not radiate."
"Not all common currents are bad. Give microstrip traces a break."
e-Cards with a Mission
Press was a department manager at RFMD during my 6½ years there
as an RF Applications Engineer. While he and I only worked together
a couple times, we did manage to hold a few memorable discussions
- usually on holidays when most normal people had taken the day
off - on a broad range of social, economic, and national defense
topics. None of humanity's problems were ever solved as a result
of our dialogs, but I did come to have a great respect for Mike's
worldview as what I deem a classical Liberal. By that I mean one
whose focus is on compassion for his fellow man and truly wanting
to foster unity, as opposed to many modern Liberals who seem angrily
intolerant and want to destroy anyone that disagrees with any of
their positions. Yes, some Conservatives are regrettably that way
Congrats to August Book
Drawing Winner Steve
month I select someone to receive a
from those provided by Artech House and Cambridge University Press.
They are often books I have used to create
quizzes. How to enter? Either buy one of my inexpensive
offerings or send me an e-mail. This month's winner, Steve L., selected
High-Frequency Integrated Circuits
(Cambridge University Press), by Rosin
Voinigescu. "A transistor-level, design-intensive overview of high
speed and high frequency monolithic integrated circuits for wireless
and broadband systems from 2-200 GHz, this comprehensive text
covers high-speed, RF, mm-wave, and optical fibre circuits using
nanoscale CMOS, SiGe BiCMOS, and III-V technologies..."
Skyworks Intros FEM for WiFi
Solutions unveils a highly integrated,
5 GHz front-end module for wireless connectivity, Bluetooth
and mobile applications that exceeds 802.11n system requirements.
The SKY65535-11 integrates a power amplifier, a low noise amplifier
with bypass, and a single-pole-double-throw, transmit/receive switch
in a 16-pin, 2.5 x 2.5 mm, quad-flat-no-lead package.
Because the solution provides a direct connection to the battery
with a 3.6 V nominal supply voltage that removes the need for
regulators and associated components, the module reduces the overall
bill of material costs and space requirements on the circuit board. An
integrated power detector with 20 dB of dynamic range that
delivers closed-loop power control within the system.
Featured Book of the Week
Mixer Technology, by Bert Henderson and Edmar Camargo,
is published by Cambridge University Press. Although microwave mixers
play a critical role in wireless communication and other microwave
applications employing frequency conversion circuits, engineers
find that most books on this subject emphasize theoretical aspects,
rather than practical applications. That's about to change with
the forthcoming release of Microwave Mixer Technology and Applications.
Based on a review of over one thousand patents on mixers and frequency
conversion, authors Bert Henderson and Edmar Camargo have written
a comprehensive book for mixer designers who want solid ideas for
solving their own design challenges.
Dongjin TI Intros High
Technology Innovation announces the immediate availability of very
connectors. Industry standard connector types have useful frequencies
extended from the typical 11 GHz up to 18 GHz using proprietary
constructions such as soldered shield connections for better isolation
and higher pull-off force. Contact Donjin Technology Innovations
today for details and pricing.
Please Visit Windfreak in
Windfreak Technology designs, manufactures, tests and sells high
value radio frequency products such as
Generators, RF Synthesizers, RF Power Detectors, RF Mixers, RF Upconverters
and RF downconverters. They develop high quality, reliable,
low cost products to make your life easier. Windfreak Tech is developing
high quality, low cost products to make life easier for RF Engineers
and hobbyist. Future products will be more synthesizers, transmitters,
receivers and test equipment. All at low cost.
fool with a tool is still a fool." - Anon. This comment was left
by a website visitor in response to the news story about a
drone operator who ran his craft into a groom's head while filming
a wedding video.
Fundamentals of Color TV
was a multi-part series published by Radio & Television
News in the days when
color TV was the domain of the more well-to-do folks on the
block. Needless to say, nobody I knew had color TV before abound
1968. One of my friend's father owned a fairly profitable gas station
and service garage, so they were the first to have one. For some
inexplicable reason, his mother never allowed more than one or two
of us into the house at a time, so we drew straws to see who got
to witness that fabled miracle of technology. I was about third
in line. Insomuch as the 1960s were a much more polite and private
time than the present, peeking through a living room window for
a preview was expressly verboten. In fact, going into a friend's
house for any reason was rare. The privileged appointments were
strictly adhered to...
Free White Papers
folks at Rev Response have a pretty big collection of white papers
on a very wide range of subjects that are free for downloading.
Well, not quite free - they do require you to sign in, but no $$$
is involved. I make a few pennies on each download, so you're helping
to support RF Cafe if you participate. Here are a few of the newer
ones that might interest you:
Cut That Cord! How to
Windows 8 Keyboard
Shortcuts Cheat Sheet
Aerospace Industry Takes
a Fresh Look at Its Wire
Harness Design Approach
Critical Success Factors for
Consumer Electronics &
Appliance Companies to
Meet Today's Top 3 Issues
Top 5 Tips for Choosing
7 Steps for Using Twitter
for Small Business
Photoshop CS6 Unlocked:
101 Tips, & Tricks -Free 61
RF Engineering Crossword
for September 1,
a break and work this week's
RF Engineering themed crossword puzzle. All the words are pulled
from a hand-built list of terms, names, and abbreviations that have
only to do with science, mathematics, and engineering. If you want
a crossword with names of movie stars and obscure countries, try
the local newspaper. If you want to exercise your nerd knowledge,
this is the one for you.