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2015 | 2016
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 challenge the Department of Defense will have with commercial services looking
to operate in the millimeter-wave bands for 5G, where military satellite and radars now operate without
significant threat of interference. He also mentions research in progress that allows Wi-Fi to generate
3D tracking maps of user movement within a router's signal range. Anatech's business is to make certain
that system and circuit designers have capable filters available to assure successful implementation.
A Word from Sam Benzacar
More Interference for DoD on
By Sam Benzacar
As we've noted before in this column, the Department of Defense faces interference challenges at
least as daunting as the commercial wireless industry. This situation looks likely to become even more
challenging in the future because military radar and satellite communication systems operate at frequencies
well into the millimeter-wave region, which is precisely where the fifth generation of cellular is headed.
In addition, the FCC's recent successful spectrum auction has given T-Mobile significant assets at 600
MHz, which is the figure shows covers almost the entire United States. Others gained 600 MHz spectrum
This is obviously
not the first time the DoD has had to contend with services encroaching on its allocated frequencies.
However, even though frequency sharing will be employed at the millimeter-wave frequencies where military
satellite communications systems operate, the potential for interference still exists. And allocations
below 1 GHz are already so densely populated that even if the fundamental frequencies don't create problems,
harmonics and spurious signals quite possibly will.
It's not an insignificant problem for a mission-critical resource such as the military, and it will
inevitably require DoD to step up its spectrum monitoring activities in an attempt to ensure that interference
doesn't cause major problems. However, it will also inevitably need what RF and microwave filters have
always delivered--extremely high levels of interference rejection, not just for systems and development
but for those in the field. In the latter case, filters represent the only viable way to cost-effectively
mitigate interference, as a complete redesign is obviously not feasible. Fortunately, filters have a
long track record of fending off interference effectively at frequencies throughout the electromagnetic
Anatech Electronics also has a long track record of solving interference problems for defense systems
on the ground, in the air, and aboard ships. We offer standard filters for every frequency range used
by DoD, the Department of Homeland Security, and other defense-related organizations. We also have the
ability to design custom filters in a short time as we've created a library of more than 5,000 filter
designs that can be easily modified for any requirement.
So, please call us at (973) 772-4242 or by email at
Researchers: Wi-Fi Can See Into Your Home
Scientists at the Technical University of Munich have determined that it's possible to use a Wi-Fi
signal to create three-dimensional images of an area and the objects and people inside. The researchers
say the capability allows buildings to be scanned and individuals to be tracked indoors, while also
being able to find people buried in avalanches or earthquakes. The discovery was achieved by using a
holographic imaging process that shows the ability of a Wi-Fi transmitter to generate three-dimensional
images of the surrounding environment. The holograms project an image that similar to that of peering
through a window.
Security for Mission-Critical IOT
A new standard for
narrowband data for mission-critical IoT communications has backing from an industry association and
is behind a new service launch. The standard was developed with input from the WiMAX Forum, the Electric
Power Research Institute (EPRI), the Utilities Technology Council, and industry users and suppliers.
The existing WiMAX standard (IEEE 802.16e) will be amended to support channel sizes between 100 kHz
and 1.25 MHz, replacing channel sizes beginning at 1.25 MHz. Full Spectrum, Inc., plans to create a
network service for mission-critical IoT based on the new 0802.16s standard that it will launch first
in the New York City area, as well as some areas within New York State, Connecticut, New Jersey, and
Pennsylvania by the third quarter of this year.
AT&T, which will create the first nationwide public safety broadband network in the U.S., has
been rapidly developing plans it was awarded the $46.5 billion contract by FirstNet. AT&T's existing
network infrastructure will be used and the company says it will deploy an additional 40 MHz of commercial
spectrum to complement the 20 MHz of FirstNet spectrum at 700 MHz. AT&T's partners include Motorola
Solutions, General Dynamics, Sapient Consulting, and Inmarsat Government. A draft of the team's implementation
plans is expected in draft form next month.
Verizon, Cisco, and Samsung Test 5G in Michigan
Verizon is conducting a 5G network trial Ann Arbor, Mich., with Cisco and Samsung and plans to test
fixed wireless 5G in 11 U.S. markets this year to validate the technology in various settings and with
varying vendor support. Samsung provided its virtual radio access network solution, base station, and
home router equipment, and Cisco provided a virtual packet core. The companies worked on interoperability
testing between the core and radio networks and user devices. Function virtualization of the 5G network
is also being tested, which a major element of the fifth generation of wireless.
Check out Our Filter Products
Cavity Band Pass Filters
Band Pass Filters Cavity Bandstop/Notch Filter
About Anatech Electronics
Anatech Electronics, Inc. (AEI) specializes in the design and manufacture of standard and custom
RF and microwave filters and other passive components and subsystems employed in commercial, industrial,
and aerospace and applications. Products are available from an operating frequency range of 10 kHz to
30 GHz and include cavity, ceramic, crystal, LC, and surface acoustic wave (SAW), as well as power combiners/dividers,
duplexers and diplexers, directional couplers, terminations, attenuators, circulators, EMI filters,
and lightning arrestors. The company's custom products and capabilities are available at
Anatech Electronics, Inc.
70 Outwater Lane
Garfield, NJ 07026
Posted May 18, 2017