Products
GNSS receivers achieve
4.5ns stability
Furuno Electric Co., Ltd., has developed
the GT-88 and GF-8801/02/03/04/05
GNSS timing modules for users who
require UTC time-synchronized signals to
meet the latest 5G requirements.
The modules provide UTC time-synchronized
timing signals (1PPS/10-MHz)
by receiving GNSS satellite signals.
Achieved stability is better than that of an
atomic clock, including a rubidium. The
GT/GF-88 series includes a brand-new
algorithm, named Dynamic Satellite Selection
™ that provides outstanding multipath
mitigation, especially in urban canyon
environments. This algorithm was developed
by Nippon Telegraph and Telephone
Corporation (NTT) based in Tokyo, Japan.
The modules deliver extremely high
stability of 4.5ns (1 sigma), only requiring
reception of the L1 band (1575.42 MHz)
frequency GNSS satellites. This was
achieved by improving advanced position
estimation algorithms and optimizing position
calculation among several different
GNSS satellite constellations. It enables
users to achieve 5G-required performance
without any changes to existing single
band GNSS antennas.
The modules incorporate Dynamic
Satellite Selection™, an advanced multipath
mitigation algorithm developed by
NTT. Normally typical time synchronization
performance deteriorates in urban
canyon environments due to the effect of
multipath. Dynamic Satellite Selection™
reduces this time error by one-fifth. This
provides more flexibility when installing
GNSS antennas. Consequently, the GT/
GF-88 series now permits GNSS antennas
to be mounted on walls, windows of
tall buildings and other difficult reception
environments.
The GT/GF-88 series continues to
support GPS, GLONASS and QZSS satellite
constellations, and now adds Galileo
support. As the total number of satellites
available increases, operational stability
also increases.
www.furuno.com
Next gen RBS and RRU
wireless test
A flexible, comprehensive and cost-efficient
over-the-air (OTA) test and measurement
system for high-power 5G radio
base stations (RBS) & remote radio units
(RRU), the the Bluetest RTS85HP was
developed to meet new, unique demands
for 5G base station testing and a dramatically
increased need for OTA systems.
The next generation 5G OTA test and
measurement chamber is a benchmark
system for rapid wireless measurement
and offers substantial business benefits
The RTS85HP’s technology and specifications
target base station manufacturer
R&D and production, as well as additional
segments such as mobile operators. The
new benchmark chamber has already
been installed at a base station manufacturer
production site, as well as a leading
Asia Pacific mobile operator, for testing
5G base station equipment before roll-out
in the field.
Bluetest has addressed measurement
challenges introduced by 5G, such as
measuring output power, adjacent channel
leakage (ACLR) or spurious emission
on massive MIMO/beamforming base
stations with as much as 64 or more
individual antenna ports. The company
asserts that using traditional conducted
measurements is not a sustainable
practice and may in many cases not even
be technically possible, due to the close
integration between the radios and antennas.
With the elimination of the traditional
antenna cable, measurements need to be
adapted to Over-the-Air testing.
With a frequency range of 500 MHz
to 43 GHz, the RTS85HP converses all
currently discussed 5G bands on sub-
6‑GHz as well as mmWave bands, and a
roadmap including a frequency extension
to 60 GHz – to align with 3GPP spurious
emission measurement requirements. The
unique chamber is designed to handle
RRU output power levels up to 200 W,
with communication interfaces as well as
power supply interfaces in place to meet
the requirements of base station testing.
Usability and installation aspects are
incorporated by providing customers
with a smart, user-friendly GUI including
Flow Manager and Flow Analyser. The
GUI delivers the possibility to interface
with external software, supporting all the
testing scenarios quickly, in real-time,
and the ability to easily request and
add customised features. The Bluetest
RTS85HP employs a comparably compact
size and a practical chamber height
– making it viable in most, normal-sized
indoor conditions.
www.bluetest.se
E-band rotary joint
Sage Millimeter has made available the
SAN-60390310-125I125I-S1 E-band
rotary joint that covers the frequency
range of 60 to 90 GHz.
The rotary joint provides a consistent
low insertion loss while mechanically
rotating at the speed of 10 turns or higher
per second. It incorporates high precision
bearing and propriety mechanical design
to ensure smooth mechanical rotation.
The rotary joint is equipped with two
0.125-inch diameter circular waveguides
with UG-387/U-M anti-cocking flanges.
The rotary joint supports circular polarized
waveforms.
www.sagemillimeter.com
NFC inlay
cuts costs for mass IoT
applications
NXP has announced an ultra-low-cost
radio frequency identification (RFID) inlay
in collaboration with Identive.
Using NXP’s near field communication
(NFC) IC NTAG 210μ, Identiv’s Dry
Inlay (25 mm diameter) has launched at a
price of $0.05 a tag for a minimum order
of 20Ku. Compatible with any Android or
Apple iOS 11 and up NFC-enabled device,
22 MW March - April 2019 www.mwee.com
/www.furuno.com
/www.bluetest.se
/www.sagemillimeter.com
/www.mwee.com
