VNA check standards
The TA430 (Insertable M-F) and TA431
(Non-insertable F-F) VNA check standards
can optionally be used to validate the
accuracy of a network analysis test setup
and its calibration before, during or after a
sequence of measurements is made.
These devices present a high and varying
impedance mismatch, delivering the
most demanding test of system measurement
accuracy currently available, and
giving confidence in an instrument, its test
leads and its ongoing calibration validity.
Suitable for use with any network analyser,
the check standards assure, for example,
that test leads and connectors have not
become damaged or that environmental
change is not degrading accuracy.
A data comparison utility is provided
with PicoVNA 2 software to evaluate the
comparison against a combination of
specified measurement uncertainties for
the device, test leads and the instrument.
Each check standard is supplied with
Touchstone measurement data on a USB
memory stick. The data is traceable via
PC3.5 standards to national standards.
The supplied Touchstone measurement
data is compatible with the PicoVNA 106
Vector Network Analyzer and can be used
to manually validate a measurement of any
manufacturer’s VNA, although the degree
of support for the comparison will vary.
Coaxial cable assemblies
superior phase performance
Smiths Interconnect has released its
Lab-Flex T Series of flexible coaxial cable
assemblies, mechanically robust and
specifically designed to minimize phase
change when subjected to a wide range of
This makes them an ideal choice
for system applications under extreme
temperature and environmental conditions
such as Radar, Test & Measurement, and
The Lab-Flex T Series currently consists
of the 065T, 100T, and 160T cable
models, which cover key performance
characteristics at various frequency bands
from DC to 50 GHz. They are available in
standard mechanical lengths or phasematched
electrical lengths as needed.
All products have gone through extensive
qualification testing in order to meet
today’s rigorous requirements per customer
application and industry standard.
Their special foam dielectric material
provides a much lower attenuation than
solid PTFE. Precision Connector interfaces
meet MIL-STD-348 requirements
and are designed for maximum frequency
60-GHz 802.11ay Wi-Fi
claim industry first
Qualcomm Technologies (San Diego, CA)
has announced a family of 60p-GHz Wi-Fi
chipsets offered as the industry’s first 11ay
solutions for mobile and infrastructure
The QCA64x8 and QCA64x1 chipsets
deliver 10+ Gbps network speeds and
wire-equivalent latency, while featuring
“the industry low-power benchmark” for
extended device battery life. The devices,
says the company, have the flexibility to
meet demands of ultra-high-definition
video streaming, virtual/augmented reality
(VR/AR), mobile screen casting, and
fixed wireless mesh backhaul, while also
supporting new 60-GHz Wi-Fi sensing
applications such as proximity and
presence detection, gesture recognitions,
room mapping with precise location, and
improved facial feature detection.
The family of 11ay 60-GHz Wi-Fi chipsets
includes the QCA6438 and QCA6428
for infrastructure and fixed wireless
access, and the QCA6421 and QCA6431
for mobile applications. Qualcomm Technologies
and Facebook announced earlier
this year that they were working together
to deliver high-speed internet connectivity
with Facebook’s Terragraph technology
through the development of a multi-node
wireless system based on the QCA6438
and QCA6428 chipsets.
The latest QCA64x8 and QCA64x1
60 GHz Wi-Fi chipsets are available now.
help verify performance in RF
Integra Technologies is providing Gallium
Nitride on Silicon Carbide (GaN-on-SiC)
HEMT transistor evaluation kits to designers
evaluating this technology for their
high power amplifier designs.
Each kit is customized to include a
designer’s transistor model of choice (partially
or fully-matched options are available)
and includes a test fixture with one
transistor fully mounted and tested, and a
second spare device. Full RF test results,
as tested under key conditions by the
Integra technical support team, are also
provided as a reference guideline.
These kits can be borrowed free for 30
days or be purchased to own.
Tiny 32.768 kHz MEMS
Murata claims to have developed the
smallest 32.768 kHz MEMS resonator (the
WMRAG series), which is expected to
make a significant contribution to reducing
the size and power consumption of IoT
devices and wearable devices.
22 MW November - December 2018 www.mwee.com