features of today’s 4G and will be in the best position to
support indoor 5G moving forward.
Overcome the Challenges with Full-Spectrum DAS
DAS comprises of cabling, small remote units, and
antennas that are distributed throughout a building and
linked to a central distribution hub, which connects to the
RF source used by the mobile operators. Through a DAS,
the operators’ wireless signal is distributed to all parts of
Because the signal used to support a DAS is separate
from outdoor cellular towers, capacity is dedicated to
the building, unlike for users of repeaters, which take the
capacity away from outdoor towers. Since it’s actually
an operator-provided and supported cellular signal being
brought into the building, users receive a guaranteed level
of service, as opposed to unguaranteed performance of
a voice-over-WiFi, for example. Calls can also seamlessly
hand off from the inside to the outside network as users
move from inside to outside the building.
Some DAS are capable of supporting all of the most
common cellular and public safety frequencies at the first
installation, with no additional hardware needed to add
new frequencies or wireless operators. New technologies
that take advantage of radio frequencies, like location-based services and Internet of Things (Io T) devices need
no additional infrastructure either, greatly saving on costs
over the lifetime of a system.
For a 5G-ready DAS, ensure the system has the
• Facilitates the ways tenants and residents prefer to
• Multi-carrier, giving access to everyone in the entire
building, no matter what carrier they use.
• Full spectrum, so it can access all of the most utilized
cellular and public safety signals as well as all of the
frequencies available between 150 MHz and 2700
MHz on a single hardware layer.
• Supports simple, inexpensive upgrades to meet tenant
and resident’s future connectivity and communication
• Uses a “one-and-done” approach to hardware
installation, with the single original hardware layer
able to support all carriers and frequency bands, along
with new connectivity requirements in the future,
without additional hardware.
• Fully fiber-based, instead of coaxial cable-based
or a hybrid of cable and fiber, to ensure optimal
performance now and in the future, to keep costs
lower, and minimize installation time.
• Supports emerging technologies like 5G, Io T, and
machine-to-machine (M2M) communications—all of
which need stable and reliable cellular connectivity.
5G: The Future of Connectivity
The demand for strong indoor wireless connectivity is
high now, and will only increase in the coming years. It’s
not certain at this point where exactly indoor 5G would
fall from a frequency point of view, so having an all-fiber-based solution that can support all frequencies with no
additional infrastructure in the future is ideal from a
Design engineers have a responsibility to helping their
customers select the tools and technologies that will
set them up for success, especially as true 5G comes
into being. The right DAS system will ensure a business
has reliable indoor connectivity now—and is ready for
whatever the future holds. ECN
0201HL Wirewound Chip Inductors
The Highest Inductance in an 0201 Package
• Inductance values from 22 to 51 nH
• Optimized for 700 MHz LTE and 5G
• Twice the Q factors of thin-film
multilayer technology ... up to 62 at 2. 4 GHz