Highly Isolated Electrically Compact UWB MIMO Antenna for Wireless Communications Applications
Results in Engineering,
Journal Year:
2024,
Volume and Issue:
24, P. 103082 - 103082
Published: Oct. 9, 2024
Language: Английский
Radio-frequency Energy Harvester for a Hybrid Power Supply with Constant Voltage Output to a Water Meter
Junlin Mi,
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Ruinan Fan,
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Jianwei Jing
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et al.
Progress In Electromagnetics Research Letters,
Journal Year:
2024,
Volume and Issue:
118, P. 33 - 39
Published: Jan. 1, 2024
This
manuscript
proposes
a
hybrid
energy
harvest
and
management
system
to
manage
harvested
ambient
thermal
radio
frequency
(RF)
provide
constant
voltage
for
an
electronic
water
meter.It
mainly
includes
antenna,
rectifier,
thermoelectric
generators
(TEGs),
circuit.The
antenna
harvests
the
RF
power,
rectifier
converts
it
DC
power.The
powers
are
stored
in
capacitor
managed
by
FEH710
circuit
power
meter.Eight
convert
into
proposed
harvesting
has
been
evaluated
simulation
measurement.The
antenna's
reflection
coefficient
peak
gain
at
2.45
GHz
-30
dB
3.6
dBi,
respectively.The
rectifier's
measured
RF-DC
conversion
efficiency
(PCE)
is
66.7%
0
dBm.As
demonstration,
commercial
meter
works
stably
energy.The
expected
find
potential
practical
applications
Internet
of
Things
(IoT)
environments
with
radiation
coverage
temperature
gradients.
Language: Английский
Implementation of 3G, 4G Mobile Connections Technologies in Urban and Rural Regions
Electronics and Control Systems,
Journal Year:
2023,
Volume and Issue:
4(78), P. 62 - 68
Published: Dec. 27, 2023
Currently
in
Ukraine,
taking
into
account
the
development
of
latest
mobile
Internet
standards
(3G/4G),
it
is
possible
to
access
even
remote
places.
There
are
no
wired
due
high
cost
installation
and
maintenance.
At
same
time,
a
huge
amount
equipment
appeared
on
market,
which
allows
you
assemble
systems
for
obtaining
high-quality
over
wireless
communication
line.
This
refers
various
types
antennas
900–2700MHz
range,
modems
routers
with
3G/4G
support.
The
locations
base
stations
district
centers
predominantly.
So,
there
situation
that
villages,
settlements
do
not
have
opportunity
get
high-speed
Internet.
especially
harms
work
biological
rural
medical
clinics,
spread
territory
Ukraine
often
connected
network.
purpose
describe
briefly
some
practical
results
our
own
providing
places
state.
To
provide
this
service
areas
signal
amplification
necessary.
In
addition,
problem
propagation
radio
waves
rough
terrains
ultra
short
wave
microwave
ranges.
solve
problem,
proposed
use
an
external
antenna
factor,
will
be
installed
at
height
least
6
meters
above
ground
reduce
impact
interference
path
waves.
Language: Английский
Latest Means of Communications Based on LTE and MIMO Technologies in 3G, 4G Networks: Application for Contemporary Biomedical Practice in Rural Ukraine
Electronics and Control Systems,
Journal Year:
2024,
Volume and Issue:
1(79), P. 60 - 69
Published: March 29, 2024
The
network
organization
of
the
systems
economic
entities,
which
are
distributed
remotely
over
large
territories,
require
creation
high-quality
communications
for
them.
purpose
present
work
was
to
demonstrate
possibility
using
latest
means
communication
based
on
Long-Term
Evolution
and
Multiple-Input
Multiple-Output
technologies
(LTE-
MIMO-
technologies)
in
3G
4G
networks
solve
contemporary
tasks
organizing
mobile
some
places
territory
Ukraine
works
that
need
biological
medical
information
rarely
settled,
remote
regions.
publication
provides
author's
data
practical
rural
areas
considers
following
issues.
1-
Determination
spatial
parameters
LTE
standard
network.
2-
Preparation
a
map
area.
3-
Choosing
an
planning
option.
4-
Principles
construction
operation
networks.
5-
P-GW
(Packet
Data
Network
Gateway)
functions.
6-
MME
(Mobility
Management
Entity)
7-
Functions
PCRF.
8-
9-
Peculiarities
upper
lower
frequencies
LTE.
10-
Application
MIMO
technology
11-
results
performed
can
be
applied
networked
structures
development
use
domestic
economy,
agriculture,
science
branches
like
biology,
nature
protection,
such
branches.
In
result
done
type
antenna,
other
equipment
were
suggested;
they
should
used
strengthen
conditions,
as
well
suitable
antenna
modem
or
router.
Obtained
providing
ecological
monitoring,
activities,
information;
all
quick
exchange
scientific
centers,
settlements,
possibilities
primarily
developed.
Language: Английский