Advances in civil and industrial engineering book series,
Journal Year:
2024,
Volume and Issue:
unknown, P. 1 - 15
Published: March 4, 2024
This
chapter
discusses
algorithmic
energy
conservation
in
multi-cell
multiple-input
multiple-output
(MIMO)
downstream
transmission.
The
authors
propose
using
adaptive
particle
swarm
optimization
(APSO)
to
reduce
the
issue.
By
framing
issue
as
a
limited
assignment,
they
present
solid
framework
that
allocates
transmission
power
levels
antennas
maximize
efficiency
and
meet
network
customers'
quality
of
service.
To
evaluate
technique,
simulated
various
settings
with
different
user
distributions
channel
conditions.
approach
outperforms
previous
energy-saving
methods
without
losing
whole
sum
rate,
increasing
significantly.
optimal
antenna
components
best
fitness
value,
proposed
APSO
model
guarantees
better
allocation
schemes
wireless
environments
than
current
approaches.
Scientific Reports,
Journal Year:
2025,
Volume and Issue:
15(1)
Published: March 27, 2025
Abstract
A
quad-port
dielectric
resonator
antenna
(DRA)
is
proposed
for
sub-6
GHz
5G
MIMO
applications,
featuring
high
isolation,
dual-band
operation,
and
enhanced
efficiency.
The
designed
using
electromagnetic
coupling
with
a
triangular
patch
to
excite
the
square
resonators
(DRs)
at
targeted
resonance
modes
(TE
x
111
TE
121
),
achieving
broadband
polarization
diversity.
structure
exhibits
self-isolation
above
20
dB
without
requiring
additional
decoupling
structures.
use
of
Alumina
(εr
=
9.9,
tanδ
0.0001)
ensures
low
loss,
efficiency
(88.9%
93.8%),
strong
radiation
performance,
peak
gains
9.12
dBi
8.58
3.72
4.75
GHz,
respectively.
full
ground
plane
optimized
spatial
placement
further
contribute
reduced
mutual
improved
diversity
an
envelope
correlation
coefficient
(ECC)
0.042
channel
capacity
loss
(CCL)
below
0.2
bits/s/Hz.
antenna’s
measured
results
align
closely
simulations,
confirming
its
suitability
high-performance
communication
systems.
Microwave and Optical Technology Letters,
Journal Year:
2024,
Volume and Issue:
66(4)
Published: April 1, 2024
Abstract
The
article
details
the
development
and
production
of
an
ultra‐wideband
discrete
single‐pole‐double‐throw
(SPDT)
Switch,
measuring
,
functioning
within
23.4–31
GHz
frequency
range,
encompassing
24
28
GHz.
This
switch
is
specifically
engineered
to
bolster
high‐frequency
systems
in
automotive
fifth‐generation
applications.
Our
findings
demonstrate
that
SPDT
performs
on
par
with
integrated
circuits
while
delivering
consistent
performance
throughout
its
spectrum.
Furthermore,
it
offers
a
cost‐effective
fabrication
process.
exhibits
insertion
loss
ranging
from
1.6
2.2
dB,
return
isolation
surpassing
15
25
respectively,
across
majority
bandwidths.
Telecom,
Journal Year:
2025,
Volume and Issue:
6(1), P. 14 - 14
Published: Feb. 25, 2025
This
work
introduces
a
high-performance
multi-input
multi-output
(MIMO)
antenna
design
to
operate
at
the
28
GHz
band.
The
proposed
four-port
MIMO
antenna,
in
which
each
port
comprises
1
×
8
series-fed
array,
achieves
peak
gains
of
13
dBi
along
with
bandwidths
GHz.
Enhanced
performance
is
achieved
through
optimal
spacing
elements
and
decoupling
methodology
comprising
well-designed
metamaterial
unit
cell,
leading
reduced
interference
between
arrays.
shows
significantly
suppressed
mutual
coupling
be
less
than
−40
dB,
diversity
gain
that
very
close
10
an
envelope
correlation
coefficient
0.00012,
channel
capacity
loss
0.147
bit/s/Hz,
experimental
assessments
confirmed
these
developments,
endorsing
suggested
as
robust
contender
for
5G
mmWave
communications.
Applied Sciences,
Journal Year:
2025,
Volume and Issue:
15(7), P. 3993 - 3993
Published: April 4, 2025
This
study
presents
a
novel
dual-band
microstrip
antenna
operating
at
28/38
GHz,
which
is
designed
for
fifth
generation
(5G)
and
next-generation
communications.
The
objective
was
to
create
high-gain,
single-element
solution
that
addresses
millimeter-wave
(mmWave)
challenges,
like
attenuation
signal
loss,
offering
more
efficient
alternative
complex
array
antennas.
using
Rogers
RT/duroid
5880
as
substrate,
CST
simulations
were
used
optimize
the
return
gain,
efficiency.
Analytical
methods
parametric
analyses
further
design.
Additionally,
an
SMP
connector
integrated
into
simulated
model
Antenna
Magus
software,
followed
by
refinement
through
additional
studies.
final
compact
(33
×
27
1.6
mm3)
demonstrates
excellent
performance
with
simplified
fabrication.
achieved
bandwidths
of
1.12
GHz
28
1.27
38
remarkably
low
loss
values
−53.04
dB
−83.65
dB,
respectively.
gain
reached
7.82
dBi
8.98
GHz—prototype
measurements
closely
aligned
simulations,
confirming
reliability.
introduces
high-performance,
both
simple
complex.
meticulous
optimization
process,
including
variations,
minimized
fabrication
sensitivity
improved
overall
performance,
thereby
marking
significant
advancement
in
Systems,
Journal Year:
2024,
Volume and Issue:
12(6), P. 184 - 184
Published: May 24, 2024
This
study
used
a
technology–organization–environment
(TOE)
framework
as
the
primary
analytical
tool
to
explore
burgeoning
capabilities
of
blockchain
technology
in
area
5G
ceramic
antenna
development.
A
causal
loop
diagram
(CLD)
analysis
is
further
clarify
complex
dynamics
and
feedback
mechanisms,
impact
on
design,
production,
deployment
phases
antennas,
which
play
pivotal
role
development
communications,
studied.
We
found
that
blockchain’s
unique
features,
including
its
immutable
ledger
decentralized
architecture,
have
potential
significantly
improve
transparency,
security,
efficiency
manufacturing
process.
Technology
(T),
organization
(O),
environment
(E)
were
top
factors,
subfactors
TOE
selected
analyzed
using
Analytic
Hierarchy
Process
(AHP)
by
CLD.
The
AHP
was
evaluate
relative
importance
various
internal
external
factors
affecting
adoption
technology.
integration
with
CLD
provides
comprehensive
enhances
understanding
methodological
approach
not
only
clarifies
interactions
between
technological,
organizational,
environmental
but
also
facilitates
strategic
decision-making
through
structured
evaluation
these
factors.
showed
technical
are
most
important
manufacturing,
weight
0.427,
indicates
production.
In
addition,
organizational
given
weights
0.302
0.271,
respectively,
confirming
technological
innovation
process
optimization.
subfactor
‘Blockchain
Technology’
has
highest
ranking
among
subfactors,
global
value
0.129,
emphasizing
explored
complexities
introducing
into
industry
and,
an
in-depth
investigation
benefits
such
integration,
it
aims
propose
new
approaches
quality
control
efficiency.
research
findings
aim
contribute
sustainable
growth
telecommunications
providing
recommendations
for
application
production
antennas.
IEEE Access,
Journal Year:
2024,
Volume and Issue:
12, P. 110283 - 110298
Published: Jan. 1, 2024
Four
miniaturized
four-element
multiple-input
multiple-output
(MIMO)
antenna
designs
are
proposed,
designed,
and
fabricated
with
dimensions
of
26
mm
x
0.8
each.
The
first
MIMO
design
operates
at
3.5
GHz,
while
the
second
5.2
GHz.
combined
into
a
third
that
can
be
reconfigured
to
operate
either
GHz
or
A
new
concept
balance
is
introduced
address
issue
small
ground
faced
by
previous
designs.
This
applied
design,
resulting
in
fourth
reconfigurable
operating
demonstrates
good
impedance
matching
both
frequencies,
isolation
levels
approximately
25
dB
21
dB,
envelope
correlation
coefficients
(ECC)
less
than
0.0001,
diversity
gain
(DG)
around
10
peak
realized
gains
dBi
4
radiation
efficiency
compact
88%
91%
measured
results
show
excellent
agreement
simulated
for
all
four
