High-Gain Multi-Band Koch Fractal FSS Antenna for Sub-6 GHz Applications
Applied Sciences,
Год журнала:
2024,
Номер
14(19), С. 9022 - 9022
Опубликована: Окт. 6, 2024
This
study
introduces
a
novel
antenna
based
on
the
binary
operation
of
modified
circular
patch
in
conjunction
with
Koch
fractal.
The
is
intended
for
applications
sub-6
GHz
band,
partial
C-band,
and
X-band.
low-cost
fabricated
1.6-mm-thick
FR-4
substrate.
A
frequency-selective
surface
(FSS)
used
to
overcome
decreased
values
gain
bandwidth
due
fractal
operations.
introduced
split
ring
resonator
(SRR)
substrate
dimension
reduction
reduce
gain.
air
gap
between
FSS
not
only
enhances
but
also
controls
frequency
tuning
at
design
frequency.
size
miniaturized
36.67%.
monopole
ground
loaded
an
SRR
results
improved
closest
(3.44
GHz)
near
achieves
peak
9.37
dBi
this
band.
FSS-based
4.65
improvement
value
FSS.
measured
simulated
plots
exhibit
excellent
match
each
other
all
three
bands
2.96–4.72
GHz.
These
cover
Wi-MAX
(3.5
GHz),
n77
(3300–3800
MHz),
n78
(3300–4200
approximately
n79
(4400–4990
addition
C-band
applications.
Язык: Английский
A Class of Sixth-Order Iterative Methods for Solving Nonlinear Systems: The Convergence and Fractals of Attractive Basins
Fractal and Fractional,
Год журнала:
2024,
Номер
8(3), С. 133 - 133
Опубликована: Фев. 26, 2024
In
this
paper,
a
Newton-type
iterative
scheme
for
solving
nonlinear
systems
is
designed.
the
process
of
proving
convergence
order,
we
use
higher
derivatives
function
and
show
that
order
method
six.
to
avoid
influence
existence
on
proof
convergence,
mainly
discuss
under
weak
conditions.
Banach
space,
local
established
by
using
ω-continuity
condition
first-order
Fréchet
derivative,
application
range
extended.
addition,
also
give
radius
sphere
uniqueness
its
solution.
Finally,
superiority
new
illustrated
drawing
attractive
basins
comparing
them
with
average
times
other
same-order
methods.
Additionally,
utilize
solve
both
matrix
sign
functions.
The
applicability
study
demonstrated
practical
chemical
problems.
Язык: Английский
A Flexible Multi-Band Antenna with a Spider Web-like Structure for 4G/5G/GPS/WIMAX/WLAN Applications
Electronics,
Год журнала:
2025,
Номер
14(2), С. 253 - 253
Опубликована: Янв. 9, 2025
In
this
paper,
based
on
bionics,
a
flexible
multi-band
antenna
is
designed
to
mimic
the
structure
of
spider’s
web,
which
supports
various
communication
standards
such
as
4G,
5G,
and
GPS.
The
lays
out
multiple
loop
branches
in
limited
space
achieve
wideband
operations
from
1.31
GHz
2
(42.4%),
3.4
4
(16.2%),
5.1
5.78
(12.5%).
selects
40
×
50
0.1
mm³
polyimide
dielectric
substrate
trapezoidal
coplanar
waveguide
feed.
A
simulation
experimental
analyses
demonstrate
that
exhibits
consistent
performance
when
subjected
different
bending
scenarios.
design
scheme
utilizing
streamlines
integration
process,
offering
promising
avenue
for
deployment
smart
wireless
devices.
results
tests
simulations
device
meets
requisite
communication.
Язык: Английский
Advances and Insights in 1D Energy Storage Strategy: Design, Analysis, and Applications of Fibrous Batteries
ACS Applied Energy Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 27, 2025
Язык: Английский
Screen-Printed Metamaterial Absorber Using Fractal Metal Mesh for Optical Transparency and Flexibility
Fractal and Fractional,
Год журнала:
2024,
Номер
8(5), С. 284 - 284
Опубликована: Май 9, 2024
In
stealth
applications,
there
is
a
growing
emphasis
on
the
development
of
radar-absorbing
structures
that
are
efficient,
flexible,
and
optically
transparent.
This
study
proposes
screen-printed
metamaterial
absorber
(MMA)
polyethylene
terephthalate
(PET)
substrates
using
indium
tin
oxide
(ITO)
as
grounding
layer,
which
achieves
both
optical
transparency
flexibility.
These
materials
methods
enhance
overall
flexibility
MMA.
To
address
limited
caused
by
silver
nanoparticle
ink
for
top
pattern,
metal
mesh
was
incorporated
to
reduce
area
ratio
printed
patterns,
thereby
enhancing
transparency.
By
incrementing
fractal
order
structure,
we
optimized
operating
frequency
target
X-band,
most
commonly
used
in
radar
detection.
The
proposed
MMA
demonstrates
remarkable
performance,
with
measured
absorption
91.99%
at
8.85
GHz
an
average
transmittance
46.70%
across
visible
light
spectrum
(450
700
nm),
indicating
its
potential
applications
transparent
windows
or
drone
stealth.
Язык: Английский
Thermodynamics for 5G technology and energy harvesting and relative topics
Thermal Science,
Год журнала:
2024,
Номер
28(3 Part A), С. 2009 - 2014
Опубликована: Янв. 1, 2024
5G
communication
technology
has
been
skyrocketing,
and
changed
everything
in
our
daily
lives,
its
applications
various
fields
are
also
promising.
However,
the
thermal
conductivity/dissipation
problems
of
highly
integrated
electronic
devices
electrical
equipment
becoming
more
prominent,
thermodynamics
offers
a
solution,
fractal
meta-surfaces
provides
an
extremely
efficient
approach
to
transfer
generated
waste
heat,
which
can
be
used
for
energy
harvesting,
thermodynamic
model
is
developed
management.
Язык: Английский
Advancements in Antenna Systems for B5G and 6G Applications
IntechOpen eBooks,
Год журнала:
2024,
Номер
unknown
Опубликована: Июнь 26, 2024
This
chapter
explores
the
fundamental
concepts
of
antenna
design
critical
for
beyond
5G
(B5G)
and
anticipated
6G
technologies.
It
delves
into
various
types,
including
microstrip
antennas,
metamaterial-based
designs,
reconfigurable
phased
array
antenna,
lens
highlighting
their
role
in
achieving
ultra-high
data
rates,
ultra-low
latency,
massive
device
connectivity
envisioned
B5G
networks.
The
discussion
covers
key
aspects
such
as
beamforming,
beam
steering,
pattern
reconfigurability
arrays,
along
with
interference
mitigation
strategies.
By
understanding
these
diverse
systems,
researchers
engineers
can
contribute
to
shaping
future
wireless
communication
era.
Язык: Английский
Thermodynamics and nanotechnology for 5G communication technology and energy harvesting
Thermal Science,
Год журнала:
2024,
Номер
00, С. 102 - 102
Опубликована: Янв. 1, 2024
5G
communication
technology
has
been
skyrocketing,
and
changed
everything
in
our
daily
lives,
its
applications
various
fields
are
also
promising.
However,
the
thermal
conductivity/dissipation
problems
of
highly
integrated
electronic
devices
electrical
equipment
becoming
more
prominent,
thermodynamics
offers
a
solution,
fractal
meta-surfaces
provides
an
extremely
efficient
approach
to
transfer
generated
waste
heat,
which
can
be
used
for
energy
harvesting,
thermodynamic
model
is
developed
management.
Язык: Английский
Review of Authentication, Blockchain, Driver ID Systems, Economic Aspects, and Communication Technologies in DWC for EVs in Smart Cities Applications
Smart Cities,
Год журнала:
2024,
Номер
7(6), С. 3121 - 3164
Опубликована: Окт. 24, 2024
The
rapid
advancement
and
adoption
of
electric
vehicles
(EVs)
necessitate
innovative
solutions
to
address
integration
challenges
in
modern
charging
infrastructure.
Dynamic
wireless
(DWC)
is
an
solution
for
powering
using
multiple
magnetic
transmitters
installed
beneath
the
road
a
receiver
located
on
underside
EV.
offers
issue
range
anxiety
by
allowing
EVs
charge
while
motion,
thereby
reducing
need
frequent
stops.
This
manuscript
reviews
several
pivotal
areas
critical
future
EV
DWC
technology
such
as
authentication
techniques,
blockchain
applications,
driver
identification
systems,
economic
aspects,
emerging
communication
technologies.
Ensuring
secure
access
this
infrastructure
requires
fast,
lightweight
systems.
Similarly,
plays
role
enhancing
Internet
Vehicles
(IoV)
architecture
decentralizing
securing
vehicular
networks,
thus
improving
privacy,
security,
efficiency.
Driver
crucial
safety
comfort,
are
analyzed.
Additionally,
feasibility
impact
evaluated,
providing
essential
insights
into
its
potential
effects
ecosystem.
paper
also
emphasizes
quick
systems
ensure
discusses
how
enhances
efficiency,
privacy
IoV
networks.
importance
comfort
study
confirms
viability
benefits
Язык: Английский