Inter
national
J
our
nal
of
Electrical
and
Computer
Engineering
(IJECE)
V
ol.
9,
No.
3,
June
2019,
pp.
1902
1909
ISSN:
2088-8708,
DOI:
10.11591/ijece.v9i3.pp1902-1909
r
1902
Single
feed
cir
cularly
polarized
cr
escent-cut
and
extended
cor
ner
squar
e
micr
ostrip
antennas
f
or
wir
eless
biotelemetry
Mehdi
Hasan
Cho
wdhury
1
,
Quazi
Delwar
Hossain
2
,
Md.
Azad
Hossain
3
,
Ray
Chak
Chung
Cheung
4
1,4
Department
of
Electronic
Engineering,
City
Uni
v
ersity
of
Hong
K
ong,
Hong
K
ong
SAR
2
Department
of
Electrical
&
Electronic
Engineering,
Chittagong
Uni
v
ersity
of
Engineering
&
T
echnology
,
Bangladesh
3
Department
of
Electronics
&
T
elecommunication
Engineering,
Chittagong
Uni
v
ersity
of
Engineering
&
T
echnology
,
Bangladesh
Article
Inf
o
Article
history:
Recei
v
ed
May
9,
2018
Re
vised
Oct
22,
2018
Accepted
Dec
3,
2018
K
eyw
ords:
Circular
polarization
Microstrip
antenna
Single-feed
ISM
band
W
ireless
biotelemetry
ABSTRA
CT
In
this
paper
,
the
de
v
elopment
of
tw
o
no
v
el
circularly
polarized
microstrip
antennas
is
thoroughly
e
xplained.
These
antennas
are
fed
by
coaxial
fe
eding
technique.
One
of
the
primary
objecti
v
es
of
the
proposed
w
ork
is
to
tune
the
antennas
to
w
ork
in
ISM
band.
This
frequenc
y
band
refers
to
the
internationally
recognized
radio
frequenc
y
band-
width
which
is
to
be
used
e
xplicitly
for
Industrial,
Scientific,
and
Medical
applications.
Therefore,
these
antennas
w
ould
be
suitable
to
use
in
the
field
of
wireless
biotelemetry
.
T
w
o
ne
w
antenna
design
techni
ques
ha
v
e
been
introduced
to
produce
circular
polar
-
ization,
and
details
of
these
schemes
are
described.
The
proposed
microstrip
antennas
are
designed
and
simulated
on
Adv
anced
Design
System
(ADS)
softw
are.
The
return
loss
of
the
proposed
crescent-cut
antenna
is
-19.3
dB
at
the
operating
frequenc
y
.
The
e
xtended
corner
antenna
has
the
return
loss
of
-29.3
dB
at
the
tuned
frequenc
y
.
The
simulation
results
are
also
presented
and
discussed.
Copyright
c
2019
Institute
of
Advanced
Engineering
and
Science
.
All
rights
r
eserved.
Corresponding
A
uthor:
Mehdi
Hasan
Cho
wdhury
,
Department
of
Electronic
Engineering,
City
Uni
v
ersity
of
Hong
K
ong,
K
o
wloon,
Hong
K
ong
SAR.
Email:
mhcho
wdhury
.eee@gmail.com
1.
INTR
ODUCTION
T
elemetry
means
accumulating
data
from
a
remote
location
and
t
hen
forw
arding
the
information
to
a
suitable
place
to
be
e
xamined
and
documented.
W
ireless
biotelemetry
is
the
distinguished
field
of
biomedical
instrumentation
that
enables
transmission
and
reception
of
bio-signals
from
an
incon
v
enient
location
to
a
con
v
e-
nient
remote
monitoring
site
without
using
wires
[1].
Meticulous
research
acti
vities
in
the
field
of
biotelemetry
ha
v
e
been
carried
out
in
recent
years
due
to
its
significant
impact
on
patient
monitoring
in
dis
tant
non-clinical
en
vironments,
such
as
old
communities,
post-sur
gery
patients
at
homes,
milit
ary
bases,
etc.
[2].
Observing
a
patient
at
home
for
an
e
xtended
duration
can
help
a
ph
ysician
to
follo
w
disease
progression.
Thus,
the
earlier
treatment
can
sa
v
e
man
y
li
v
es,
and
it
will
be
only
achie
v
able
if
detection
of
a
disease
can
be
done
timely
.
Ho
we
v
er
,
telecommunication
frequenc
y
bands
are
re
gulated
by
the
Federal
Communications
Com-
mission
(FCC)
and
similar
agencies
[3].
Frequenc
y
band
2.4
GHz
to
2.5
GHz
is
dedicated
for
the
ISM
band
(industrial,
scientific
and
medical
radio
band)[4],
which
belongs
to
the
internationally
reserv
ed
radio
spectrum
for
the
scientific,
medical
and
industrial
applications
[5].
This
f
requenc
y
bandwidth
can
be
used
in
numerous
applications,
including
the
W
ireless
Biotelemetry
,
without
a
license
in
most
countries
[6].
The
size,
weight,
cost,
and
performance
of
the
antennas
in
the
field
of
wireless
biotelemet
ry
are
constraints
and
to
meet
these
requirements,
microstrip
antennas
can
be
used
as
the
y
of
fer
simple
s
tructure,
lo
w-
cost
small
size,
and
high
polarization
[7].
A
microstrip
antenna
is
manuf
actured
using
microstrip
techniques
J
ournal
homepage:
http://iaescor
e
.com/journals/inde
x.php/IJECE
Evaluation Warning : The document was created with Spire.PDF for Python.
IJECE
ISSN:
2088-8708
r
1903
on
a
PCB
(Printed
Circuit
Board)
and
frequently
used
in
micro
w
a
v
e
frequenc
y
communication.
Figure
1.
Basic
Structure
of
a
microstrip
patch
antenna
[8]
If
we
consider
a
simple
microstrip
antenna,
as
sho
wn
in
the
Figure
1,
it
consists
of
a
pair
of
parall
el
conducting
layers
separated
by
a
dielectric
substr
ate.
The
upper
conducting
layer
(also
kno
wn
as
the
‘P
atch’)
is
the
source
of
radiation,
and
the
lo
wer
layer
is
the
ground
plane.
T
ypically
microstrip
patch
antennas
are
rectangular
or
circular
,
b
ut
it
is
possible
to
mak
e
them
in
an
y
reasonable
geometrical
shape.
Polarization
is
one
of
the
most
vital
f
actors
in
w
a
v
e
propag
ation
between
the
transmitting
and
recei
v
er
antennas.
The
polarization
of
an
antenna
in
a
particular
direction
defines
as
‘the
polarization
of
the
w
a
v
e
transmitted
by
the
antenna’.
There
are
three
types
of
polarization:
linear
polarization,
elliptic
al
polarization,
and
circular
polarization
[9].
An
antenna
is
linearly
polarized
if
the
field
v
ector
(electric
or
magnetic)
for
the
transmitted
w
a
v
e
of
the
antenna
only
has
one
component
or
tw
o
orthogonal
linear
component
that
are
in
time
phase
or
180
(or
multiples
of
180
)
out
of
phase.
(a)
Linear
Polarization
(b)
Elliptical
Polarization
(c)
Circular
Polarization
Figure
2.
Dif
ferent
polarization
of
antenna
[10]
An
antenna
radiates
elliptically
polarized
w
a
v
e
when
the
field
v
ector
(electric
or
magnetic)
for
t
h
e
transmitted
w
a
v
e
of
the
antenna
has
tw
o
unequal
orthogonal
linear
components
and
the
phase
dif
ference
be-
tween
them
is
odd
multiples
of
90
.
When
the
field
v
ector
(electric
or
magnetic)
for
the
transmitted
w
a
v
e
of
the
antenna
has
tw
o
orthogonal
linear
components
with
the
same
magnitude
and
the
phase
dif
ference
between
them
is
odd
multiples
of
90
,
then
antenna
has
the
circular
polarization
(CP).
Figure
2
sho
ws
ho
w
dif
ferent
polarized
w
a
v
e
propag
ates.
CP
of
fers
multiple
benefits
o
v
er
linear
polariz
ation
[10].
If
linearly
polarized
antennas
are
used,
both
the
recei
ving
and
transmitting
antenna
must
be
al
igned
to
a
v
oid
polarization
mismatch.
F
or
circular
polarization,
this
is
not
essential.
Additionall
y
,
CP
antennas
are
immune
to
F
araday
rotation,
and
the
y
can
mitig
ate
multipath
f
ading.
Therefore,
CP
antennas
of
fer
the
benefit
of
high
data
rate
communication,
as
it
decreases
interference
between
direct
and
reflected
signal.
2.
ST
A
TE
OF
THE
AR
T
Single
probe-fed
circularly
polarized
microstrip
antennas
are
highly
helpful
in
situations
where
it
is
dif
ficult
to
implement
dual-orthogonal
feeds.
Man
y
designs
of
circularly
polarized
single-feed
microstrip
antennas
with
s
quare
or
circular
patches
are
kno
wn.
Usually
,
a
microstrip
patch
with
a
single-point
feed
emits
linear
polarization.
If
circular
polarization
is
needed,
it
wil
l
be
required
for
tw
o
orthogonal
patch
modes
with
the
same
amplitude
and
with
90
phase
dif
ference
to
be
induced.
Single
feed
cir
cularly
polarized
cr
escent-cut
and
e
xtended...
(Mehdi
Hasan
Chowdhury)
Evaluation Warning : The document was created with Spire.PDF for Python.
1904
r
ISSN:
2088-8708
(a)
Single
probe-fed
circularly
polarized
truncated
corner
microstrip
antenna
[11]
(b)
Single
probe-fed
circularly
polarized
U-slot
patch
antenna
[12]
(c)
Single
probe-fed
circularly
polarized
truncated
corner
microstrip
antenna
with
U-slot
[11]
Figure
3.
Some
common
configuration
of
single
probe-fed
circularly
polarized
rectangular
microstrip
antenna
This
technique
can
be
implemented
by
slightly
perturbing
a
microstrip
antenna
patch
at
proper
places.
Con
v
entionally
this
is
done
by
truncating
the
corners
of
a
rectangular
microstrip
patch
(Figure
3a)
[11]
or
introducing
slots
inside
the
radiating
patch
(Figure
3b)
[12].
(a)
Single
probe-fed
circularly
polarized
circular
microstrip
antenna
with
a
cross-slot
of
unequal
arm
lengths
[13]
(b)
Single
probe-fed
circularly
polarized
triangular
microstrip
antennas
with
a
horizontal
narro
w
slot
[14]
Figure
4.
Some
common
configuration
of
single
probe-fed
circularly
polarized
circular
and
triangular
microstrip
antenna
Sometimes
these
tw
o
techniques
are
combined
to
assure
better
performance
(Figure
3c)
[11].
Ho
w-
e
v
er
,
It
is
also
possible
to
design
circular
(Figure
4a)
[13],
t
riangular
(Figure
4b)
[14]
or
an
y
geometrical
shape
[8]
circularly
polarized
microstrip
antenna
if
needed.
3.
ANTENN
A
DESIGN
AND
SIMULA
TION
RESUL
TS
A
microstrip
patch
with
a
single-point
feed
usually
radiates
linear
polarization.
If
circular
polari
zation
is
needed,
it
will
be
required
for
tw
o
orthogonal
patch
modes
with
the
same
amplitude
and
with
90
phase
dif
ference
to
be
induced.
This
can
be
accomplished
by
slightly
perturbing
a
patch
at
appropriate
locations
with
respect
to
the
feed
[15].
Con
v
entionally
this
is
done
by
truncating
triangular
portions
across
the
diagonal
of
the
patch
(as
sho
wn
in
Figure
5a).
As
pre
viously
stated,
tw
o
no
v
el
single
feed
circularly
polarized
(CP)
microstrip
antennas
are
de
v
el-
oped
for
this
research.
The
first
technique
that
is
used
to
design
a
unique
circular
polarized
microstrip
antenna
is
done
by
truncating
circular
sectors
across
the
diagonal
of
a
square
antenna
patch
(as
illustrated
in
Figure
5b).
The
second
t
echnique
that
is
used
to
fulfill
the
purpose
of
designing
unique
circular
polarized
microstrip
antenna
is
done
by
e
xtending
circular
sectors
across
the
diagonal
of
a
square
antenna
patch
(as
presented
in
Figure
5c).
IJECE,
V
ol.
9,
No.
3,
June
2019
:
1902
–
1909
Evaluation Warning : The document was created with Spire.PDF for Python.
IJECE
ISSN:
2088-8708
r
1905
(a)
Con
v
entional
triangular
truncation
technique
(b)
Ne
w
circular
sector
truncation
technique
(c)
Ne
w
circular
sector
e
xtension
technique
Figure
5.
Con
v
entional
and
no
v
el
techniques
to
achie
v
e
circular
polarization
with
single-point
feed
Adv
anced
Design
System
(ADS)
is
considered
as
one
of
the
leading
electr
on
i
c
design
autom
ation
(ED
A)
softw
are
for
RF
,
micro
w
a
v
e
and
high-speed
digital
applications.
This
softw
are
package
is
distrib
uted
by
K
e
ysight
T
echnologies
(formerly
Agilent’
s
Electronic
Measurem
ent).
ADS
presents
an
inte
grated
design
en
vi-
ronment
to
engineers
who
need
to
de
v
elop
RF
electronic
products
such
as
microstrip
antennas,
radar
systems,
etc.
Adv
anced
Design
System
(ADS)
is
e
xclusi
v
ely
used
i
n
this
research
to
design
and
simulate
the
microstrip
antennas.
At
first,
a
Linearly
Polarized
2.45
GHz
square
microstrip
antenna
is
simulated.
The
resultant
param-
eters
of
this
antenna
are
used
to
compare
and
e
xplain
the
ne
wly
de
v
eloped
Circular
Polarized
antennas.
Some
considered
v
alues
of
design
parameters
which
are
k
ept
constant
for
designing
all
the
antennas
are
presented
in
the
T
able
1.
T
able
1.
Considered
design
parameters
of
the
proposed
antennas
Design
P
arameters
V
alues
Dielectric
Material
T
eflon
Dielectric
Constant
2.0
T
an
0.000194
Thickness
of
Substrate
0.8
mm
Thickness
of
Conductor
(Copper)
0.018
mm
Port
Impedance
50
Figure
6
sho
ws
the
t
o
p
vie
w
and
side
vie
w
of
a
2.45
GHz
square
microstrip
antenna
with
linear
polarization.
This
antenna
is
fed
by
a
direct
feed
microstrip
transmission
line.
The
dimensions
are
also
mark
ed
in
the
Figure
6.
Figure
6.
The
2.45
GHz
square
Microstrip
antenna
with
linear
polarization
The
return
loss,
S(1,1)
simulation
result
of
this
antenna
is
sho
wn
in
Figure
7a.
This
result
indicat
es
that
the
return
loss
is
lo
west
(
-40.6
dB)
at
near
of
the
operating
frequenc
y
of
2.449
2.45
GHz.
Figure
7b
Single
feed
cir
cularly
polarized
cr
escent-cut
and
e
xtended...
(Mehdi
Hasan
Chowdhury)
Evaluation Warning : The document was created with Spire.PDF for Python.
1906
r
ISSN:
2088-8708
illustrates
the
Return
loss,
S(1,1)
on
Sm
ith
Chart.
This
graph
re
v
eals
that
the
antenna
is
linearly
polarized
as
there
is
no
visible
cusp
(sharp
f
all
and
immediate
rise)
on
the
curv
e.
(a)
Return
loss,
S(1,1)
of
the
linear
polarized
square
microstrip
antenna
(b)
Return
loss,
S(1,1)
of
the
linear
polarized
square
microstrip
antenna
on
Smith
Chart
Figure
7.
S(1,1)
parameter
of
the
linear
polarized
square
microstrip
antenna
T
o
achie
v
e
circular
polarization
with
a
single
feed
the
square
antenna
patch
of
Figure
6
is
modified
by
slightly
perturbing
it
at
suitable
locations.
Figure
8
sho
ws
the
top
vie
w
and
side
vie
w
of
the
ne
wly
designed
Crescent-Cut
(i.e.,
circular
sector
truncated)
square
microstrip
antenna
with
circular
polarization.
This
antenna
is
fed
by
coaxial
feeding
technique.
The
dimensions
are
also
mark
ed
in
the
Figure
8.
Figure
8.
The
crescent-cut
microstrip
antenna
with
circular
polarization
The
return
loss,
S(1,1)
simulation
result
of
this
antenna
is
sho
wn
in
Figure
9a.
This
result
indicates
that
the
return
loss
is
lo
west
(
-19.3
dB)
at
near
of
the
operating
frequenc
y
of
2.422
2.42
GHz.
T
o
achie
v
e
circular
polarization
this
singly
fed
microstrip
antenna
w
orks
on
the
principle
of
detuning
de
generate
modes
of
the
symmetrical
square
patch
by
perturbation
of
diagonal
se
gments.
Thus,
the
field
of
a
single-point
fed
patch
can
be
resolv
ed
into
tw
o
orthogonal
de
generate
modes.
Proper
perturbation
se
gments
will
detune
the
frequenc
y
response
of
an
y
one
mode
such
that,
at
the
operating
frequenc
y
,
it
is
the
equal
amplitude
and
90
phase
dif
ference
with
respect
to
the
other
mode.
Hence,
the
tw
o
modes
satisfy
the
es
sential
conditions
for
CP
radiation.
The
detail
technical
description
of
this
operation
is
gi
v
en
in
[8].
Figure
9b
illustrates
the
Return
loss
,
S(1,1)
on
Smith
Chart.
This
graph
re
v
eals
that
the
antenna
is
circularly
polarized
as
there
is
a
cusp
(sharp
f
all
and
immediate
rise)
near
of
the
operating
frequenc
y
on
the
curv
e.
Note
the
dif
ference
between
the
curv
es
of
Figure
7b
(Linear
Polarization)
and
Figure
9b
(Circular
Polarization).
The
sudden
dip
in
the
curv
e
of
Figure
9b
indicates
that
tw
o
orthogonal
de
generate
modes
ha
v
e
formed,
and
the
y
are
resonating
in
the
aforementioned
operating
frequenc
y
.
Hence,
it
confirms
the
CP
radiation
of
the
antenna.
IJECE,
V
ol.
9,
No.
3,
June
2019
:
1902
–
1909
Evaluation Warning : The document was created with Spire.PDF for Python.
IJECE
ISSN:
2088-8708
r
1907
Ne
xt,
the
design
of
the
circularly
polarized
e
xtended
corner
square
microstrip
antenna
will
be
di
s-
cussed.
Here,
circular
polarization
is
also
obtained
by
a
small
perturbation
of
the
square
antenna
patch
of
Figure
6.
Figure
10
sho
ws
the
top
vie
w
and
side
vie
w
of
the
circular
sector
e
xtended
square
microstrip
antenna
with
CP
.
This
antenna
is
fed
by
coaxial
feeding
technique.
The
dimensions
are
also
mark
ed
in
the
Figure
10.
(a)
Return
loss,
S(1,1)
of
the
circular
sector
truncated
square
microstrip
antenna
with
circular
polarization
(b)
Return
loss,
S(1,1)
of
the
circular
sector
truncated
square
microstrip
antenna
with
circular
polarization
on
Smith
Chart
Figure
9.
S(1,1)
parameter
of
the
Crescent-Cut
circularly
polarized
antenna
Figure
10.
The
e
xtended
corner
microstrip
antenna
with
circular
polarization
The
return
loss,
S(1,1)
simulation
result
of
this
antenna
is
sho
wn
in
Figure
11a.
This
result
indic
ates
that
the
return
loss
is
lo
west
(
-29.3
dB)
at
near
of
the
operating
frequenc
y
of
2.429
2.43
GHz.
T
o
achie
v
e
circular
polarization
this
singly
fed
microstrip
antenna
w
orks
on
the
principle
of
detuning
de
generate
modes
of
the
symmetrical
square
patch
by
perturbation
of
diagonal
se
gments.
Thus,
the
field
of
a
single-point
fed
patch
can
be
resolv
ed
into
tw
o
orthogonal
de
generate
modes.
Proper
perturbation
se
gments
will
detune
the
frequenc
y
response
of
an
y
one
mode
such
that,
at
the
operating
frequenc
y
,
it
is
the
equal
amplitude
and
90
phase
dif
ference
with
respect
to
the
other
mode.
Hence,
the
tw
o
modes
satisfy
the
essential
conditions
for
CP
radiation.
The
detail
technical
description
of
this
operation
can
be
found
in
[8].
Figure
11b
illustrates
the
Return
loss,
S(1,1)
on
Smith
Chart.
This
graph
re
v
eals
that
the
antenna
is
circularly
polarized
as
there
is
a
cusp
(sharp
f
all
and
immediate
rise)
near
of
the
operating
frequenc
y
on
the
curv
e.
Note
the
dif
ference
betwe
en
the
curv
es
of
Figure
7b
(Linear
Polarization)
and
Figure
11b
(Circular
Polarization).
The
sudden
dip
in
the
curv
e
of
Figure
11b
indicates
that
tw
o
orthogonal
de
generate
modes
Single
feed
cir
cularly
polarized
cr
escent-cut
and
e
xtended...
(Mehdi
Hasan
Chowdhury)
Evaluation Warning : The document was created with Spire.PDF for Python.
1908
r
ISSN:
2088-8708
ha
v
e
formed,
and
the
y
are
resonating
in
the
aforementioned
operating
frequenc
y
.
Therefore,
it
v
erifies
the
CP
radiation
of
the
e
xtended
corner
antenna.
(a)
Return
loss,
S(1,1)
of
the
circular
sector
e
xtended
square
microstrip
antenna
with
circular
polarization
(b)
Return
loss,
S(1,1)
of
the
circular
sector
e
xtended
square
microstrip
antenna
with
circular
polarization
on
Smith
Chart
Figure
11.
S(1,1)
parameter
of
the
e
xtended
corner
circularly
polarized
antenna
4.
CONCLUSION
T
w
o
ne
w
single
feed
circularly
polarized
microstrip
antennas
at
ISM
frequenc
y
band
ha
v
e
been
intro-
duced
in
this
paper
.
Both
of
the
proposed
antennas
ha
v
e
high
g
ain.
At
operating
frequenc
y
,
the
e
xtended
corner
antenna
has
a
g
ain
of
5.226
dBi,
and
the
g
ain
of
the
crescent-cut
antenna
is
5.293
dBi.
These
antennas
ha
v
e
been
designed
and
optimized
by
using
Adv
anced
Design
System
(ADS).
In
future,
these
tw
o
antenna
concepts
can
be
combined
to
obtain
superior
performance.
Also,
unsymmetrical
slots
inside
the
radiating
patches
may
be
introduced.
As
these
antennas
are
tuned
at
ISM
band,
the
y
are
suitable
for
wireless
biotelemetry
applications.
REFERENCES
[1]
N.
F
.
G
¨
uler
and
E.
D.
¨
Ube
yli,
“Theory
and
applications
of
biotelemetry
,
”
J
ournal
of
Medical
Systems
,
v
ol.
26,
no.
2,
pp.
159–178,
2002.
[2]
H.
R.
Khaleel,
H.
M.
Al-Rizzo,
D.
G.
Ruck
er
,
and
T
.
A.
El
wi,
“W
earable
yagi
microstrip
antenna
for
telemedicine
applications,
”
in
Radio
and
W
ir
eless
Symposium
(R
WS),
2010
IEEE
.
IEEE,
2010,
pp.
280–283.
[3]
C.
H.
Doan
and
D.
G.
Bach,
“Design
and
f
abrication
of
rectifying
antenna
circuit
for
wireless
po
wer
transmission
system
operating
at
ism
band,
”
International
J
ournal
of
Electrical
and
Computer
Engineer
-
ing
(IJECE)
,
v
ol.
6,
no.
4,
p.
1522,
2016.
[4]
I.
Zahraoui,
A.
Errkik,
M.
Abounaima,
A.
T
ajmouati,
L.
Abdellaoui,
and
M.
Latrach,
“
A
ne
w
planar
multi-
band
antenna
for
gps,
ism
and
wimax
applications,
”
International
J
ournal
of
Electrical
and
Computer
Engineering
(IJECE)
,
v
ol.
7,
no.
4,
pp.
2018–2026,
2017.
[5]
Spectrum
Management
Committee,
“National
Frequenc
y
Allocation
Plan
(NF
AP),
”
2010.
[6]
C.
L.
Jackson,
“The
genesis
of
unlicensed
wireless
polic
y
,
”
info
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v
ol.
11,
no.
5,
2009.
[7]
S.
Samal,
S.
Dw
ari,
A.
Dutta,
and
S.
P
.
Reddy
,
“
A
microstrip
patch
antenna
for
biomedical
applications
at
2.45
ghz,
”
in
Computer
s
and
De
vices
for
Communication
(CODEC),
2012
5th
International
Confer
ence
on
.
IEEE,
2012,
pp.
1–4.
[8]
K.-L.
W
ong,
Compact
and
br
oadband
micr
ostrip
antennas
.
John
W
ile
y
&
Sons,
2004.
[9]
H.
J.
V
isser
,
Arr
ay
and
phased
arr
ay
antenna
basics
.
John
W
ile
y
&
Sons,
2006.
[10]
C.
A.
Ballanis,
Antenna
theory
analysis
and
design
.
John
W
ile
y
&
Sons,
1997.
[11]
S.
S.
Y
ang,
K.-F
.
Lee,
A.
A.
Kishk,
and
K.-M.
Luk,
“Design
and
study
of
wideband
single
feed
circularly
polarized
microstrip
antennas,
”
Pr
o
gr
ess
In
Electr
oma
gnetics
Resear
c
h
,
v
ol.
80,
pp.
45–61,
2008.
[12]
K.-F
.
T
ong
and
T
.-P
.
W
ong,
“Circularly
polarized
u-slot
ant
enna,
”
IEEE
T
r
ansactions
on
antennas
and
pr
opa
gation
,
v
ol.
55,
no.
8,
pp.
2382–2385,
2007.
[13]
H.
Iw
asaki,
“
A
circularly
polarized
small-size
microstrip
antenna
with
a
cross
slot,
”
IEEE
tr
ansactions
on
antennas
and
pr
opa
gation
,
v
ol.
44,
no.
10,
pp.
1399–1401,
1996.
IJECE,
V
ol.
9,
No.
3,
June
2019
:
1902
–
1909
Evaluation Warning : The document was created with Spire.PDF for Python.
IJECE
ISSN:
2088-8708
r
1909
[14]
J.-H.
Lu,
C.-L.
T
ang,
and
K.-L.
W
ong,
“Single-feed
slotted
equil
ateral-triangular
microstrip
antenna
for
circular
polar
ization,
”
IEEE
T
r
ansactions
on
antennas
and
pr
opa
gation
,
v
ol.
47,
no.
7,
pp.
1174–1178,
1999.
[15]
Q.
D.
Hossain,
M.
A.
Rahman,
and
M.
A.
Hossain,
“Dual
orthogonal
feed
circular
polarization
array
antenna
using
m
icrostrip
slot
feed
netw
ork,
”
International
J
ournal
of
Electrical
and
Computer
Engineer
-
ing
(IJECE)
,
v
ol.
5,
no.
5,
2015.
BIOGRAPHIES
OF
A
UTHORS
Mehdi
Hasan
Cho
wdhury
(MIEEE)
recei
v
ed
his
B.Sc.
and
M.Sc.
in
Electrical
and
Electronic
Engineering
from
the
Department
of
Electrical
and
Electronic
Engineering,
Chittagong
Uni
v
er
-
sity
of
Engineering
and
T
echnology
(CUET),
Bangladesh.
He
has
been
w
orking
there
as
a
f
aculty
member
in
that
same
department
since
2013.
At
present,
he
is
w
orking
as
an
Assistant
Profes-
sor
and
on
study
lea
v
e
to
pursue
his
Ph.D.
study
.
He
recei
v
ed
the
prestigious
Hong
K
ong
Ph.D.
Fello
wship
Scheme
(HKPFS)
in
2018
and
star
ted
his
doctoral
research
at
the
Department
of
Elec-
tronic
Engineering
in
the
City
Uni
v
ersity
of
Hong
K
ong.
His
research
interests
include
embedded
system
designs,
wireless
communications
and
biomedical
engineering.
Quazi
Delwar
Hossain
(MIEEE)
recei
v
ed
his
B.Sc.
de
gree
in
electrical
and
electronic
en-
gineering
from
Chittagong
Uni
v
ersity
of
Engineering
and
T
echnology
(CUET),
Chittagong,
Bangladesh,
in
2001.
He
obtained
Master
of
Engineering
de
gree
in
semiconductor
electronics
and
inte
gration
sciences
from
Hiroshima
Uni
v
ersity
,
Hiroshima,
Japan,
in
2007;
and
Ph.D.
de-
gree
in
microelectronics
from
the
Uni
v
ers
ity
of
T
rento,
T
rento,
Italy
,
in
2010.
During
his
Ph.D.
program,
he
als
o
spent
a
period
with
the
SOI
Group,
Bruno
K
essler
F
oundation,
T
rento,
Italy
as
a
Postgraduate
Researcher
.
From
2001,
he
w
as
with
CUET
as
a
f
aculty
member
.
Presently
he
is
w
orking
as
a
Professor
and
Head
at
the
Department
of
Electrical
and
Electronic
Engineering,
CUET
.
His
research
interests
include
image
sensors,
antenna
design
and
related
readout
circuit
simulation
and
e
xperimental
characterization
of
semiconductor
de
vices,
sensors
and
photo
v
oltaic
cells.
Md.
Azad
Hossain
(MIEEE)
recei
v
ed
the
B.Sc.
de
gree
in
Electrical
and
Electronic
Engineer
-
ing
from
Raj
shahi
Uni
v
ersity
of
Engineering
and
T
echnology
(R
UET),
Rajshahi,
Bangladesh,
in
2004.
He
got
Master
of
Engineering
de
gree
in
EEE
from
Sag
a
Uni
v
ersity
,
Sag
a,
Japan,
in
2010;
and
the
Ph.D.
de
gree
in
Science
and
Adv
anced
T
echnology
,
in
2013
from
the
same
Institute.
From
2013,
he
w
as
with
the
Department
of
Ele
ctronics
and
T
elecommunication
Engineering
at
Chittagong
Uni
v
ersity
of
Engineering
and
T
echnology
(CUET)
as
a
f
aculty
member
.
Presently
he
is
w
orking
as
an
Associate
Professor
at
CUET
.
His
research
interests
include
Micro
w
a
v
e
antenna
design
and
related
readout
circuit
simulation
and
e
xperimental
characterization.
Ray
Chak
Chung
Cheung
(MIEEE)
recei
v
ed
the
B.Eng.
(Hons)
and
M.Phil.
de
grees
in
computer
engineering
and
computer
science
&
engineering
from
the
Chinese
Uni
v
ersity
of
Hong
K
ong
(CUHK)
in
1999
and
2001
respecti
v
ely
,
and
the
DIC
and
Ph.D.
de
gree
in
computing
from
Imperial
Coll
e
ge
London
(IC)
in
2007.
After
completing
his
Ph.D.
study
,
he
recei
v
ed
the
Hong
K
ong
Croucher
F
oundation
Fello
wship
and
mo
v
ed
to
Los
Angeles,
in
the
Electrical
Engineering
department
at
UCLA,
where
he
spent
tw
o
years
with
Image
Communication
Lab
for
continu-
ing
his
research
w
ork.
He
is
currently
an
Associate
Professor
in
the
Departm
ent
of
Electronic
Engineering
at
the
City
Uni
v
ers
ity
of
Hong
K
ong
and
with
Digital
Systems
Lab
.
His
current
research
interests
include
cryptographic
hardw
are
designs
and
design
e
xploration
of
System-on-
Chip
(SoC)
designs
and
embedded
system
designs.
Single
feed
cir
cularly
polarized
cr
escent-cut
and
e
xtended...
(Mehdi
Hasan
Chowdhury)
Evaluation Warning : The document was created with Spire.PDF for Python.