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n
atin
g
at
2
.
4
5
GHz
.
2.
M
I
CRO
ST
RIP
P
AT
CH
AN
T
E
N
NA
DE
SI
G
N
T
h
e
g
eo
m
etr
ic
d
i
m
en
s
io
n
s
o
f
a
u
n
i
f
o
r
m
p
atch
a
n
te
n
n
a,
also
k
n
o
w
n
a
s
m
icr
o
s
tr
ip
an
ten
n
a
th
e
y
ca
lcu
lated
f
r
o
m
t
h
e
f
o
r
m
u
las
g
iv
e
n
i
n
[
2
1
]
.
Fo
r
r
ed
u
cin
g
th
e
s
ize
o
f
t
h
e
co
n
v
e
n
tio
n
a
l
an
t
en
n
a,
m
a
n
y
s
h
ap
ed
s
lo
ts
ar
e
in
tr
o
d
u
ce
d
i
n
th
e
p
at
ch
ar
e
d
e
m
o
n
s
tr
ated
in
t
h
e
Fi
g
u
r
e
1
.
C
o
n
s
eq
u
e
n
tl
y
,
th
e
n
e
w
a
n
te
n
n
a
h
as
a
v
er
y
co
m
p
ac
t
g
eo
m
etr
y
.
I
n
th
is
d
es
ig
n
,
th
e
s
u
b
s
tr
ate
F
R
-
4
h
ad
u
s
ed
d
u
e
to
its
lo
w
co
s
t
an
d
ea
s
y
f
ab
r
icatio
n
.
T
h
e
s
u
b
s
tr
ate
h
e
ig
h
t
is
1
.
6
m
m
,
t
h
e
d
ielec
tr
ic
co
n
s
tan
t
is
4
.
4
,
an
d
th
e
lo
s
s
tan
g
e
n
t
is
0
.
0
2
5
.
A
f
ter
m
a
n
y
s
er
ie
s
o
f
o
p
tim
izatio
n
b
y
u
s
in
g
C
ST
-
MW
s
o
lv
er
,
th
e
f
i
n
al
d
i
m
en
s
io
n
s
o
f
th
e
p
r
o
p
o
s
ed
an
ten
n
a
ar
e
g
iv
i
n
g
i
n
t
h
e
T
ab
le
1
.
T
h
e
s
i
m
u
lated
r
esu
lt
s
in
d
icate
th
at
t
h
e
an
ten
n
a
h
a
s
a
g
o
o
d
p
er
f
o
r
m
a
n
ce
in
ter
m
o
f
m
atc
h
i
n
g
in
p
u
t
i
m
p
ed
an
ce
-
1
7
.
0
6
d
B
,
g
ain
3
.
9
9
9
d
B
,
an
d
th
e
w
id
t
h
f
r
eq
u
en
c
y
b
an
d
is
ar
o
u
n
d
1
4
9
.
5
MH
z
at
5
.
8
GHz
.
(
a)
(
b
)
Fig
u
r
e
1
.
(
a)
Sch
e
m
atic
d
ia
g
r
am
o
f
m
icr
o
s
tr
ip
an
te
n
n
a
,
(
b
)
Si
m
u
lated
r
etu
r
n
lo
s
s
o
f
t
h
e
m
ic
r
o
s
tr
ip
p
atch
an
ten
n
a
r
eso
n
a
tin
g
at
5
.
8
GHz
T
ab
le
1
.
Dim
e
n
s
io
n
s
o
f
t
h
e
P
r
o
p
o
s
ed
Mic
r
o
s
tr
ip
P
atch
A
n
te
n
n
a
P
a
r
a
me
t
e
r
s
V
a
l
u
e
[
mm
]
P
a
r
a
me
t
e
r
s
V
a
l
u
e
[
mm
]
Lp
1
0
.
4
L
f
2
5
.
0
L
p
1
4
.
6
W
f
1
0
.
4
7
5
L
p
2
1
.
6
W
f
2
3
L
p
3
4
.
2
Wp
10
L
f
1
3
.
9
-
-
3.
P
RINT
E
D
F
O
UR
-
E
L
E
M
E
NT
S AN
T
E
NNA
ARRA
Y
T
ak
in
g
i
n
to
ac
co
u
n
t
th
e
a
n
te
n
n
a
d
esig
n
ed
a
n
d
d
escr
ib
ed
in
t
h
e
f
ir
s
t
s
ec
tio
n
,
w
e
h
a
v
e
d
esig
n
ed
a
n
an
ten
n
a
ar
r
a
y
i
n
o
r
d
er
to
in
cr
e
ase
th
e
g
ain
.
T
h
e
p
r
o
p
o
s
ed
an
t
en
n
a
ar
r
a
y
h
ad
d
esig
n
ed
b
y
u
s
in
g
lo
w
co
s
t
FR
-
4
s
u
b
s
tr
ate
(
1
7
0
x
6
0
m
m
2
)
.
T
h
e
w
h
o
le
ar
ea
o
f
t
h
e
r
ad
iati
n
g
ar
r
ay
i
s
1
4
7
.
6
4
x
4
1
.
9
9
m
m
2
.
T
h
e
d
i
m
e
n
s
io
n
s
ar
e
L
1
=1
0
.
8
9
m
m
,
L
2
=1
4
.
8
5
m
m
,
L
3
=5
.
8
5
m
m
,
w
1
=0
.
7
m
m
,
w
2
=2
.
1
m
m
,
w
3
=3
.
0
m
m
,
w
4
=0
.
7
m
m
,
w
5
=1
m
m
,
w
6
=3
m
m
,
w
7
=
0
.
4
7
5
m
m
an
d
d
3
=7
3
.
8
2
m
m
.
T
h
e
s
tr
u
ct
u
r
e
o
f
th
i
s
an
te
n
n
a
ar
r
a
y
as
s
h
o
w
n
in
F
ig
u
r
e
2
,
I
t
in
cl
u
d
es
f
o
u
r
p
atch
e
s
w
it
h
d
i
s
tan
ce
s
d
1
=4
5
.
8
8
m
m
i
n
o
n
e
d
ir
ec
tio
n
,
ad
d
s
to
th
at
th
e
d
i
s
tan
ce
b
et
w
ee
n
t
h
e
an
ten
n
a
s
ed
g
e
s
h
as
b
ee
n
s
ele
cted
to
b
e
d
2
=3
5
.
8
8
m
m
(
0
.
6
9
4
λ
5.
8GHz
)
,
w
h
er
e
λ
5.
8GHz
is
t
h
e
f
r
ee
s
p
ac
e
w
a
v
e
len
g
th
.
T
h
e
r
ad
iatin
g
ele
m
e
n
t
s
ar
e
ex
cited
th
r
o
u
g
h
s
i
m
p
le
co
r
p
o
r
ate
f
ee
d
ar
r
an
g
e
m
en
t.
T
h
i
s
f
ee
d
ar
r
an
g
e
m
e
n
t
Evaluation Warning : The document was created with Spire.PDF for Python.
I
n
t J
E
lec
&
C
o
m
p
E
n
g
I
SS
N:
2
0
8
8
-
8708
A
Min
ia
tu
r
e
Micr
o
s
t
r
ip
A
n
ten
n
a
A
r
r
a
y
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s
in
g
C
ir
cu
la
r
S
h
a
p
ed
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mb
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ell
fo
r
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(
A
h
med
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h
a
lo
u
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3795
co
n
s
is
ts
o
f
m
atc
h
in
g
tr
an
s
f
o
r
m
er
,
q
u
ar
ter
w
a
v
e
tr
an
s
f
o
r
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er
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λ
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p
o
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id
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etter
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ce
m
atc
h
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e
t
w
ee
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f
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d
a
n
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r
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d
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en
ts
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h
e
d
i
m
e
n
s
i
o
n
s
o
f
t
h
e
p
r
o
p
o
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ed
an
te
n
n
a
a
r
r
ay
h
ad
o
p
ti
m
ized
b
y
u
s
i
n
g
C
ST
Mic
r
o
w
a
v
e
St
u
d
io
elec
tr
o
m
a
g
n
etic
s
o
lv
er
.
T
h
e
an
ten
n
a
ar
r
a
y
h
a
s
a
r
eso
n
an
t
f
r
eq
u
en
c
y
o
f
5
.
8
GHz
,
w
h
ic
h
co
v
er
s
I
SM
b
a
n
d
ap
p
licatio
n
s
,
as s
h
o
w
n
i
n
F
ig
u
r
e
3.
Fig
u
r
e
2
.
T
o
p
-
v
ie
w
o
f
t
h
e
d
esi
g
n
ed
an
ten
n
a
ar
r
a
y
Fig
u
r
e
3
.
T
h
e
s
i
m
u
la
ted
r
ef
lec
tio
n
co
ef
f
icie
n
t v
er
s
u
s
f
r
eq
u
e
n
c
y
o
f
t
h
e
p
r
in
ted
an
te
n
n
a
ar
r
a
y
4.
CIRCU
L
AR
SH
AP
E
D
DU
M
B
B
E
L
L
(
CDG
S)
T
h
e
cir
cu
lar
s
h
ap
ed
d
u
m
b
b
e
ll
d
ef
ec
ted
g
r
o
u
n
d
s
tr
u
ct
u
r
e
(
C
DGS)
ar
e
co
m
p
o
s
ed
o
f
f
o
u
r
cir
cles
d
ef
ec
ted
ar
ea
s
: t
h
r
ee
cir
cle
s
l
i
n
k
ed
to
ea
ch
o
th
er
ar
r
an
g
ed
o
n
o
n
e
s
id
e,
a
n
d
t
h
e
s
in
g
u
lar
ci
r
cle
in
th
e
o
th
er
s
id
e
o
f
co
n
n
ec
ti
n
g
s
lo
t
e
tch
ed
b
et
w
ee
n
t
h
e
m
,
W
DGS1
x
L
DGS2
g
ap
s
a
n
d
a
n
ar
r
o
w
co
n
n
ec
ti
n
g
s
lo
t
w
id
e
etc
h
ed
ar
ea
s
in
b
ac
k
s
id
e
m
eta
llic
g
r
o
u
n
d
p
lan
e
as
s
h
o
w
n
i
n
Fi
g
u
r
e
4
(
a)
.
T
h
e
d
i
m
en
s
io
n
s
o
f
t
h
e
p
r
o
p
o
s
ed
cir
cu
lar
d
ef
ec
ted
g
r
o
u
n
d
s
tr
u
ct
u
r
e
ar
e
:
L
D
GS1
=
1
6
.
6
m
m
,
L
D
G
S2
=1
5
.
5
m
m
,
L
DGS3
=1
7
.
5
m
m
,
W
DGS1
=
1.
1
m
m
,
W
DGS2
=1
5
.
2
m
m
,
R
DGS1
=1
.
7
3
m
m
,
R
D
G
S2
=1
.
7
m
m
,
R
D
GS3
=2
.
1
m
m
an
d
R
DGS4
=
1
.
7
3
m
m
.
T
h
e
r
eso
n
an
t
f
r
eq
u
en
c
y
w
il
l
h
a
v
e
s
h
i
f
ted
b
y
v
ar
y
i
n
g
th
e
d
i
m
e
n
s
io
n
s
o
f
th
e
cir
c
u
lar
s
h
ap
ed
d
u
m
b
b
ell.
I
n
g
en
er
al,
t
h
e
eq
u
iv
ale
n
t
cir
c
u
it
o
f
t
h
e
C
D
GS
co
n
s
i
s
ts
o
f
an
i
n
d
u
ctan
ce
(
L
)
an
d
a
ca
p
ac
itan
ce
(
C
)
i
n
p
ar
allel
as
s
ee
n
i
n
Fig
u
r
e
4
(
b
)
[
2
2
]
.
I
n
ad
d
itio
n
,
th
e
v
al
u
es o
f
th
e
s
e
ele
m
en
t
s
ca
n
b
e
ca
lcu
lated
b
y
t
h
e
f
o
r
m
u
la
s
(
1
)
-
(
3
)
:
LC
0
0
k1
0
1
X
c
(
)
(
1
)
L
0
1
X=
ω
'
z
g
(
2
)
c
,
3
d
B
L
C
L
XX
'
1
||
(
3
)
Evaluation Warning : The document was created with Spire.PDF for Python.
I
SS
N
:
2
0
8
8
-
8708
I
n
t J
E
lec
&
C
o
m
p
E
n
g
,
Vo
l.
8
,
No
.
5
,
Octo
b
er
2
0
1
8
:
379
3
–
3
8
0
0
3796
w
h
er
e
ω
’
(
=1
)
,
g
1
(
=2
)
an
d
Z
0
(
=5
0
Ω
)
ar
e
n
o
r
m
alize
d
3
-
d
B
cu
to
f
f
f
r
eq
u
e
n
c
y
,
ele
m
e
n
t
v
alu
e
o
f
o
n
e
-
p
o
le
B
u
tter
w
o
r
t
h
p
r
o
to
ty
p
e
L
P
F,
an
d
p
o
r
t im
p
ed
an
ce
,
r
esp
ec
ti
v
el
y
,
an
d
:
-
1
/
2
0
k
1
k
1
ω
=
(
L
C
)
.
Fig
u
r
e
4
.
(
a)
C
DGS
u
n
it:
C
ir
cu
lar
s
h
ap
ed
d
u
m
b
b
ell
u
n
it
,
(
b
)
E
q
u
iv
ale
n
t c
ir
cu
i
t o
f
th
e
m
icr
o
s
tr
ip
lin
e
w
it
h
u
n
it
C
DGS,
(
c
)
B
u
tter
w
o
r
t
h
p
r
o
to
ty
p
e
o
f
o
n
e
-
p
o
le
L
P
F [
18
]
5.
M
I
CRO
ST
RIP
AN
T
E
N
NA
ARRA
Y
W
I
T
H
CD
G
S
T
h
e
g
r
o
u
n
d
p
la
n
o
f
th
e
an
ten
n
a
ar
r
ay
h
a
s
d
ef
ec
ted
b
y
u
s
i
n
g
a
cir
cu
lar
s
h
ap
ed
d
u
m
b
b
ell
p
r
esen
ted
i
n
Fig
u
r
e
4
(
a)
to
s
h
if
t
t
h
e
r
eso
n
an
ce
f
r
eq
u
e
n
c
y
f
r
o
m
5
.
8
GHz
to
2
.
4
5
GHz
w
it
h
o
u
t
ch
a
n
g
i
n
g
th
e
g
eo
m
etr
i
c
d
i
m
en
s
io
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ato
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.
Evaluation Warning : The document was created with Spire.PDF for Python.
I
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t J
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&
C
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p
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I
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N:
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8
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A
Min
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Micr
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r
r
a
y
u
s
in
g
C
ir
cu
la
r
S
h
a
p
ed
Du
mb
b
ell
fo
r
…
(
A
h
med
G
h
a
lo
u
a
)
3799
RE
F
E
R
E
NC
E
S
[1
]
P
.
Ku
m
a
r,
e
t
a
l
.
,
“
F
o
rm
u
latio
n
o
f
S
ize
Re
d
u
c
ti
o
n
T
e
c
h
n
iq
u
e
i
n
M
i
c
ro
strip
Circu
it
s
b
y
u
sin
g
DG
S
a
n
d
DM
S
”
,
2
0
0
8
In
ter
n
a
t
io
n
a
l
C
o
n
fer
e
n
c
e
o
n
Rec
e
n
t
A
d
v
a
n
c
e
s in
M
icr
o
wa
v
e
T
h
e
o
r
y
a
n
d
Ap
p
li
c
a
ti
o
n
s,
J
a
i
p
u
r
,
2
0
0
8
,
p
p
.
8
6
1
-
8
6
4
.
[2
]
M
.
U.
Kh
a
n
,
e
t
a
l
.
,
“
M
icro
stri
p
p
a
tch
a
n
ten
n
a
m
in
iat
u
risa
ti
o
n
tec
h
n
iq
u
e
s:
a
re
v
ie
w
”
,
in
IET
M
icr
o
wa
v
e
s,
An
ten
n
a
s
&
Pro
p
a
g
a
ti
o
n
,
v
o
l
.
9
,
n
o
.
9
,
p
p
.
9
1
3
-
9
2
2
,
2
0
1
5
.
[3
]
F
.
F
a
rz
a
m
i,
e
t
a
l
.
,
“
M
in
iatu
riza
ti
o
n
o
f
a
M
icro
strip
A
n
ten
n
a
Us
in
g
a
Co
m
p
a
c
t
a
n
d
T
h
i
n
M
a
g
n
e
to
-
Die
lec
tri
c
S
u
b
stra
te”
,
i
n
IEE
E
An
ten
n
a
s a
n
d
W
ire
les
s P
ro
p
a
g
a
ti
o
n
L
e
tt
e
r
s,
v
o
l.
1
0
,
p
p
.
1
5
4
0
-
1
5
4
2
,
2
0
1
1
.
[4
]
Y.
H
w
a
n
g
,
e
t
a
l
.
,
“
P
la
n
a
r
I
n
v
e
rted
F
A
n
ten
n
a
L
o
a
d
e
d
w
it
h
Hig
h
P
e
rm
it
ti
v
it
y
M
a
teria
l”,
in
El
e
c
tro
n
ics
L
e
tt
e
rs
,
v
o
l.
3
1
,
n
o
.
2
0
,
p
p
.
1
7
1
0
-
1
7
1
2
,
2
8
S
e
p
1
9
9
5
.
[5
]
M
.
Ya
n
g
,
e
t
a
l
.
,
“
M
in
iatu
rize
d
P
a
tch
A
n
ten
n
a
W
it
h
G
ro
u
n
d
e
d
S
tri
p
s”
,
in
IEE
E
T
r
a
n
sa
c
t
io
n
s
o
n
An
ten
n
a
s
a
n
d
Pro
p
a
g
a
ti
o
n
,
v
o
l
.
6
3
,
n
o
.
2
,
p
p
.
8
4
3
-
8
4
8
,
F
e
b
.
2
0
1
5
.
[6
]
W
o
n
g
,
Kin
-
L
u
,
Co
m
p
a
c
t
a
n
d
Br
o
a
d
b
a
n
d
M
icro
str
ip
A
n
ten
n
a
s,
J
o
h
n
W
il
e
y
&
S
o
n
s,
2
0
0
4
.
[7
]
C.
Y.
C
h
iu
,
e
t
a
l
.
,
“
A
T
u
n
a
b
le
Via
-
P
a
tch
L
o
a
d
e
d
P
I
F
A
W
it
h
S
ize
Re
d
u
c
ti
o
n
”
,
in
IEE
E
T
ra
n
sa
c
ti
o
n
s
o
n
A
n
ten
n
a
s
a
n
d
Pro
p
a
g
a
t
io
n
,
v
o
l.
5
5
,
n
o
.
1
,
p
p
.
6
5
-
7
1
,
Ja
n
.
2
0
0
7
.
[8
]
P
.
K.
S
i
n
g
h
a
l
a
n
d
Bim
a
l
G
a
r
g
,
“
De
sig
n
a
n
d
Ch
a
ra
c
teriz
a
ti
o
n
o
f
Co
m
p
a
c
t
M
icro
strip
P
a
tc
h
A
n
ten
n
a
Us
in
g
“
S
p
l
it
Rin
g
”
S
h
a
p
e
d
M
e
tam
a
teri
a
l
S
tru
c
tu
re
”,
In
ter
n
a
ti
o
n
a
l
J
o
u
r
n
a
l
o
f
El
e
c
tr
ica
l
a
n
d
C
o
mp
u
ter
En
g
i
n
e
e
rin
g
(
IJ
ECE
)
,
v
o
l.
2
,
n
o
.
5
,
p
p
.
6
5
5
-
6
6
2
,
Oc
to
b
e
r
2
0
1
2
.
[9
]
A.
Bo
u
tejd
a
r
,
e
t
a
l
., “
De
sig
n
a
n
d
Im
p
ro
v
e
m
e
n
t
o
f
a
Co
m
p
a
c
t
Ba
n
d
p
a
ss
F
il
ter u
si
n
g
DG
S
Tec
h
n
iq
u
e
f
o
r
WL
A
N an
d
W
iM
A
X
A
p
p
li
c
a
ti
o
n
s
”,
T
EL
KO
M
NIKA
(
T
e
lec
o
mm
u
n
ica
ti
o
n
,
Co
mp
u
ti
n
g
,
El
e
c
tro
n
ics
a
n
d
C
o
n
tr
o
l
)
,
v
o
l.
15
,
n
o
.
3
,
p
p
.
1
1
3
7
-
1
1
4
4
,
S
e
p
tem
b
e
r
2
0
1
7
.
[1
0
]
C.
Ku
m
a
r
a
n
d
D.
G
u
h
a
,
“
Na
tu
re
o
f
Cro
ss
-
P
o
lariz
e
d
Ra
d
iati
o
n
s
f
ro
m
P
ro
b
e
-
F
e
d
Circu
lar
M
icro
strip
A
n
ten
n
a
s
a
n
d
T
h
e
ir
S
u
p
p
re
ss
io
n
Us
in
g
Dif
fe
re
n
t
G
e
o
m
e
tri
e
s
o
f
D
e
f
e
c
ted
G
ro
u
n
d
S
tr
u
c
tu
re
(DG
S
)”
,
in
IEE
E
T
ra
n
sa
c
ti
o
n
s
o
n
An
ten
n
a
s
a
n
d
Pro
p
a
g
a
t
io
n
,
v
o
l
.
6
0
,
n
o
.
1
,
p
p
.
9
2
-
1
0
1
,
Ja
n
.
2
0
1
2
.
[1
1
]
D.
G
u
h
a
,
e
t
a
l
.
,
“
M
icro
stri
p
P
a
tc
h
A
n
ten
n
a
w
it
h
De
f
e
c
ted
G
ro
u
n
d
S
tr
u
c
tu
re
f
o
r
Cro
ss
P
o
lariz
a
ti
o
n
S
u
p
p
re
ss
i
o
n
”
,
in
IEE
E
An
ten
n
a
s a
n
d
W
ire
les
s P
ro
p
a
g
a
t
io
n
L
e
tt
e
rs
,
v
o
l.
4
,
n
o
.
1
,
p
p
.
4
5
5
-
4
5
8
,
2
0
0
5
.
[1
2
]
F
.
G
.
Zh
u
,
e
t
a
l
.
,
“
Re
d
u
c
t
io
n
o
f
M
u
tu
a
l
Co
u
p
li
n
g
b
e
tw
e
e
n
Clo
se
l
y
-
p
a
c
k
e
d
A
n
ten
n
a
El
e
m
e
n
ts
u
sin
g
De
f
e
c
ted
G
ro
u
n
d
S
tru
c
tu
re
”
,
in
E
lec
tro
n
ics
L
e
tt
e
rs
,
v
o
l.
4
5
,
n
o
.
1
2
,
p
p
.
6
0
1
-
6
0
2
,
J
u
n
e
4
2
0
0
9
.
[1
3
]
S
.
He
k
a
l,
e
t
a
l
.
,
“
A
No
v
e
l
T
e
c
h
n
iq
u
e
f
o
r
Co
m
p
a
c
t
S
ize
W
irele
s
s
P
o
w
e
r
T
ra
n
s
f
e
r
A
p
p
li
c
a
ti
o
n
s
Us
in
g
De
fe
c
ted
G
ro
u
n
d
S
tr
u
c
tu
re
s
”
,
in
I
EE
E
T
r
a
n
sa
c
ti
o
n
s
o
n
M
icr
o
wa
v
e
T
h
e
o
r
y
a
n
d
T
e
c
h
n
iq
u
e
s
,
v
o
l.
6
5
,
n
o
.
2
,
p
p
.
5
9
1
-
5
9
9
,
F
e
b
.
2
0
1
7
.
[1
4
]
S
.
Bisw
a
s,
e
t
a
l
.
,
“
Co
n
tro
l
o
f
Hig
h
e
r
Ha
r
m
o
n
ics
a
n
d
T
h
e
ir
Ra
d
i
a
ti
o
n
s
i
n
M
icr
o
strip
A
n
ten
n
a
s
Us
in
g
Co
m
p
a
c
t
De
fe
c
ted
G
ro
u
n
d
S
tru
c
tu
re
s”
,
in
IEE
E
T
ra
n
sa
c
ti
o
n
s
o
n
An
te
n
n
a
s
a
n
d
Pro
p
a
g
a
ti
o
n
,
v
o
l.
6
1
,
n
o
.
6
,
p
p
.
3
3
4
9
-
3
3
5
3
,
Ju
n
e
2
0
1
3
.
[1
5
]
D.
b
.
Ho
u
,
e
t
a
l
.
,
“
El
im
in
a
ti
o
n
o
f
S
c
a
n
Bli
n
d
n
e
ss
w
it
h
Co
m
p
a
c
t
D
e
fe
c
ted
G
ro
u
n
d
S
tru
c
tu
re
s
in
M
ic
ro
strip
P
h
a
se
d
A
rra
y
”
,
in
IET
M
icr
o
wa
v
e
s,
A
n
ten
n
a
s
&
Pro
p
a
g
a
ti
o
n
,
v
o
l.
3
,
n
o
.
2
,
p
p
.
2
6
9
-
2
7
5
,
M
a
rc
h
2
0
0
9
.
[1
6
]
A
.
Orte
g
a
,
e
t
a
l
.
,
“
De
sig
n
o
f
L
o
w
-
p
a
ss
M
icro
strip
F
il
ters
b
a
se
d
o
n
De
fe
c
ted
G
ro
u
n
d
S
tru
c
t
u
re
”
,
2
0
1
1
S
BM
O/IE
E
E
M
T
T
-
S
In
ter
n
a
ti
o
n
a
l
M
icr
o
wa
v
e
a
n
d
Op
t
o
e
lec
tro
n
ics
Co
n
fer
e
n
c
e
(IM
OC 2
0
1
1
)
,
Na
tal,
2
0
1
1
,
p
p
.
6
9
-
74.
[1
7
]
L
iu
,
e
t
a
l
.,
“
A
Ne
w
P
a
ra
m
e
ter
-
E
x
trac
ti
o
n
M
e
th
o
d
f
o
r
D
G
S
a
n
d
it
s
A
p
p
li
c
a
ti
o
n
t
o
th
e
L
o
w
-
P
a
ss
F
i
lt
e
r
”,
Active
a
n
d
Pa
ss
ive
El
e
c
tro
n
ic C
o
m
p
o
n
e
n
ts
,
2
0
0
4
,
v
o
l.
2
7
,
n
o
.
2
,
p
p
.
1
1
9
-
1
2
3
.
[1
8
]
D.
A
h
n
,
e
t
a
l
.
,
“
A
D
e
sig
n
o
f
th
e
L
o
w
-
P
a
ss
F
il
ter
u
sin
g
th
e
No
v
e
l
M
icro
s
tri
p
De
f
e
c
ted
G
ro
u
n
d
S
tru
c
tu
re
”
,
in
IEE
E
T
ra
n
sa
c
ti
o
n
s
o
n
M
icr
o
wa
v
e
T
h
e
o
ry
a
n
d
T
e
c
h
n
i
q
u
e
s
,
v
o
l.
4
9
,
n
o
.
1
,
p
p
.
8
6
-
9
3
,
Ja
n
2
0
0
1
.
[1
9
]
C.
S
h
e
k
h
a
r,
e
t
a
l
.
,
“
A
p
p
li
c
a
ti
o
n
o
f
2
D
De
fe
c
ted
G
ro
u
n
d
S
tr
u
c
t
u
r
e
s
in
M
icro
stri
p
L
in
e
s”
,
2
0
1
3
I
E
EE
In
ter
n
a
ti
o
n
a
l
Co
n
fer
e
n
c
e
o
n
El
e
c
tro
n
ics
,
Co
mp
u
ti
n
g
a
n
d
Co
mm
u
n
ica
t
io
n
T
e
c
h
n
o
lo
g
ies
,
Ba
n
g
a
lo
re
,
2
0
1
3
,
p
p
.
1
-
4
.
[2
0
]
Ch
u
l
-
S
o
o
Kim
,
e
t
a
l
.
,
“
E
q
u
iv
a
le
n
t
Circu
it
M
o
d
e
ll
in
g
o
f
S
p
iral
D
e
fe
c
ted
G
ro
u
n
d
S
tru
c
t
u
re
f
o
r
M
i
c
ro
strip
L
in
e
”
,
in
El
e
c
tro
n
ics
L
e
tt
e
rs
,
v
o
l.
3
8
,
n
o
.
1
9
,
p
p
.
1
1
0
9
-
1
1
1
0
,
1
2
S
e
p
2
0
0
2
.
[2
1
]
L
o
w
Ch
in
g
Yu
a
n
d
M
u
h
a
m
m
a
d
Ra
m
lee
K
a
m
a
ru
d
in
,
“
5
G
F
ix
e
d
Be
a
m
S
w
it
c
h
in
g
o
n
M
i
c
ro
strip
P
a
tc
h
A
n
ten
n
a
”,
In
ter
n
a
t
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ss
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v
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m
icro
w
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v
e
e
le
c
tro
n
ic circ
u
it
s.
Evaluation Warning : The document was created with Spire.PDF for Python.