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,
a
n
d
it
is
n
ec
es
s
ar
y
to
co
n
s
id
er
t
h
e
p
lace
m
e
n
t
an
d
o
r
ien
tatio
n
o
f
t
h
ese
an
ten
n
a
s
.
Op
ti
m
izi
n
g
t
h
e
g
ai
n
an
d
p
er
f
o
r
m
a
n
ce
o
f
5
G
an
ten
n
a
s
ca
n
b
e
ac
co
m
p
lis
h
ed
b
y
ap
p
l
y
i
n
g
m
ac
h
in
e
lear
n
in
g
(
ML
)
tech
n
iq
u
e
s
.
T
h
e
co
m
p
lex
an
d
ev
er
-
c
h
a
n
g
i
n
g
n
a
tu
r
e
o
f
w
ir
eless
n
et
w
o
r
k
s
ca
n
b
e
b
ette
r
m
an
a
g
ed
w
i
th
th
e
h
e
lp
o
f
t
h
e
s
e
s
tr
ate
g
ies,
w
h
ich
ca
n
also
i
m
p
r
o
v
e
t
h
e
s
y
s
te
m
’
s
o
v
er
all
p
er
f
o
r
m
a
n
ce
.
W
h
en
atte
m
p
ti
n
g
to
p
r
ed
ict
an
te
n
n
a
g
ai
n
w
it
h
a
r
eg
r
es
s
io
n
m
o
d
el
,
it
is
n
ec
e
s
s
ar
y
to
u
s
e
p
r
ev
io
u
s
d
ata
o
n
a
n
ten
n
a
f
ea
t
u
r
es
an
d
n
et
w
o
r
k
cir
cu
m
s
tan
ce
s
to
tr
ain
a
m
ac
h
i
n
e
-
le
ar
n
in
g
m
o
d
el.
Giv
e
n
n
e
w
d
ata
to
b
e
in
p
u
t,
th
e
tr
ain
ed
m
o
d
el
ca
n
t
h
en
m
a
k
e
p
r
ed
ictio
n
s
r
eg
ar
d
in
g
t
h
e
g
ain
o
f
an
an
ten
n
a.
T
h
is
r
esear
ch
ex
a
m
i
n
es
a
n
d
co
n
tr
asts
m
an
y
c
h
ar
ac
ter
is
t
ic
s
,
in
clu
d
i
n
g
r
eso
n
an
ce
f
r
eq
u
en
c
y
,
s
ize,
b
an
d
w
id
t
h
,
g
ai
n
,
i
s
o
latio
n
co
m
p
o
n
en
t
ca
r
r
ier
leak
ag
e
(
C
C
L
)
,
an
d
e
f
f
ic
ien
c
y
.
Desp
ite
i
t
s
co
m
p
ac
t
s
ize,
t
h
e
s
u
g
g
e
s
ted
an
te
n
n
a
e
x
h
ib
its
e
x
ce
p
tio
n
al
is
o
latio
n
an
d
g
ai
n
an
d
o
f
f
er
s
th
e
w
id
e
s
t
b
an
d
wid
th
.
T
h
e
co
m
p
u
ter
s
i
m
u
lat
io
n
tec
h
n
o
lo
g
y
(
C
ST
)
s
i
m
u
lat
io
n
s
d
e
m
o
n
s
tr
ate
a
g
ai
n
o
f
8
.
8
7
5
d
B
,
w
h
ic
h
ex
ce
ed
s
th
e
g
ai
n
s
r
ep
o
r
ted
in
th
e
liter
at
u
r
e
o
f
7
.
9
d
B
,
4
.
8
5
d
B
,
1
.
8
3
d
B
,
8
.
1
d
B
,
8
.
2
d
B
,
an
d
5
.
3
d
B
[
7
]
-
[
1
2
]
.
B
ased
o
n
C
ST
an
al
y
s
i
s
,
th
e
s
u
g
g
e
s
ted
d
esig
n
h
as
a
b
an
d
w
id
th
o
f
ar
o
u
n
d
1
1
GHz
,
h
ig
h
er
th
an
th
e
b
an
d
w
id
th
s
clai
m
ed
b
y
s
e
v
er
al
s
o
u
r
ce
s
,
r
an
g
i
n
g
f
r
o
m
1
.
2
GHz
to
6
GHz
.
T
h
e
p
r
o
p
o
s
ed
d
esig
n
d
e
m
o
n
s
tr
ates
i
s
o
latio
n
v
al
u
es
b
ey
o
n
d
2
7
d
B
,
in
co
n
tr
ast
to
th
e
is
o
latio
n
v
a
lu
es
o
f
2
8
d
B
,
2
4
d
B
,
2
0
d
B
,
an
d
2
2
d
B
r
ep
o
r
ted
in
th
e
r
ef
er
e
n
ce
w
o
r
k
s
[
7
]
-
[
9
]
,
[
1
2
]
.
T
h
e
p
r
o
p
o
s
ed
MI
MO
an
ten
n
a
p
er
f
o
r
m
s
w
ell,
w
i
th
a
n
er
r
o
r
co
r
r
ec
tio
n
co
d
e
(
E
C
C
)
o
f
less
th
an
0
.
0
0
0
3
an
d
a
d
iv
er
s
it
y
g
ain
(
DG)
ab
o
v
e
9
.
9
9
d
B
.
T
h
e
ef
f
icie
n
c
y
o
f
th
e
p
r
o
p
o
s
ed
MI
MO
an
ten
n
a
is
9
8
.
8
5
9
%,
w
h
i
le
th
e
r
ef
er
en
ce
w
o
r
k
s
[
8
]
,
[
1
0
]
,
[
1
2
]
h
av
e
e
f
f
icie
n
cies
o
f
8
5
%,
7
6
%,
an
d
9
0
%,
r
esp
ec
tiv
el
y
.
T
h
e
s
o
u
r
ce
s
d
o
n
o
t
u
til
ize
th
e
r
esis
to
r
,
in
d
u
cto
r
,
an
d
ca
p
ac
i
to
r
(
R
L
C
)
eq
u
iv
ale
n
t
cir
c
u
it
f
in
d
in
g
s
e
s
s
e
n
tial
to
th
e
p
r
o
v
id
in
g
ar
c
h
itect
u
r
e.
T
h
e
s
u
g
g
ested
d
esi
g
n
b
r
o
ad
ly
s
e
r
v
ices
ML
,
a
co
n
ce
p
t
th
a
t
n
ee
d
s
a
m
o
r
e
p
r
ec
is
e
d
ef
in
i
tio
n
i
n
th
e
r
ele
v
an
t liter
a
tu
r
e.
2.
DE
S
I
G
N
M
E
T
H
O
D
I
n
th
i
s
s
ec
tio
n
,
w
e
w
il
l
ex
p
lo
r
e
th
e
g
eo
m
e
tr
ical
co
n
s
tr
u
ctio
n
o
f
th
e
s
in
g
le
-
ele
m
e
n
t
3
8
GHz
an
ten
n
a
th
at
h
as
b
ee
n
p
r
o
p
o
s
ed
f
o
r
u
s
e.
W
e
w
ill
id
en
ti
f
y
th
e
m
o
s
t
s
u
i
tab
le
d
esig
n
p
ar
a
m
eter
s
to
co
n
s
id
er
w
h
ile
d
esig
n
in
g
t
h
is
a
n
ten
n
a.
T
h
is
w
il
l
g
i
v
e
u
s
a
d
etailed
p
er
ce
p
t
io
n
o
f
th
e
a
n
ten
n
a
’
s
p
h
y
s
ica
l
s
tr
u
ct
u
r
e
an
d
h
o
w
it
h
as
b
ee
n
o
p
ti
m
ized
to
p
er
f
o
r
m
at
its
b
est.
2
.
1
.
Sin
g
le
ele
m
ent
T
h
e
an
ten
n
a
is
m
ad
e
s
p
ec
i
f
ic
all
y
to
w
o
r
k
at
a
f
r
eq
u
e
n
c
y
o
f
3
8
GHz
.
Fi
g
u
r
e
1
s
h
o
w
s
t
h
e
d
etailed
co
n
s
tr
u
ct
io
n
o
f
o
u
r
p
r
o
p
o
s
ed
s
in
g
le
-
ele
m
e
n
t
an
te
n
n
a.
Fig
u
r
e
1
(
a
)
illu
s
tr
ates
th
e
f
r
o
n
t
s
i
d
e,
s
h
o
w
ca
s
i
n
g
th
e
k
e
y
d
esi
g
n
f
ea
t
u
r
es
an
d
s
tr
u
ct
u
r
al
co
m
p
o
n
e
n
t
s
.
Me
a
n
w
h
ile,
Fig
u
r
e
1
(
b
)
p
r
esen
ts
t
h
e
b
ac
k
s
id
e,
h
i
g
h
li
g
h
t
in
g
th
e
g
r
o
u
n
d
p
lan
e
a
n
d
o
th
er
r
elev
an
t
ele
m
en
t
s
.
Si
n
g
le
-
ele
m
e
n
t
an
ten
n
a
d
esi
g
n
i
s
t
h
e
th
o
u
g
h
t
o
f
m
ak
i
n
g
an
d
co
m
p
ac
ti
n
g
a
n
ten
n
a
s
izes
[
1
3
]
.
W
e
p
ick
a
d
ielec
tr
ic
co
m
p
o
n
en
t
id
en
ti
f
ied
a
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8
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l
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,
w
it
h
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i
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io
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o
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7
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.
5
7
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3
.
T
h
e
s
p
ec
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icatio
n
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o
f
o
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r
s
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g
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e
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ted
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n
n
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o
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ws:
t
h
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atch
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e
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atch
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th
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.
8
8
8
8
9
m
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an
d
th
e
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ick
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es
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t)
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h
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atch
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f
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7
m
m
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a
n
d
f
l=3
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6
m
m
.
(
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(
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Fig
u
r
e
1
.
P
r
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u
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ate
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ea
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i
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r
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y
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ten
n
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(
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b
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u
r
e
2
.
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w
o
f
p
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o
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ed
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r
r
ay
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n
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n
n
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a)
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r
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(
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3
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M
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p
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n
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io
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tech
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h
e
MI
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d
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1
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5
×
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1
.
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5
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m
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(
L
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atter
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ter
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[
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I
n
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r
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3
,
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te
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r
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3
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t t
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e
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Desig
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o
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k
3.
RE
SU
L
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,
A
NALY
SI
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,
AND
CO
M
P
ARIS
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N
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ir
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eh
av
io
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3
.
1
.
P
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ent
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Du
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ter
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−
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f
f
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y
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en
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m
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g
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ip
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t r
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g
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b
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in
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t
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t
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r
eq
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en
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y
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−
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h
a
n
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in
g
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v
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p
atch
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s
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atch
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e
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h
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h
as
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8
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8
9
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atc
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m
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ct
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atch
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ar
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eter
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ta
n
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w
id
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g
f
r
o
m
3
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m
to
4
.
5
m
m
w
er
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.
Fig
u
r
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4
(
c
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s
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o
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atch
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f
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(
a)
(
b
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(
c)
Fig
u
r
e
4
.
Sin
g
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e
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o
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th
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t f
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if
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a)
f
ee
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(
b
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d
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c)
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atch
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3
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2
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Ref
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icient
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Fi
g
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4
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t
w
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en
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ies ar
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n
d
3
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GHz
.
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ir
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s
.
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th
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en
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ies
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e
en
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y
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lar
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en
c
y
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h
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m
ea
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d
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n
d
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at
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4
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g
u
r
e
5
(
a
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h
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.
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288
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ten
n
a
co
n
v
er
t
s
in
p
u
t
p
o
w
er
in
to
r
ad
iated
p
o
w
er
[
2
1
]
.
Ou
r
an
ten
n
a
’
s
h
i
g
h
e
f
f
icie
n
c
y
o
f
9
8
.
8
5
9
%
r
ea
s
s
u
r
es
th
e
au
d
ie
n
ce
o
f
it
s
p
er
f
o
r
m
a
n
ce
i
n
a
r
eliab
le
w
ir
eless
co
m
m
u
n
ica
tio
n
s
y
s
te
m
.
Fi
g
u
r
e
7
illu
s
tr
ates
t
h
e
p
er
f
o
r
m
a
n
ce
o
f
t
h
e
p
r
o
p
o
s
ed
MI
MO
an
ten
n
a
in
te
r
m
s
o
f
g
ai
n
an
d
ef
f
icie
n
c
y
.
Fi
g
u
r
e
7
(
a)
p
r
esen
ts
th
e
r
ef
lecti
o
n
an
d
tr
an
s
m
is
s
io
n
co
ef
f
icie
n
t
s
,
w
h
i
le
Fi
g
u
r
e
7
(
b
)
s
h
o
w
s
t
h
e
g
a
in
a
n
d
r
ad
iatio
n
ef
f
icien
c
y
.
T
ab
le
1
.
P
er
f
o
r
m
a
n
ce
co
m
p
ar
i
s
o
n
w
it
h
th
e
r
ec
e
n
t p
u
b
lis
h
ed
w
o
r
k
R
e
f
.
[
7
]
[
8
]
[
9
]
[
1
0
]
[
1
1
]
[
1
2
]
P
r
o
p
o
se
d
fr
38
38
38
38
37
2
8
/
3
8
38
B
a
n
d
w
i
d
t
h
1
.
2
3
.
3
8
2
1
.
4
6
1
.
9
,
5
.
5
1
1
.
9
4
5
N
o
o
f
p
o
r
t
4
2
2
1
1
2
4
D
i
me
n
si
o
n
(
mm
2
)
2
.
5
3
×
3
.
0
4
λο
5
.
4
4
×
3
.
1
6
λο
3
.
2
9
×
1
.
7
7
λο
NA
NA
2
7
.
6
5
×
1
2
3
1
.
7
5
×
3
1
.
7
5
G
a
i
n
(
d
B
)
7
.
9
4
.
8
5
1
.
8
3
8
.
1
8
.
2
5
.
2
/
5
.
3
8
.
8
7
5
Ef
f
i
c
i
e
n
c
y
(
%)
85
NA
76
NA
90
NA
9
8
.
8
I
so
l
a
t
i
o
n
(
d
B
)
28
>
2
4
>
2
0
NA
NA
3
0
/
2
2
2
7
.
6
2
7
EC
C
<
0
.
0
0
1
NA
0
.
0
0
1
NA
NA
<
1
0
-
5
DG
NA
NA
NA
NA
NA
9
.
9
9
9
.
9
9
9
8
M
a
t
e
r
i
a
l
R
o
g
e
r
s
R
T
5
8
8
0
F
R
4
R
o
g
e
r
s
R
T
5
8
8
0
R
o
g
e
r
s
R
O
3
0
0
3
R
o
g
e
r
s
R
T
5
8
8
0
R
o
g
e
r
s
R
O
4
0
0
3
R
o
g
e
r
s
R
T
5
8
8
0
R
L
C
e
q
u
i
v
a
l
e
n
t
c
i
r
c
u
i
t
No
No
No
No
No
No
Y
es
(
a)
(
b
)
Fig
u
r
e
7
.
Vie
w
o
f
th
e
MI
MO
an
ten
n
a;
(
a)
r
ef
lectio
n
an
d
tr
a
n
s
m
i
s
s
io
n
co
e
f
f
icien
t a
n
d
(
b
)
g
ain
a
n
d
r
ad
iatio
n
ef
f
icien
c
y
4.
CURR
E
NT
D
I
ST
RIB
UT
I
O
N
O
F
T
H
E
DE
SI
G
N
E
D
AN
T
E
N
NA
Fig
u
r
e
8
(
a)
s
h
o
w
s
t
h
at
a
s
in
g
l
e
elem
e
n
t
’
s
m
ax
i
m
u
m
s
u
r
f
ac
e
cu
r
r
en
t
d
en
s
it
y
(
5
2
1
.
0
9
2
A
/
m
)
h
ap
p
en
s
at
a
f
r
eq
u
en
c
y
o
f
3
8
GHz
.
T
h
e
s
tr
o
n
g
est
s
u
r
f
ac
e
c
u
r
r
en
t
s
h
o
w
s
n
ea
r
th
e
f
ee
d
lin
e
an
d
s
lo
ts
.
B
y
3
8
GHz
,
Fig
u
r
e
8
(
b
)
s
h
o
w
s
t
h
e
1
×2
ar
r
ay
ele
m
en
ts
’
p
ea
k
s
u
r
f
ac
e
cu
r
r
en
t
d
en
s
it
y
o
f
1
5
9
.
3
7
1
A
/
m
.
T
h
e
p
atch
,
co
n
n
ec
to
r
,
an
d
f
ee
d
li
n
e
ca
r
r
y
t
h
e
m
ax
i
m
u
m
s
u
r
f
ac
e
c
u
r
r
en
t
i
n
t
h
is
d
ir
ec
tio
n
.
W
h
e
n
o
n
e
p
o
r
t is e
x
cited
a
n
d
t
h
e
f
u
r
t
h
er
p
o
r
ts
ar
e
co
m
p
leted
w
it
h
m
atc
h
ed
lo
ad
s
,
th
ese
o
p
ti
m
izatio
n
s
tr
ate
g
ies
h
elp
t
h
e
MI
MO
an
te
n
n
a
f
u
n
ctio
n
b
etter
at
3
8
GHz
.
E
x
ce
p
t
f
o
r
an
te
n
n
a
1
,
w
h
ic
h
is
a
ctiv
ated
b
y
a
s
u
r
f
ac
e
c
u
r
r
en
t,
th
e
a
n
te
n
n
a
s
d
o
n
o
t
ex
h
ib
it
a
s
i
g
n
if
ican
t
a
m
o
u
n
t
o
f
s
u
r
f
ac
e
c
u
r
r
en
t,
a
s
s
ee
n
i
n
Fig
u
r
es
8
(
c
)
an
d
8(
d
)
.
T
u
r
n
in
g
o
n
j
u
s
t
an
ten
n
a
2
p
r
ev
en
ts
t
h
e
o
th
er
a
n
te
n
n
a
s
f
r
o
m
p
r
o
d
u
ci
n
g
s
u
r
f
ac
e
cu
r
r
en
t
s
.
W
h
en
a
n
te
n
n
a
3
o
r
an
ten
n
a
4
is
ar
o
u
s
ed
,
th
e
s
a
m
e
h
ap
p
en
s
i
n
Fi
g
u
r
es 8
(
e
)
an
d
8
(
f
).
Evaluation Warning : The document was created with Spire.PDF for Python.
T
E
L
KOM
NI
K
A
T
elec
o
m
m
u
n
C
o
m
p
u
t E
l
C
o
n
tr
o
l
Hig
h
-
b
a
n
d
w
id
th
millimetr
e
w
a
ve
mu
ltip
le
-
in
p
u
t m
u
ltip
le
-
o
u
tp
u
t a
n
ten
n
a
fo
r
…
(
Md
.
A
s
h
r
a
fu
l H
a
q
u
e
)
289
(
a)
(
b
)
(
c)
(
d
)
(
e)
(
f
)
Fig
u
r
e
8
.
C
u
r
r
en
t d
is
tr
ib
u
tio
n
o
f
;
(
a)
s
in
g
le
-
ele
m
en
t,
(
b
)
ar
r
ay
an
te
n
n
a,
(
c)
MI
MO
(
A
n
t.
1
)
,
(
d
)
MI
MO
(
An
t.
2
)
,
(
e)
MI
MO
(
A
n
t.
3
)
,
a
n
d
(
f
)
MI
MO
(
An
t.
4
)
5.
RADIA
T
I
O
N
P
A
T
T
E
RN
A
r
ad
iatio
n
p
atter
n
d
ir
ec
tl
y
d
escr
ib
es
an
an
te
n
n
a
’
s
p
o
w
er
in
s
p
ac
e.
T
w
o
m
ai
n
elec
tr
o
m
a
g
n
et
ic
f
ield
co
m
p
o
n
e
n
t
s
s
u
r
r
o
u
n
d
a
n
an
t
en
n
a:
th
e
elec
tr
ic
f
ield
(
E
-
f
i
eld
)
an
d
th
e
m
a
g
n
etic
f
ield
(
H
-
f
ield
)
.
Fig
u
r
e
9
illu
s
tr
ates
th
e
X
Z
cu
t
at
Φ
=0
°
,
also
r
ef
er
r
e
d
to
as
th
e
E
-
p
lan
e
o
f
th
e
r
ad
iatio
n
p
atter
n
.
On
th
e
o
th
er
h
an
d
,
th
e
co
n
f
i
g
u
r
atio
n
i
n
q
u
e
s
tio
n
,
w
h
ich
r
e
m
a
in
s
at
a
f
i
x
ed
an
g
le
o
f
9
0
°
an
d
v
ar
ie
s
b
et
w
ee
n
0
°
an
d
3
6
0
°
[
2
2
]
,
is
d
en
o
ted
as
th
e
Y
Z
c
u
t
(
Φ
=9
0
°
)
in
Fi
g
u
r
e
9
a
n
d
is
also
k
n
o
wn
as
t
h
e
H
-
p
lan
e.
T
h
e
lo
b
e
’
s
i
n
i
tial
f
o
cu
s
,
w
h
ich
co
r
r
esp
o
n
d
s
to
4
4
GHz
,
is
p
o
s
itio
n
ed
at
(
3
4
6
0
,
1
6
.
4
0
)
f
o
r
(
0
°
,
9
0
°
)
.
A
t
an
g
les
o
f
0
°
an
d
9
0
°
,
th
e
a
m
p
lit
u
d
e
o
f
th
e
i
n
itial
lo
b
e
o
f
t
h
e
E
-
f
ield
is
1
8
.
8
-
an
d
1
6
.
4
-
d
B
V/m
,
r
esp
ec
tiv
el
y
.
T
h
e
H
-
f
ield
h
a
s
a
h
alf
-
p
o
w
er
b
ea
m
w
id
t
h
(
HP
B
W
)
o
f
3
8
.
7
°
,
an
in
itial lo
b
e
m
ag
n
it
u
d
e
o
f
-
3
2
.
4
d
B
A
/
m
a
t p
h
i=9
°
,
w
h
er
ea
s
th
e
3
d
B
an
g
u
lar
b
ea
m
w
id
t
h
at
φ=
9
0
°
is
1
4
.
5
0
at
4
4
GHz
.
Fig
u
r
e
9
.
Vie
w
p
r
o
p
o
s
ed
MI
MO
an
te
n
n
a
n
o
r
m
alize
d
r
ad
iat
io
n
p
atter
n
Evaluation Warning : The document was created with Spire.PDF for Python.
I
SS
N
:
1
6
9
3
-
6930
T
E
L
KOM
NI
K
A
T
elec
o
m
m
u
n
C
o
m
p
u
t E
l
C
o
n
tr
o
l
,
Vo
l.
23
,
No
.
2
,
A
p
r
il
20
25
:
2
8
3
-
294
290
6.
E
NV
E
L
O
P
CO
RR
E
L
A
T
I
O
N
CO
E
F
F
I
CI
E
N
T
AND
D
I
VE
RS
I
T
Y
G
A
I
N
T
o
ev
alu
ate
th
e
f
u
n
ctio
n
al
it
y
o
f
th
e
MI
MO
an
ten
n
a
m
e
th
o
d
,
it
is
ess
en
tial
to
an
al
y
ze
ex
ac
t
attr
ib
u
tes
u
s
u
all
y
k
n
o
w
n
a
s
“
MI
MO
p
e
r
f
o
r
m
an
ce
m
e
tr
ics.
”
T
h
ese
m
etr
ics
ca
n
b
e
ca
lcu
la
ted
af
ter
th
e
S
-
P
ar
a
m
eter
s
,
p
r
o
v
id
in
g
w
o
r
th
y
i
n
f
o
r
m
atio
n
o
n
h
o
w
co
m
m
o
n
co
u
p
li
n
g
a
n
d
an
ten
n
a
i
m
p
ed
a
n
ce
s
i
m
ilar
l
y
to
u
ch
t
h
e
d
iv
er
s
i
t
y
p
r
esen
tatio
n
o
f
t
h
e
MI
MO
an
ten
n
a.
T
h
e
E
C
C
,
a
m
ea
s
u
r
e
u
s
ed
to
g
au
g
e
th
e
s
i
m
ilar
it
y
o
f
r
ad
iatio
n
p
atter
n
s
f
r
o
m
c
h
an
g
ed
an
ten
n
as,
i
s
n
o
t
j
u
s
t
a
th
eo
r
etica
l
co
n
ce
p
t.
I
t
h
as
r
ea
l
-
w
o
r
ld
i
m
p
l
icatio
n
s
.
A
ca
lcu
late
d
v
alu
e
o
f
E
C
C
les
s
th
a
n
0
.
0
0
0
8
w
as
d
e
ter
m
i
n
ed
,
in
d
icatin
g
t
h
e
p
r
ac
ticalit
y
o
f
t
h
e
MI
MO
an
te
n
n
a.
I
n
an
u
n
co
r
r
elate
d
MI
MO
an
te
n
n
a,
th
e
id
ea
l
E
C
C
v
alu
e
is
ze
r
o
,
b
u
t
i
n
p
r
ac
tical
MI
MO
s
i
tu
at
io
n
s
,
m
ai
n
tai
n
in
g
E
C
C
b
elo
w
o
r
eq
u
al
to
0
.
5
ac
r
o
s
s
th
e
en
t
ir
e
u
s
ab
le
f
r
eq
u
e
n
c
y
r
an
g
e
i
s
a
d
v
is
ab
le
[
2
3
]
.
Fig
u
r
e
1
0
v
is
u
all
y
r
ep
r
esen
ts
t
h
e
an
ten
n
a
’
s
e
n
v
e
lo
p
e
co
r
r
elatio
n
co
ef
f
icie
n
t,
r
ein
f
o
r
cin
g
t
h
e
p
r
ac
ticalit
y
o
f
o
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Evaluation Warning : The document was created with Spire.PDF for Python.