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RF
a
n
d
m
icro
wa
v
e
c
o
m
m
u
n
ica
ti
o
n
sy
s
tem
s,
m
il
li
m
e
ter
wa
v
e
c
ircu
it
s
d
e
sig
n
,
a
n
d
a
n
ten
n
a
b
e
a
m
f
o
r
m
i
n
g
.
Cu
rre
n
tl
y
,
No
o
r
A
sn
iza
M
u
ra
d
is
a
m
e
m
b
e
r
o
f
IEE
E
(M
IEE
E),
M
e
m
b
e
r
o
f
A
n
ten
n
a
a
n
d
P
ro
p
a
g
a
ti
o
n
(A
P
/
M
T
T
/E
M
C)
M
a
lay
sia
Ch
a
p
ter,
a
n
d
a
S
e
n
io
r
L
e
c
tu
re
r
a
t
F
a
c
u
lt
y
o
f
El
e
c
tri
c
a
l
En
g
in
e
e
rin
g
,
Un
iv
e
rsiti
T
e
k
n
o
l
o
g
i
M
a
lay
sia
(U
T
M
).
M
o
h
a
m
a
d
K
a
m
a
l
A.
RA
H
IM
w
a
s
b
o
rn
in
A
lo
r
S
e
tar,
Ke
d
a
h
,
M
a
la
y
sia
in
1
9
6
4
.
He
o
b
tain
e
d
h
is
B.
E
n
g
El
e
c
tri
c
a
l
a
n
d
El
e
c
tro
n
ic
f
ro
m
Un
iv
e
rsit
y
o
f
S
trath
c
ly
d
e
,
U.K.
i
n
1
9
8
7
a
n
d
M
.
E
n
g
f
ro
m
Un
iv
e
rsit
y
o
f
Ne
w
S
o
u
th
W
a
les
,
A
u
stra
li
a
in
1
9
9
2
.
He
re
c
e
iv
e
d
h
is
P
h
.
D
i
n
t
h
e
f
ield
o
f
W
id
e
b
a
n
d
A
c
ti
v
e
A
n
ten
n
a
in
2
0
0
3
.
He
is
a
P
ro
f
e
ss
o
r
a
t
Co
m
m
u
n
ica
ti
o
n
s
En
g
in
e
e
rin
g
De
p
a
rtme
n
t,
F
a
c
u
lt
y
o
f
El
e
c
tri
c
a
l
En
g
in
n
e
rin
g
a
t
Un
iv
e
rsiti
Te
k
n
o
lo
g
i
M
a
lay
sia
.
P
ro
f
e
ss
o
r
M
o
h
a
m
a
d
Ka
m
a
l
is
a
s
e
n
io
r
m
e
m
b
e
r
o
f
IEE
E
sin
c
e
2
0
0
7
.
His
re
se
a
rc
h
in
tere
st
in
c
lu
d
e
s
a
n
ten
n
a
s,
m
e
ta
m
a
teria
l
s,
b
o
d
y
-
a
r
e
a
c
o
m
m
u
n
ica
ti
o
n
s,
re
c
o
n
f
ig
u
ra
b
le
a
n
ten
n
a
s
a
n
d
RF
d
e
v
ice
s
a
n
d
se
n
so
rs
.
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