Indonesi
an
Journa
l
of El
ect
ri
cal Engineer
ing
an
d
Comp
ut
er
Scie
nce
Vo
l.
13
,
No.
1
,
Jan
uar
y
201
9
,
pp.
243
~
248
IS
S
N: 25
02
-
4752, DO
I: 10
.11
591/ijeecs
.v1
3
.i
1
.pp
243
-
248
243
Journ
al h
om
e
page
:
http:
//
ia
es
core.c
om/j
ourn
als/i
ndex.
ph
p/ij
eecs
Bandp
ass
filte
r bas
ed on comple
menta
ry split rin
g
reson
ators at
X
-
Band
Furq
an
F
urq
an, S
aid
Att
am
im
i, A
n
di Adr
iansyah
, Mud
ri
k A
la
yd
r
us
Depa
rtment
o
f
E
le
c
tri
c
al E
ngin
eering,
Univ
ersitas Merc
u
Buana
Jl.
Meru
y
a
Sel
atan
No 1
Jaka
rt
a Bara
t
,
5840816
,
Indone
sia
Art
ic
le
In
f
o
ABSTR
A
CT
Art
ic
le
history:
Re
cei
ved
Sep
1
2
, 201
8
Re
vised N
ov 13
, 2
018
Accepte
d Nov
27
, 201
8
Com
ple
m
ent
ar
y
Split
Ring
Res
onat
ors
were
us
ed
embedde
d
in
a
subs
tra
t
e
int
egr
at
ed
wave
guide
to
gen
erat
e
passband
cha
r
at
er
isti
cs
in
X
-
B
and.
B
ase
d
on
a
par
ameter
stud
y
wi
th
an
elec
tromagnet
i
c
comm
erc
ial
softwar
e
,
the
cha
r
ac
t
eri
sti
cs
of
double
and
quadr
uple
C
SR
Rs
ac
cor
ding
t
he
ref
lecti
on
and
tra
nsm
ission
fac
tor
were
o
bserve
d.
The
co
m
pute
r
sim
ula
ti
on
show
ed,
the
bandp
ass
fil
t
er
worked
in
th
e
fre
quen
c
y
ran
g
e
8.
12
-
8
.
63
GH
z
and
8
.
11
-
8.
63
GH
z
for
d
ouble
and
quadr
uple
CS
RR,
respe
ctively
.
The
i
nserti
on
loss
was
0.
12
dB
an
d
0.
015
dB.
Th
e
m
ea
surem
ent
m
it
a
ve
ct
or
n
et
w
ork
ana
l
y
z
er
ver
ified
the
sim
ula
ti
on
r
esult
s.
The
fre
qu
en
y
ra
nge
m
ea
sured
was
8.
12
-
8.
6
7
GH
z
and
8.
12
-
8.
61
GH
z
for
d
ouble
and
quad
ruple
CS
RRs
,
r
espe
ctive
l
y
.
The
m
ea
sur
ed
in
serti
on
loss was
0.
25
dB
and
0
.
2
dB.
Ke
yw
or
ds:
Ba
ndpass
f
il
te
r
CSR
R
Substrate
inte
grat
ed wa
veguid
e
X
-
ba
nd
Copyright
©
201
9
Instit
ut
e
o
f Ad
vanc
ed
Engi
n
ee
r
ing
and
S
cienc
e
.
Al
l
rights re
serv
ed.
Corres
pond
in
g
Aut
h
or
:
Mudrik
Alay
dr
us
,
Dep
a
rtm
ent o
f El
ect
rical
En
gi
neer
i
ng,
Un
i
ver
sit
as
Me
rcu Bua
na,
Jl. Mer
uya Sel
at
an
N
o 1 Ja
ka
rta Barat
, 5
840816,
In
donesia
.
Em
a
il
:
m
ud
rik
al
ay
dr
us
@m
ercu
bua
na.
ac.i
d
1.
INTROD
U
CTION
The
nee
d
f
or
a
n
eff
ect
i
ve
sep
arati
on
o
f
sig
na
ls
with
diff
e
re
nt
fr
e
qu
e
ncies ref
le
ct
s
in
m
an
y
research
e
s
of
highly
sel
e
ct
ive
bandpas
s
and
lo
w
pass
filt
ers
[1
-
5].
In
[
1],
a
ba
ndpass
filt
er
with
f
our
ope
n
loop
rectan
gu
la
r
re
s
on
at
or
s
wa
s
i
m
ple
m
ented
in
lo
ssy
s
ub
st
r
at
e.
The
res
on
at
or
s
a
re
not
on
ly
c
ouple
d
directl
y,
bu
t
al
so
c
oupl
ed
thr
ough
c
ro
ss
ways,
w
hich
le
ads
t
o
cancel
at
ion
of
t
he
sign
al
at
certai
n
fr
e
qu
encies.
This
co
nd
it
io
n
pro
du
ce
d
the
tr
ansm
issi
on
zero
s
of
the
filt
er.
An
i
m
pr
ove
d
ver
si
on
of
sel
e
ct
ive
bandp
a
ss
filt
er
was
desi
gn
e
d
in [
2].
Her
e
, th
e
ap
proac
he
d
wi
th d
irect
and cross cou
pled
op
en
loop r
ect
a
ngula
r
res
on
at
ors sti
l
l
us
e
d,
ho
wev
e
r,
the
filt
er
was
i
m
ple
m
ented
i
n
rathe
r
sm
all
lossy
su
bst
rate
and
the
nu
m
ber
of
resonato
r
s
was
increase
d
to
six.
In
t
his
way,
four
t
ran
sm
issi
on
z
er
os
are
ge
ner
at
e
d,
a
nd
due
to
t
he
sm
al
l
loss
of
t
he
sub
strat
e,
the
tra
ns
m
issio
n
zer
os
are
ve
ry
cl
ear
t
o
se
e,
w
hic
h
gen
e
r
at
e
an
at
te
nuat
ion
of
a
rou
nd
50
dB
nea
r
t
he
pass
reg
i
on.
I
n
[
3]
two
dual
-
m
od
e
rectan
gu
la
r
rin
g
res
onat
ors
w
ere
desi
gn
e
d
at
rad
io
fr
e
quen
cy
above
20
G
Hz
in
m
ul
ti
la
ye
r
te
chn
ol
og
y.
W
it
h
the
cr
os
s
-
c
oupling
bet
ween
res
on
at
or
s
tw
o
tra
ns
m
is
sion
zer
os
we
re
ge
ne
rated
at
lowe
r
an
d
up
pe
r
re
gion
of
th
e
pass
band.
An
a
ppr
oac
h
to
en
ha
nce
the
sel
ect
ivit
y
of
an
existi
ng
filt
er
wa
s
carried
ou
t
by
add
i
ng
se
ver
al
com
ple
m
entary
sp
li
t
rin
g
res
on
at
or
s
on
the
bo
tt
om
side
[4]
.
The
res
ult
s
how
e
d
that
the
ba
nd
w
idth
inc
reased
and
a p
ai
r
of
tr
ansm
issi
on
zer
os
we
re
ge
ne
ra
te
d
due
to
s
uitable
dim
ension
o
f
the
resonato
rs.
I
n
[5
]
,
c
om
pact
siz
ed
lo
wp
as
s
filt
ers
with
go
od
pe
rfor
m
ance
in
sel
ect
ivit
y
wer
e
i
ntrod
uced.
The
w
ork
was
based
on
m
od
ific
at
ion
of
the
gro
und
of
a
si
m
ple
m
ic
r
os
trip
li
ne.
T
he
m
od
ific
at
ion
of
th
e
gro
und
pla
ne,
the
de
fected
groun
d
str
uctu
re
(DGS
),
w
as
pe
rfor
m
ed
by
in
tro
du
ci
ng
a
Hi
lbert
cu
rv
e
rin
g
an
d
Sierpi
ns
ki
ca
rpet
.
The
sim
ulatio
n
a
nd
m
easu
rem
ent
sh
ow
e
d
sha
r
per
sel
ec
ti
vity
aro
und
t
he
cut
-
off
fr
e
quen
c
y
of the
filt
ers.
Evaluation Warning : The document was created with Spire.PDF for Python.
IS
S
N
:
2502
-
4752
Ind
on
esi
a
n
J
E
le
c Eng &
Co
m
p
Sci,
Vo
l.
13
, N
o.
1
,
Ja
nu
a
ry 20
19
:
243
–
248
244
So
m
e
oth
er
pu
blica
ti
on
s
co
nc
ern
e
d
with
m
ulti
ban
d
filt
er
char
act
erist
ic
s
[6
,
7].
Both
w
ork
s
m
ade
us
e
the
co
ncep
t
of
ste
pp
e
d
im
ped
ance
to
get
du
al
band
an
d
he
ptab
and
filt
er
be
hav
i
ours,
res
pe
ct
ively
.
More
ov
e
r,
t
he
desig
ne
d
filt
ers
are
c
om
p
act
du
e
t
o
f
old
i
ng
of
the
st
ub
struct
ur
es
.
I
n
[8
]
,
a
c
om
pact
an
d
wide
band
ba
ndstop
filt
er
was
stud
ie
d.
T
his
s
m
al
l
fil
te
r
with
dim
ension
of
17
x
20
m
m
2
,
was
m
ade
by
s
i
m
ply
stubbin
g
a
rec
ta
ngular
s
plit
rin
g
res
onat
or
in
the
m
id
of
the
transm
issio
n
li
ne
,
w
hic
h
le
ad
to
a
sto
pba
nd
char
act
e
risti
c
at
arou
nd
2.2
G
Hz.
A
filt
er
ba
sed
on
a
subst
rate
integ
rated
wa
vegui
de
(SI
W)
with
D
GS
was
stud
ie
d
[9
]
.
Th
e
filt
er
wor
ked
at
f
reque
ncy
be
tween
3.7
–
4.2
GH
z
with
a
return
loss
bette
r
than
17
dB
and
a
n
insertio
n
loss
of
ar
o
und
1.0
2
dB.
In
[
10]
a
m
ic
ro
strip
cavi
ty
filt
er
fo
r
X
-
band
was
desi
gn
e
d.
T
he
filt
er
was
integrate
d
in
a
powe
r divide
r a
nd cou
pler.
In
t
his
w
ork,
s
om
e
co
m
ple
m
entary
s
plit
rin
g
res
onat
ors (
CSR
R)
are
l
oad
e
d
in
a
substrat
e
d
inte
gr
at
e
d
wav
e
guide
(
S
I
W)
to
obta
in
a
bandp
ass
char
act
e
risti
cs
between
8.1
2
–
8.6
1
G
H
z.
In
this
pas
sb
a
nd,
the
ref
le
ct
io
n
factor
sho
uld
be
lo
wer
th
an
-
15
dB
a
nd
the
inse
rtion
l
oss
shou
l
d
be
s
m
al
le
r
than
0.3
dB
.
A
pa
ram
et
er
st
ud
y
with
S
onne
t
v1
6.5
2
is
pe
rfor
m
ed
to
ob
s
erv
e
the
beh
a
vi
our
of
d
ouble
a
nd
qu
a
dru
ple
CSR
R
accor
ding t
he r
eflect
ion
a
nd tr
ansm
issi
on
f
ac
tor.
2.
RESEA
R
CH MET
HO
D
2
.
1.
S
ubs
trat
e Int
e
gr
at
e
d
Waveg
uide
The
str
uctu
re
of
a
s
ubstrat
e
integrate
d
wa
veguide
(SI
W
)
is
de
picte
d
i
n
Fig
ure
1(a)
.
The
basic
m
at
erial
of
an
SIW
is
a
s
ubstr
at
e
with
a
thi
ckn
e
ss
of
h
a
nd
a
relat
iv
pe
r
m
itti
vity
of
ε
r
.
The
bac
k
a
nd
uppe
r
side
of
t
he
S
I
W
is
a
m
et
al
l
i
c
la
ye
r.
S
pecifi
c
for
a
n
S
I
W
a
re
the
t
wo
li
ne
s
of
m
et
allic
po
sts
with
a
distance
a
from
each
othe
r.
T
w
o
posts
in
a
li
ne
are
s
epar
at
e
d
by
p
(p
it
ch
dis
ta
nc
e
)
a
nd
the
dia
m
et
er
of
t
he
m
et
al
l
i
c
po
sts
is
d
.
Figure
1
.
(
a
) G
eom
et
ry o
f
s
ubtrat
e integ
rated
w
a
veguide
, (b
)
Ma
gnet
ic
f
ie
l
d dist
rib
ution a
bove
t
he
cut
-
off
f
re
qu
e
nc
y
This
struct
ur
e
act
s
l
ike
a
wav
e
guide,
w
hich
is
able
to
gu
i
de
el
ect
ro
m
agn
et
ic
w
ave
ha
ving
fr
e
qu
e
ncies
hi
gh
e
r
tha
n
the
cut
-
off
f
requ
ency
of
the
S
I
W.
The
cut
-
off
fr
e
quency
of
the
SIW
can
be
cal
culat
ed by [
11
]
.
≈
2
√
(
−
2
0
.
95
)
−
1
(1)
Figure
1(b
)
s
ho
ws
the
m
agnet
ic
fiel
d
distri
bu
ti
on
al
ong
t
he
S
I
W
f
or
si
gn
al
fr
e
quenci
es
ab
ove
the
cut
-
off
f
reque
nc
y.
As
lo
ng
as
the
pitch
distance
p
sm
all
enou
gh,
the
fiel
d
distri
bu
ti
on
i
s
lim
i
te
d
insid
e
the
SIW w
it
h neg
li
gib
ly
sm
al
l energ
y l
ea
kag
e
.
In
t
his
w
ork,
we
use
d
t
he
s
epar
at
io
n
betw
een
the
post
li
nes
a
=1
3
m
m
,
the
diam
et
er
of
t
he
posts
d
=0
.8
m
m
and
the
pitc
h
dista
nce
p
=1
.6
m
m
.
Im
ple
m
enting
the
S
I
W
i
n
a
su
bst
rate
with
relat
ive
pe
rm
i
t
ti
vity
of
2.2
2,
these
values
le
ad
ac
cordin
g
t
o
e
q.
(1)
to
a
c
ut
-
off
f
re
qu
e
ncy
of
8.0
4
GH
z
.
In
order
to
c
onne
ct
th
e
SIW to
a f
ee
di
ng m
ic
ro
strip l
ine, tape
rin
g
t
r
ansiti
on
s
b
et
w
een those
trans
m
issi
on
li
nes
a
re
desig
ned [
12]
.
2.2.
Co
m
ple
ment
ary Split
Ring Res
ona
t
or
A
si
ng
le
CSR
R
em
bed
ded
on
t
he
to
p
of
a
SIW
is
de
picte
d
i
n
Fi
gure
2(
a).
This
res
ona
tor
i
nteract
s
with
the
fun
da
m
ental
m
od
e
of
wa
ve
pr
op
a
gationg
i
n
the
SIW
(t
he
H
10
m
od
e)
.
T
he
c
ouplin
g
be
twe
en
the
CSR
R
and
the
SIW
is
desc
rib
ed
in
Fig
ur
e
2(
b)
by
the
pa
rall
el
reso
nat
or
ci
r
cuit
con
ta
inin
g
Lc
and
Cc
and
al
so
R for i
nclu
ding
possible
l
os
s
[
13
]
.
W
it
h t
his
m
od
el
, th
ere is
a possi
ble tra
nsm
issi
on
zer
o at
the freque
nc
y
Evaluation Warning : The document was created with Spire.PDF for Python.
Ind
on
esi
a
n
J
E
le
c Eng &
Co
m
p
Sci
IS
S
N:
25
02
-
4752
Ba
ndpass fi
lt
er base
d on co
m
pleme
nta
ry
sp
l
it
ring
re
son
ato
rs
at X
-
B
and
(
Furqan F
urqan
)
245
=
1
2
√
(
+
)
(2)
Her
e
,
we
use
RT/
Duro
i
d
58
80
s
ubstrat
e
(
di
el
ect
ric
con
sta
nt
εr
=
2.2
2,
th
ic
kn
ess
h
=
1.5
8mm
and
ta
n
δ
=
0.0
02),
a
nd
in
or
der
to
ge
t
a
tran
sm
iss
i
on
zer
o
at
9.2
GH
z
,
we
us
e
s
=0.3
m
m
,
g=0
.
4
m
m
,
c=4
m
m
,
b=2
.
2
m
m
,
and
for
in
ner
lo
op, b’=
1m
m
, c’
=2.8 m
m
.
(a)
(b)
Figure
2
.
(
a
)
Si
ng
le
C
SRR
on t
he
to
p of t
he S
I
W,
(b
)
e
qu
i
valent circ
uit desc
ribing
i
nteracti
on CSRR
a
nd
SIW
for fu
ndam
enta
l
m
od
e
H
10
Sm
a
ll
er
values
of
b
a
nd
c,
would
pus
h
t
he
tran
sm
issi
on
zer
o
to
highe
r
f
re
qu
e
ncy.
Howe
ver
the
dim
ension
of
t
he
in
ne
r
lo
op
be
com
es s
m
al
ler
a
nd co
m
plica
te
d
to
be
m
anufacture
d.
3.
RESU
LT
S
A
ND
DI
SCUS
S
ION
3.1.
Sim
ulat
i
on
In
t
his
resea
rc
h,
base
d
on
t
he
ge
om
et
ry
of
the
CSR
R
gi
ven
in
S
ect
io
n
2.2,
a
pa
ram
e
te
r
stu
dy
is
perform
ed.
Figure
3(
a
)
gi
ve
s
the
ba
ndpa
ss
filt
er
with
double
CSR
Rs,
w
her
ea
s
Fi
gure
3(b)
s
ho
ws
the
band
pass fil
te
r wit
h qu
a
dru
ple
CSRR
s.
The
SIW
l
oade
d
by
a
pair
of
CSR
Rs
has
the
adv
anta
ge
of
increasi
ng
retu
rn
loss
,
m
ini
m
iz
ing
insertio
n
loss
.
B
y
adj
us
ti
ng
t
he
distance
bet
ween
CSR
Rs,
i
t
will
aff
ect
the
couplin
g
valu
e
of
CSR
Rs
so
that
it
will
aff
ect
the
per
f
or
m
ance
of
the
filt
er
s
uch
as
the
re
su
lt
ing
m
idd
le
fr
eq
ue
ncy
va
lue,
insertio
n
loss,
return l
os
s a
nd
band
width.
(a)
(b)
Figure
3
.
(a
)
St
ru
ct
ur
e
with
do
ub
le
C
SRR
w
it
h
d
=0
.8 m
m
,
p
=1.6 m
m
,
s
=0.3 m
m
,
g
=0.4
m
m
,
c
=4
m
m
,
b
=2.2 m
m
, an
d
f
or in
ne
r
lo
op,
b
’=
1mm
,
c
’=2
.8 m
m
,
W
t
=3.6 m
m
,
L
t
=6.5 m
m
,
S
1
separ
at
io
n betwe
en
CSR
R, (b)
Str
uc
ture wit
h q
ua
dru
ple CSRR
, sa
m
e d
i
m
ension
values
as in
(a
)
a
nd w
it
h sep
arati
on
s
S
1
an
d
S
2
W
it
h
sim
ulati
on
s
of
tw
are
Son
net
v.1
6.5
2,
w
e
si
m
ulate
the
distance
var
ia
ti
on
bet
ween
C
S
RR
s
so
the
m
os
t
m
axi
m
al
value
ca
n
be
obta
ined
with
out
changin
g
pa
r
a
m
et
ers
of
CS
RR
s
it
sel
f.
This
var
ia
ti
on
us
e
s
the
swee
p
par
am
et
er
in
the
S
onnet
set
ti
ng
s
o
that
distanc
e
can
be
cha
ng
e
from
0.
5
m
m
to
0.
8
m
m
by 0.1 m
m
step
.
C
L
L
L
c
C
c
R
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on
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a
n
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le
c Eng &
Co
m
p
Sci,
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l.
13
, N
o.
1
,
Ja
nu
a
ry 20
19
:
243
–
248
246
Figure
4(a)
shows
the
re
flect
ion
S
11
and
tra
ns
m
issi
on
factor
S
21
for
doub
le
CSR
Rs
as
functi
on
of
th
e
separ
at
io
n
S
1
.
Table
1
gi
ves
the
im
po
rtant
va
lues
obta
ined
by
this
var
ia
ti
on.
W
e
see
i
n
T
able
1,
the
var
i
at
ion
of
distance
S
1
has no ef
fect t
o t
he
m
idfr
eq
ue
ncy of the
filt
er, howe
ver
it
ha
s sig
nificant i
m
pact to the
i
ns
erti
on
loss
an
d
ret
urn
loss.
T
hro
ugh
this
par
am
et
er
stud
y,
t
he
dista
nce
S
1
=
0.7
m
m
giv
es
the
optim
a
l
resu
lt
fu
l
fill
ed
the
sp
eci
ficat
i
on
giv
e
n
at
th
e
beg
i
nn
i
ng.
The
band
widt
h
obta
ine
d
with
this
distance
is
around
500
MHz
(w
it
h res
pect t
o retur
n
l
os
s
bi
g
ge
r
t
han 15
dB
).
Table
1.
Sim
ul
at
ion
Re
s
ult
f
or
D
ouble
CSR
Rs
S
1
(
m
m
)
Mid
f
requ
en
cy
(GHz
)
Ins
ertion
lo
ss
(
d
B)
Retu
rn
lo
ss
(
d
B)
Ban
d
wid
th
(M
Hz
)
0
.5
8
.50
0
.47
1
8
.65
950
0
.6
8
.50
0
.48
1
4
.07
700
0
.7
8
.45
0
.12
3
4
.51
510
0
.8
8
.50
0
.17
1
3
.34
650
Table
2
.
Sim
ul
at
ion
Re
s
ult
f
or
Q
ua
dru
ple
C
SRR
s
S
1
, S
2
(
m
m
)
Mid
f
requ
en
cy
(GHz
)
Ins
ertion
lo
ss
(
d
B)
Retu
rn
lo
ss
(
d
B)
Ban
d
wid
th
(M
Hz
)
0
.5
8
.15
0
.01
5
1
7
.03
312
0
.6
8
.25
0
.09
0
1
9
.84
324
0
.7
8
.32
0
.01
5
4
2
.75
515
0
.8
8
.30
0
.18
2
2
2
.53
389
Figure
4(b
)
gi
ves
t
he
ref
le
ct
ion
S
11
a
nd
tra
nsm
issi
on
factor
S
21
f
or
qu
a
dru
ple
CSR
Rs
as
functi
on
of
the
sepa
rati
on
S
1
and
S
2
.
He
r
e,
in
orde
r
to
r
est
rict
too
m
any
cases,
we
ch
ang
e
both
dista
nces
eq
ual
S
1
=S
2
,
an
d
var
y
them
fr
om
0.
5
m
m
to
0.8
m
m
.
Tabl
e
2
hi
gh
li
ghts
the
i
m
po
rta
nt
values
obta
in
ed
by
this
vari
at
ion.
Her
e
,
agai
n
th
e
distance
S
1
=S
2
=0.7
m
m
gi
ves
the
best
va
lues
of
ret
urn
loss
42.
75
dB
an
d
the
s
m
al
le
st
insertio
n
loss
0.015
dB
.
H
oweve
r
the
m
id
fr
eq
ue
ncy
is
l
it
tl
e
bit
sh
ifte
d
to
8.
32
G
Hz
with
rathe
r
un
change
d
band
width o
f
a
bout
515 G
Hz.
(a)
(b)
Figure
4. (a
)
T
he reflect
io
n
S
11
and tra
ns
m
is
sion facto
r S
21
for dou
ble CS
RR
s as fu
nctio
n of sepa
rati
on
S
1
(in
m
m
),
(
b) Th
e
r
e
flect
ion
S
11
an
d
tra
ns
m
issi
on
facto
r
S
21
for q
uadruple
CSRR
s as
fun
ct
ion
of hor
iz
onta
l
and v
e
rtic
al
se
par
at
io
n S
1
an
d S
2
(i
n
m
m
)
3.2.
Measure
ment
Figure
5
s
how
s
the
fa
bri
cat
ed
filt
ers.
The
SIW
filt
er
loa
ded
by
qu
a
dru
ple
CSR
Rs
ha
s
the
sam
e
dim
ension
li
ke
the
filt
er
wit
h
do
ub
le
CSR
Rs.
The
fabric
at
ed
double
C
SRR
is
the
m
od
el
for
S
1
=
0.7
mm
,
wh
e
reas th
e qu
adru
ple CSRR
s is the m
od
el
for
S
1
=S
2
=0
.7
m
m
. Th
e o
ve
ra
ll
d
i
m
ension
of the f
il
te
r
is 3
2 m
m
x
16
m
m
.
The
filt
ers
are
conn
ect
ed
with
S
MA
co
nn
ect
ors
and
m
easur
e
d
by
the
vector
netw
ork
an
al
yz
er
ZV
A
67
from
Rohde
& Sc
hw
arz.
Figure
6
gi
ves
the
co
m
par
is
on
of
sim
ulatio
n
a
nd
m
easur
em
ent
fo
r
doub
le
an
d
qua
dru
ple
CSR
R.
Exce
pt
of
s
ome
dev
ia
si
on
s
i
n
“zer
o”
re
flec
ti
on
s
in
the
pa
ssb
a
nd
s
a
nd
in
“t
ran
sm
issi
on
zero
s”
i
n
sto
p
band
du
e
t
o
loss
in
su
bt
rates,
the
m
ea
su
red
dat
a
confirm
s
the
si
m
ulati
on
r
esults
ver
y
w
el
l.
Table
3
gi
ves
a
com
par
ison
b
e
tween
im
po
rtant
values
obta
ined
by
si
m
ulati
on
a
nd
m
easurem
ent.
The
f
re
qu
e
ncy
ra
ng
e
a
nd
th
e
band
width
a
r
e
pr
act
ic
al
ly
un
c
ha
ng
e
d.
T
he
inse
rtion
loss
increa
ses
sign
ifa
ntly
,
how
e
ver
the
valu
e
is st
il
l s
m
all.
Evaluation Warning : The document was created with Spire.PDF for Python.
Ind
on
esi
a
n
J
E
le
c Eng &
Co
m
p
Sci
IS
S
N:
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02
-
4752
Ba
ndpass fi
lt
er base
d on co
m
pleme
nta
ry
sp
l
it
ring
re
son
ato
rs
at X
-
B
and
(
Furqan F
urqan
)
247
Figure
5
.
The
photog
raph
of
fabrica
te
d ba
ndpa
ss f
il
te
rs
(a)
(b)
Figure
6. (a
)
C
om
par
ison o
f
t
he
sim
ulate
d
and m
easur
ed re
flect
ion
S
11
an
d
tra
ns
m
issi
on
factor S
21
for d
ouble
CSR
Rs for
S
1
=0.7 m
m
, (
b)
C
om
par
ison
of th
e sim
ulate
d
and
m
easur
ed
r
e
f
le
ct
ion
S
11
a
nd
transm
issi
on
f
a
ct
or
S
21
for q
uadr
uple
CSRR
s
for S
1
=S
2
=0.7 m
m
Table
3
.
C
om
par
iso
n
Be
twee
n
Sim
ulati
on
R
esult
an
d
Me
as
ur
em
ents
Frequ
en
cy
r
an
g
e
(GHz
)
Ins
ertion
lo
ss
(dB
)
Retu
rn lo
ss
(dB
)
Ban
d
wid
th
(M
Hz
)
Si
m
u
latio
n
Do
u
b
le
8
.12
-
8
.63
0
.12
3
4
.51
510
Qu
ad
rup
le
8
.11
-
8
.63
0
.01
5
4
2
.75
515
Measu
re
m
en
t
Do
u
b
le
8
.12
-
8
.67
0
.25
1
8
.50
550
Qu
ad
rup
le
8
.12
–
8
.61
0
.20
2
1
.67
490
4.
CONCL
US
I
O
N
Tw
o
ba
ndpas
s
filt
ers
in
S
I
W
l
oad
e
d
by
seve
r
al
CSR
Rs
were
desig
ne
d.
Ba
sed
on
a
pa
ra
m
et
er
stud
y,
the
be
ha
viour
of
do
ub
le
a
nd
qu
a
dru
ple
CS
RR
s
accor
ding
the
ref
le
ct
io
n
and
tra
ns
m
issio
n
fact
or
is
ob
serv
e
d.
The
sim
ulati
on
sh
owe
d,
the
ba
ndpass
filt
er
work
i
n
the
f
re
qu
e
ncy
ra
nge
8.12
-
8.63
GH
z
and
8.1
1
-
8.63
G
H
z
for
double
and
qu
a
dru
ple
CSR
R,
respec
ti
vely
.
The
insertion
lo
ss
was
0.1
2
dB
and
0.0
15
dB.
The
m
easur
em
ent
confirm
ed
the
si
m
ulati
on
.
The
fr
e
queny
range
m
easur
ed
was
8.1
2
-
8.6
7
G
Hz
an
d
8.1
2
-
8.6
1
GH
z
f
or
double
and
qua
drup
l
e
CSR
Rs,
respec
ti
vely
.
The
m
easur
ed
ins
er
ti
on
loss
was
0.25
dB
and
0.2
dB.
The
i
ncr
easi
ng v
al
ue
in
i
ns
e
rtion
l
os
s
was
pr
ob
a
bly d
ue
t
o hig
her loss
in
t
he
m
at
erial
.
ACKN
OWLE
DGE
MENTS
The
a
uthors
w
ou
l
d
li
ke
to
th
ank
KEME
NR
IS
TE
K
D
I
KTI
for
the
fi
nan
c
ia
l
su
pport
of
t
his
resea
rc
h
for
the
p
e
rio
d 201
7
-
2018.
Evaluation Warning : The document was created with Spire.PDF for Python.
IS
S
N
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Ind
on
esi
a
n
J
E
le
c Eng &
Co
m
p
Sci,
Vo
l.
13
, N
o.
1
,
Ja
nu
a
ry 20
19
:
243
–
248
248
REFERE
NCE
S
[1]
Ala
y
drus
M
,
W
idi
astuti
D,
Yul
i
ant
o
T
.
Design
i
ng
Cros
s
-
coupl
ed
Bandpass
Fi
l
t
ers
wit
h
Tr
ansm
ission
Zeros
in
Los
sy
Mic
ros
tri
p
.
Proce
edi
ngs
of
Int.
Conf.
on
Inform
at
ion
Technol
og
y
and
E
le
c
tri
c
al
Engi
n
e
eri
ng
(ICIT
E
E).
Yog
y
ak
art
a
.
201
3;
277
-
280.
[2]
As
tut
i
DW
,
Juwa
nto
J,
Ala
y
dru
s
M.
A
Bandpa
ss
Fi
lt
er
Based
on
Square
Open
Loop
Re
sonators
at
2.
45
GH
z
.
Proce
edi
ngs
of
the
3rd
Int
.
Co
nf.
on
Instrum
ent
at
ion
,
Com
m
unic
a
ti
ons,
In
for
m
at
ion
T
ec
hnol
.
,
an
d
Biom
edic
al
Engi
ne
eri
ng
(
ICI
CI).
Bandung
.
2
013;
147
-
151.
[3]
W
aha
b
Nab,
Amiruddi
n
A,
Radzuan
R.
,
et
al.
Ba
ndpass
Filt
er
Based
on
Ring
Res
onat
or
at
RF
Freque
nc
y
above
20
GH
z.
Indone
sia
n
Journal
o
f El
e
ct
rical E
ng
ineering
and
Compute
r Sc
ie
n
ce
.
2018
; 9 (3);
680
-
6
84
.
[4]
Zha
ng
D,
W
u
Q,
Sha
X.
High
Selecti
v
e
Frequ
ency
R
esponse
i
n
a
Com
ple
m
en
ta
r
y
Spli
t
Ring
Resonat
or
b
ase
d
Tra
nsm
ission L
i
ne,
M
ic
rowav
e
a
nd
Optic
a
l
Te
ch
nology
Le
tt
ers
.
2
017;
59
(1)
:12
-
15
.
[5]
As
tut
i
DW
,
W
ah
y
uni
I
,
Mus
li
m
M,
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