Alpha Industries, Inc. [781] 935-5150
Fax [617] 824-4579
Email sales@alphaind.com
www.alphaind.com
1
Specifications subject to change without notice. 3/99A
Two-Way 0 Power Splitter
Combiner 1.711.99 GHz
Features
s
Low Cost
s
Low Profile
s
Available in Small SOIC-8 Package
s
Tape & Reel
PD18-12
Description
The PD18-12 is a monolithic two-way in-phase hybrid
junction tuned for the 1.711.99 GHz band. It offers low
loss, high isolation, good input/output matching and
exceptional phase/amplitude balance. It is available in the
SOIC-8 leaded surface mount package.
Parameter
Min.
Typ.
Max.
Unit
Frequency
1.71
1.99
GHz
Insertion Loss Less 3 dB Split
0.4
0.6
dB
Isolation
20
23
dB
Input VSWR
1.3:1
1.5:1
Output VSWR
1.2:1
1.4:1
Amplitude Balance
0.1
0.2
dB
Phase Balance
1.0
3.0
Deg.
Electrical Specifications at 25C
GND
IN/SUM
GND
GND
Port 1
GND
GND
Port 2
12
3
4
87
6
5
PD18
Pin Out
IN/SUM
Port 1
Port 2
Block Diagram
Two-Way 0 Power Splitter Combiner 1.711.99 GHz
PD18-12
2
Alpha Industries, Inc. [781] 935-5150
Fax [617] 824-4579
Email sales@alphaind.com
www.alphaind.com
Specifications subject to change without notice. 3/99A
-4.0
-3.8
-3.6
-3.4
-3.2
-3.0
I
n
s
e
r
t
i
o
n
L
o
s
s
(
d
B
)
Insertion Loss vs. Frequency
Port 1
Port 2
1.70
1.75
1.80
1.85
1.90
1.95
2.00
Frequency (GHz)
I
s
o
l
a
t
i
o
n
(
d
B
)
Isolation vs. Frequency
-30
-25
-20
-15
-10
-5
0
1.70
1.75
1.80
1.85
1.90
1.95
2.00
Frequency (GHz)
1.0
1.1
1.2
1.3
1.4
1.5
O
u
t
p
u
t
V
S
W
R
Output VSWR vs. Frequency
1.70
1.75
1.80
1.85
1.90
1.95
2.00
Frequency (GHz)
-0.10
0.00
-0.05
0.05
0.10
A
m
p
.
B
a
l
a
n
c
e
(
d
B
)
Amp. Balance vs. Frequency
1.70
1.75
1.80
1.85
1.90
1.95
2.00
Frequency (GHz)
1.0
1.1
1.2
1.3
1.4
1.5
I
n
p
u
t
V
S
W
R
Input VSWR vs. Frequency
1.70
1.75
1.80
1.85
1.90
1.95
2.00
Frequency (GHz)
-3
-2
-1
0
1
2
3
P
h
a
s
e
B
a
l
a
n
c
e
(
D
e
g
.
)
Phase Balance vs. Frequency
1.70
1.75
1.80
1.85
1.90
1.95
2.00
Frequency (GHz)
Typical Performance Data
Two-Way 0 Power Splitter Combiner 1.711.99 GHz
PD18-12
Alpha Industries, Inc. [781] 935-5150
Fax [617] 824-4579
Email sales@alphaind.com
www.alphaind.com
3
Specifications subject to change without notice. 3/99A
Recommended Board Layout
0.020 DIA.
VIA 3 PLACES
P
D
1
8
,,,,
,,,,
,,,,
,,,,
,,,,
,,,
,,,
,,,
,,,
,,,
,,,,
,,,,
,,,,
,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,
,,,,,,
,,,,,,
0.170
0.029 TYP.
0.018
TYP.
0.028
TYP.
Material is 10 mil FR4
SOIC-8
0.049
(1.24 mm)
0.016
(0.41 mm)
0.016 MAX.
(0.41 mm) x
45 CHAMFER
PIN 1
0.197 (5.00 mm)
0.189 (4.80 mm)
0.068
(1.73 mm) MAX.
0.010 (0.25 mm)
0.004 (0.10 mm)
0.010 (0.25 mm)
0.007 (0.17 mm)
0.158 (4.00 mm)
0.150 (3.80 mm)
8
MAX.
0.020 (0.51 mm) MAX.
0.244 (6.20 mm)
0.228 (5.80 mm)
0.050 (1.27 mm) BSC
PIN 8
PIN 1
INDICATOR
Characteristic
Value
Input Power
1
1.5 W CW
Input Power
2
0.75 CW
Operating Temperature
-40C to +85C
Storage Temperature
-65C to +150C
Absolute Maximum Ratings
1. When used as a power divider with a 2.0:1 maximum VSWR on all ports.
2. When used as a power combiner with a 2.0:1 maximum VSWR on all ports.
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