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
Directional Coupler 0.810.96 GHz
Features
s
Low Cost
s
Low Profile
s
Available in Small SOT-6 Lead Package
s
Tape & Reel
DC09-73
Description
The DC09-73 is a monolithic directional coupler tailored
to the 0.810.96 GHz band. It offers low loss, good
isolation, good input/output matching and exceptional
coupling repeatability. It is available in the SOT-6 lead
surface mount package.
Parameter
Min.
Typ.
Max.
Unit
Frequency
0.81
0.96
GHz
Insertion Loss
0.2
0.3
dB
Isolation
27
30
dB
Input VSWR
1.1:1
1.3:1
Output VSWR
1.1:1
1.3:1
Coupling
20.8
19.8
18.8
dB
Coupled Port VSWR
1.1:1
1.3:1
Electrical Specifications at 25C
IN
GND
COUPLED
OUT
GND
GND
12
3
65
4
DC09
Pin Out
Out
Coupled
In
Block Diagram
Directional Coupler 0.810.96 GHz
DC09-73
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
-0.50
-0.40
-0.30
-0.20
-0.10
-0.00
0.80
0.85
0.90
0.95
1.00
Frequency (GHz)
I
n
s
e
r
t
i
o
n
L
o
s
s
(
d
B
)
Insertion Loss vs. Frequency
0.80
0.85
0.90
0.95
1.00
-40
-30
-20
-10
0
Frequency (GHz)
I
s
o
l
a
t
i
o
n
(
d
B
)
Isolation vs. Frequency
1.0
1.1
1.2
1.3
1.4
1.5
Frequency (GHz)
O
u
t
p
u
t
V
S
W
R
Output VSWR vs. Frequency
0.80
0.85
0.90
0.95
1.00
0.80
0.85
0.90
0.95
1.00
1.0
1.1
1.2
1.3
1.4
1.5
Frequency (GHz)
C
o
u
p
l
e
d
P
o
r
t
V
S
W
R
Coupled Port VSWR vs. Frequency
0.80
0.85
0.90
0.95
1.00
1.0
1.1
1.2
1.3
1.4
1.5
Frequency (GHz)
I
n
p
u
t
V
S
W
R
Input VSWR vs. Frequency
0.80
0.85
0.90
0.95
1.00
-25
-24
-23
-22
-21
-20
-19
-18
Frequency (GHz)
C
o
u
p
l
i
n
g
(
d
B
)
Coupling vs. Frequency
Typical Performance Data
Directional Coupler 0.810.96 GHz
DC09-73
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
Characteristic
Value
Input Power
1
4.0 W CW
Operating Temperature
-40C to +85C
Storage Temperature
-65C to +150C
Absolute Maximum Ratings
1. When operating with a 2.0:1 maximum VSWR on all ports.
SOT-6
0.074
(1.90 mm REF.)
0.071 (1.80 mm)
0.052 (1.30 mm)
0.037 (0.95 mm) REF.
0.122 (3.10 mm)
0.106 (2.70 mm)
0.006
(0.15 mm)
0.000
(0.00 mm)
0.057 (1.45 mm)
0.035 (0.90 mm)
0.020 (0.51 mm)
0.014 (0.350 mm)
0.126 (3.20 mm)
0.087 (2.20 mm)
PIN 6
PIN 1
PIN 1
INDICATOR
0.022 (0.61 mm)
0.004 (0.10 mm)
0.014
(0.26 mm)
0.004
(0.10 mm)
0.012
(0.30 mm)
TYP.
5.0 1
5.0 1
Recommended Board Layout
Material is 10 mil FR4
,,,,,,
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,,,,
,,,,
,,,,
,,,,
,,,,
,,,,
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,,,,
,,,,,,
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,,,,,,
0.075
0.015 TYP.
0.020 DIA.
VIA 3 PLACES
0.039 TYP.
0.018 TYP.
0.020
D
C
0
9
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