ALPHA DC17-73 Datasheet
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
Features
■ Low Cost
■ Low Profile
■ Small SOT-6 Package
■ Tape & Reel
DC17-73
Description
The DC17-73 is a monolithic directional coupler for low
cost wireless applications.It offers lo w loss, good isolation,
good input/output matching and exceptional coupling
repeatability .Performance specified for two diff erent bands .
It is available in the SOT-6 lead surface mount package.
Parameter Min. Typ. Max. Unit Min. Typ. Max. Unit
Frequency 1.42 1.66 GHz 1.71 1.99 GHz
Insertion Loss
1
.60 .70 dB .75 .85 dB
Isolation 21 22 dB 20 21 dB
Input VSWR 1.1:1 1.3:1 1.1:1 1.3:1
Output VSWR 1.1:1 1.3:1 1.1:1 1.3:1
Coupling 10.8 11.8 12.8 dB 9.3 10.3 11.3 dB
Coupled Port VSWR 1.2:1 1.3:1 1.25:1 1.35:1
Electrical Specifications at 25°C
123
654
GND
GND
COUPLED
OUT
GND
RF IN
DC17
Pin Out
1
2
3
6
5
4
Block Diagram
1. Coupling loss included.
Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email sales@alphaind.com • www.alphaind.com 2
Specifications subject to change without notice. 3/99A
Directional Coupler DC17-73
Frequency (GHz)
-2.5
-2.0
-1.5
-1.0
-0.5
0.0
Insertion Loss (dB)
Insertion Loss vs. Frequency
0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7 3.0
Frequency (GHz)
-40.0
-24.0
-32.0
-16.0
-8.0
0.0
Isolation (dB)
Isolation vs. Frequency
0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7 3.0
Frequency (GHz)
1.0
1.1
1.2
1.3
1.4
1.5
Output VSWR
Output VSWR vs. Frequency
0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7 3.0
Frequency (GHz)
1.0
1.1
1.2
1.3
1.4
1.5
Coupled Port VSWR
Coupled Port VSWR vs. Frequency
0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7 3.0
Frequency (GHz)
1.0
1.1
1.2
1.3
1.4
1.5
Input VSWR
Input VSWR vs. Frequency
0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7 3.0
Frequency (GHz)
-30.0
-25.0
-20.0
-15.0
-10.0
-5.0
Coupling (dB)
Coupling vs. Frequency
0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7 3.0
Typical Performance Data
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