Directional Coupler
50Ω
Maximum Ratings
Operating Temperature
Storage Temperature
Coaxial
ZFDC-20-50+
20 to 2000 MHz
-55°C to 100°C
-55°C to 100°C
Features
Permanent damage may occur if any of these limits are exceeded.
Coaxial Connections
INPUT
OUTPUT
COUPLED
3
1
2
• very wideband, 20 to 2000 MHz
• excellent directivity, 25 dB typ.
• excellent mainline loss, 0.7 dB typ.
• rugged shielded case
CASE STYLE: K18
Connectors Model
SMA
ZFDC-20-50-S+
BRACKET (OPTION"B")
Price
$64.95
$5.00
Qty.
(1-9)
(1+)
Applications
• cellular
• GPS
• instrumentation
• communication receivers & transmitters
+RoHS Compliant
The +Suffix identifies RoHS Compliance. See our web site
for RoHS Compliance methodologies and qualifications
Directional Coupler Electrical Specifications
Outline Drawing
FREQ.
RANGE
(MHz)
f
L
-f
U
20-2000
COUPLING*
(dB)
L
Nom.
19.5±0.5
Flatness
±0.8
MAINLINE LOSS
1
(dB)
M
U
L
DIRECTIVITY
(dB)
M
Min.
20
Typ.
25
Min.
20
Typ.
22
U
Min.
10
VSWR
(:1)
POWER
INPUT
(W)
L
MU
Max.
1.0
Max.
1.0
Typ. Max. Typ. Max. Typ. Max. Typ.
0.8
1.3
0.7
1.3
1.0
1.6
30
Typ.
1.25
L = low range [f
L
to 10 f
L
]
M = mid range [10 f
L
to f
U
/2]
U= upper range [f
U
/2 to f
U
]
1. Mainline loss includes theoretical power loss at coupled port.
* Above 1000 MHz, coupling flatness
±1
dB
Typical Performance Data
Frequency
(MHz)
20.00
50.00
80.00
100.00
300.00
1000.00
1200.00
1400.00
1600.00
1800.00
2000.00
at RF level of -10 dBm
Mainline Loss
(dB)
In-Out
0.82
0.65
0.65
0.60
0.66
0.86
1.00
1.09
1.27
1.34
1.46
ZFDC-20-50+
MAINLINE LOSS
Coupling
(dB)
In-Cpl
19.36
19.21
19.19
19.14
19.18
19.37
19.40
19.40
19.35
19.36
19.37
Directivity
(dB)
29.25
33.94
34.88
35.01
31.17
23.02
22.32
21.99
21.75
21.00
19.19
In
17.95
21.29
22.44
22.93
25.70
24.12
20.46
17.71
15.67
14.04
12.70
Return Loss
(dB)
Out
19.33
23.63
25.39
26.11
28.22
32.91
32.70
30.28
27.28
24.37
21.84
Cpl
21.82
24.42
25.30
25.66
28.13
28.50
24.27
21.55
19.50
17.79
16.24
Outline Dimensions (
inch
)
mm
A
1.25
31.75
J
--
--
B
1.25
31.75
K
--
--
C
.75
19.05
L
.125
3.18
D
.63
16.00
M
1.688
42.88
E
.38
9.65
N
2.18
55.37
F
1.00
25.40
P
.75
19.05
G
.125
3.18
H
1.000
25.40
Q
wt
.07 grams
1.78
70.0
ZFDC-20-50+
COUPLING & DIRECTIVITY
60
COUPLING & DIRECTIVITY
(dB)
50
40
30
20
10
0
0
400
800
1200
FREQUENCY (MHz)
1600
2000
at RF level of -10 dBm
2.0
MAINLINE LOSS (dB)
1.6
1.2
0.8
0.4
0.0
COUPLING
DIRECTIVITY
0
400
800
1200
FREQUENCY (MHz)
1600
2000
ZFDC-20-50+
RETURN LOSS
60
RETURN LOSS (dB)
50
40
30
20
10
0
0
400
800
1200
FREQUENCY (MHz)
1600
2000
®
at RF level of -10 dBm
Electrical Schematic
IN
OUT
CPL
ISO 9001 ISO 14001 AS 9100
CERTIFIED
P.O. Box 350166, Brooklyn, New York 11235-0003 (718) 934-4500 Fax (718) 332-4661
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Notes: 1.
Performance and quality attributes and conditions not expressly stated in this specification sheet are intended to be excluded and do not form a part of this specification sheet.
2.
Electrical specifications
and performance data contained herein are based on Mini-Circuit’s applicable established test performance criteria and measurement instructions.
3.
The parts covered by this specification sheet are subject to
Mini-Circuits standard limited warranty and terms and conditions (collectively, “Standard Terms”); Purchasers of this part are entitled to the rights and benefits contained therein. For a full statement of the Standard
Terms and the exclusive rights and remedies thereunder, please visit Mini-Circuits’ website at www.minicircuits.com/MCLStore/terms.jsp.
REV. C
M119986
ZFDC-20-50+
WZ/TD/CP/AM
120927
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