Coaxial
ZDC-20-3-75+
ZDC-20-3-75
Directional Coupler
75Ω
1 to 150 MHz
Maximum Ratings
Operating Temperature -55°C to 100°C
Storage Temperature -55°C to 100°C
Features
• excellent mainline loss, 0.35 dB typ.
• excellent directivity, 25 dB typ.
• rugged shielded case
Permanent damage may occur if any of these limits are exceeded.
CASE STYLE: M22
ConnectorsModel
BNCZDC-20-3-75(+)
BRACKET (OPTION"B")
BRACKET (OPTION"BR")
Coaxial Connections
Applications
INPUT3
• HF/VHF
OUTPUT2
• instrumentation
COUPLED1
+RoHS Compliant
• amateur radio
The +Suffix identifies RoHS Compliance. See our web site
for RoHS Compliance methodologies and qualifications
Directional Coupler Electrical Specifications
FREQ.
RANGE
(MHz)
Outline Drawing
COUPLING
(dB)
MAINLINE LOSS1
(dB)
L
fL-fU
Nom.
Flatness
1-150
19.5±0.5
±0.75
M
DIRECTIVITY
(dB)
U
L
Typ. Max. Typ. Max. Typ. Max. Typ.
0.35
0.8
0.35
0.8
0.35
0.8
VSWR
(:1)
M
POWER
INPUT
(W)
L
MU
Min.
Typ.
Min.
Typ.
Min.
Typ.
Max.
Max.
20
25
20
25
20
2.0
2.0
4.0
25
U
L = low range [fL to 10 fL]
M = mid range [10 fL to fU/2]
U= upper range [fU/2 to fU]
1. Mainline loss includes theoretical power loss at coupled port.
Typical Performance Data
Frequency
(MHz)
Outline Dimensions ( inch
mm )
A
2.25
57.15
B
1.38
35.05
C
1.24
31.50
D
.50
12.70
E
.150
3.81
F
3.100
78.74
G
.138
3.51
H
1.238
31.45
J
3.25
82.55
K
.10
2.54
L
.40
10.16
M
1.15
29.21
N
1.86
47.24
P
.64
16.26
S
wt
.150 grams
3.81
74.0
Mainline Loss
(dB)
In-Out
Coupling
(dB)
In-Cpl
Directivity
(dB)
In
Return Loss
(dB)
Out
Cpl
1.00
1.93
9.94
20.00
46.82
0.45
0.36
0.30
0.30
0.34
19.46
19.46
19.35
19.39
19.37
41.58
47.84
56.88
43.82
35.25
25.9724.0424.88
29.6226.3727.44
32.9430.1831.33
35.9430.5828.32
34.2929.2822.54
73.64
85.00
119.45
146.09
150.00
0.36
0.37
0.38
0.39
0.39
19.53
19.56
19.51
19.52
19.54
43.57
33.76
31.82
30.86
29.43
30.7828.0418.80
29.9327.7317.77
28.1026.2114.96
28.0825.4713.35
27.9025.0913.11
ZDC-20-3-75
MAINLINE LOSS
70
COUPLING
60
0.6
DIRECTIVITY
50
40
0.4
30
20
0.2
10
0
0.0
0
30
60
90
FREQUENCY (MHz)
120
150
ZDC-20-3-75
RETURN LOSS
60
RETURN LOSS (dB)
at RF level of -10 dBm
COUPLING & DIRECTIVITY
(dB)
0.8
MAINLINE LOSS (dB)
ZDC-20-3-75
COUPLING & DIRECTIVITY
at RF level of -10 dBm
0
30
60
90
FREQUENCY (MHz)
120
150
Electrical Schematic
at RF level of -10 dBm
IN
50
OUT
CPL
40
30
20
10
0
0
30
60
90
FREQUENCY (MHz)
120
150
Notes
A. Performance and quality attributes and conditions not expressly stated in this specification document are intended to be excluded and do not form a part of this specification document.
B. Electrical specifications and performance data contained in this specification document are based on Mini-Circuit’s applicable established test performance criteria and measurement instructions.
C. The parts covered by this specification document 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
Mini-Circuits
®
www.minicircuits.com P.O. Box 350166, Brooklyn, NY 11235-0003 (718) 934-4500 [email protected]
REV. C
M151107
ZDC-20-3-75
WZ/TD/CP/AM
151007
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