Directional Coupler
75Ω
Maximum Ratings
Operating Temperature
Storage Temperature
Coaxial
ZFDC-10-21-75
10 to 750 MHz
-55°C to 100°C
-55°C to 100°C
Features
• wideband, 10 to 750 MHz
• excellent directivity, 30 dB typ.
• rugged shielded case
CASE STYLE: K18
Connectors Model
BNC
ZFDC-10-21-75
BRACKET (OPTION"B")
Price
$54.95
$2.50
Qty.
(1-9)
(1+)
Coaxial Connections
INPUT
OUTPUT
COUPLED
1
2
3
Applications
• catv
• VHF/UHF
• instrumentation
• communications receivers & transmitters
Directional Coupler Electrical Specifications
Outline Drawing
FREQ.
RANGE
(MHz)
f
L
-f
U
10-750
COUPLING
(dB)
L
Nom.
11±0.5
Flatness
±0.75
MAINLINE LOSS
1
DIRECTIVITY
(dB)
U
L
Min.
30
Typ.
30
M
Min.
20
Typ.
26
U
Min.
20
VSWR
(:1)
POWER
INPUT
(W)
L
MU
Max.
2.0
Max.
1.0
M
Typ. Max. Typ. Max. Typ. Max. Typ.
1.5
1.8
1.5
1.9
1.7
2.1
36
Typ.
1.4
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.
Typical Performance Data
Frequency
(MHz)
10.00
46.00
82.00
140.00
220.00
315.00
390.00
480.00
630.00
750.00
Mainline Loss
(dB)
In-Out
1.39
1.48
1.57
1.63
1.66
1.67
1.67
1.67
1.69
1.71
Coupling
(dB)
In-Cpl
10.96
11.02
11.10
11.17
11.23
11.30
11.36
11.43
11.59
11.72
Directivity
(dB)
60.33
58.37
58.27
54.38
48.45
43.20
39.99
37.62
35.29
33.16
In
24.87
23.71
22.47
21.77
21.57
21.19
20.82
20.32
19.10
18.39
Return Loss
(dB)
Out
16.51
16.08
15.67
15.51
15.68
15.98
16.33
16.73
16.94
16.89
Cpl
16.50
16.15
15.63
15.24
14.99
14.64
14.25
13.67
12.33
11.26
Outline Dimensions (
inch
)
mm
A
1.25
31.75
B
1.25
31.75
C
.75
19.05
D
.63
16.00
E
.38
9.65
F
1.00
25.40
G
.125
3.18
H
1.000
25.40
J
--
--
K
--
--
L
.125
3.18
M
1.688
42.88
N
2.18
55.37
P
.75
19.05
Q
wt
.07 grams
70.0
1.78
ZFDC-10-21-75
MAINLINE LOSS
2.0
MAINLINE LOSS (dB)
1.8
1.6
1.4
1.2
1.0
0
150
300
450
FREQUENCY (MHz)
600
750
at RF level of -10 dBm
ZFDC-10-21-75
COUPLING & DIRECTIVITY
100
COUPLING & DIRECTIVITY
(dB)
80
60
40
20
0
0
150
300
450
FREQUENCY (MHz)
600
750
at RF level of -10 dBm
COUPLING
DIRECTIVITY
ZFDC-10-21-75
RETURN LOSS
50
RETURN LOSS (dB)
40
30
20
10
0
0
150
300
450
FREQUENCY (MHz)
600
750
at RF level of -10 dBm
electrical schematic
CPL
IN
OUT
INPUT
OUTPUT
COUPLED
Distribution Centers
NORTH AMERICA 800-654-7949 • 417-335-5935 • Fax 417-335-5945 • EUROPE 44-1252-832600 • Fax 44-1252-837010
Mini-Circuits
®
INTERNET
http://www.minicircuits.com
P.O. Box 350166, Brooklyn, New York 11235-0003 (718) 934-4500 Fax (718) 332-4661
REV. OR
M93827
ZFDC-10-21-75
WZ/TD/CP
060803
Mini-Circuits
ISO 9001 & ISO 14001
Certified
Embedded System
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