Bi-Directional Coupler
50Ω
Up to 10W
-55°C to 100°C
-55°C to 100°C
Coaxial
ZFBDC20-900HP
800 to 900 MHz
Features
• very low mainline loss, 0.1 dB typ.
• excellent directivity, 28 dB typ.
• excellent VSWR, 1.1: typ.
• high power operation, 10W
Maximum Ratings
Operating Temperature
Storage Temperature
Permanent damage may occur if any of these limits are exceeded.
CASE STYLE: J17
Connectors Model
SMA
ZFBDC20-900HP
BRACKET (OPTION "B")
Price
$79.95
$5.00
Qty.
(1-9)
(1+)
Coaxial Connections
INPUT
OUTPUT
COUPLED (forward)
COUPLED (reverse)
2
3
1
S
Applications
• VSWR measurement
• power monitoring of cellular transmitters
• power levelling
Bi-Directional Coupler Electrical Specifications
Outline Drawing
FREQ.
(MHz)
COUPLING
(dB)
MAINLINE LOSS
1
(dB)
DIRECTIVITY
(dB)
VSWR
(:1)
POWER
INPUT
(W)
Max.
10
f
L
-f
U
800-900
Nom.
20.7±0.6
Flatness
±0.6
Typ. Max.
0.1
0.4
Typ.
28
Min.
20
Typ.
1.1
1. Mainline loss includes theoretical power loss at coupled port.
Typical Performance Data
Frequency
(MHz)
Mainline Loss
(dB)
In-Out
800.00
811.25
830.00
841.25
848.75
0.13
0.11
0.13
0.13
0.13
0.13
0.13
0.13
0.13
0.13
ZFBDC20-900HP
MAINLINE LOSS
0.3
MAINLINE LOSS (dB)
at RF level of -10 dBm
Coupling
(dB)
In-Cpl Fwd
20.24
20.20
20.13
20.08
20.05
20.00
19.96
19.95
19.89
19.86
Out-Cpl Rev
20.31
20.24
20.19
20.15
20.11
20.07
20.03
20.00
19.96
19.91
Directivity
(dB)
Out-Cpl Fwd
27.20
26.84
26.62
26.22
26.10
26.12
25.83
25.57
25.56
25.69
In-Cpl Rev
24.84
25.58
25.41
25.63
25.73
26.00
26.34
26.37
26.84
26.80
In
23.29
23.46
23.69
23.80
23.91
24.05
24.16
24.20
24.38
24.47
Return Loss
(dB)
Out
23.46
23.61
23.88
23.97
24.10
24.22
24.39
24.44
24.62
24.70
Cpl Fwd
27.07
27.44
28.08
28.43
28.69
29.09
29.54
29.58
30.18
30.59
Cpl Rev
27.50
27.82
28.28
28.53
28.74
29.10
29.37
29.44
29.85
30.08
Outline Dimensions (
inch
)
mm
A
B
C
D
1.25
1.25
.75
.63
31.75 31.75 19.05 16.00
J
--
--
K
--
--
E
F
.38 1.000
9.65 25.40
G
H
.125 1.000
3.18 25.40
Q
wt
.07 grams
1.78
75.0
For option B with N-Type connectors, dimension "C" increases to 0.94 inches.
L
M
N
P
.125 1.688
2.18
.75
3.18 42.88 55.37 19.05
860.00
871.25
875.00
890.00
901.25
40
COUPLING & DIRECTIVITY
(dB)
35
30
25
20
15
at RF level of -10 dBm
ZFBDC20-900HP
COUPLING & DIRECTIVITY
COUPLING IN-CPL FWD
DIRECTIVITY OUT-CPL FWD
0.2
0.1
0.0
800
820
840
860
FREQUENCY (MHz)
880
900
10
800
820
840
860
FREQUENCY (MHz)
880
900
ZFBDC20-900HP
RETURN LOSS
35
RETURN LOSS (dB)
at RF level of -10 dBm
Electrical Schematic
IN
30
OUT
CPL FWD
CPL REV
25
20
800
820
840
860
880
900
FREQUENCY (MHz)
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
www.minicircuits.com
P.O. Box 35166, Brooklyn, NY 11235-0003 (718) 934-4500 sales@minicircuits.com
Mini-Circuits
®
REV. B
M124579
ZFBDC-20-900HP
WP/TD/CP/AM
131015
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