Directional Couplers
20 to 1000MHz
DBTC-20-4
50Ω
Maximum Ratings
Features
3
•
•
•
•
•
•
•
OUTPUT
4
Applications
COUPLED
1
GROUND
2
• VHF/UHF receivers/transmitters
• cellular
Operating Temperature
-40°C to 85°C
Storage Temperature
-55°C to 100°C
Pin Connections
INPUT
NOT USED*
very flat coupling
very broadband, multi octave
temperature stable, BLUE CELL™ base
all welded construction
micro-miniature coupler, 0.15"X0.15"X0.15"
protected by patent 6,140,887
additional patent pending
BLUE CELLTM
LTCC Base Only
CASE STYLE: AT790-1
PRICE: $1.99 ea. QTY (25)
5,6
Directional Coupler Electrical Specifications
*pins 5&6 must be isolated
Outline Drawing
FREQ.
RANGE
(MHz)
COUPLING
(dB)
fL-fU
Nom.
Max.
Flatness
20-1000
20.4±0.6
±0.8
MAINLINE LOSS*
(dB)
DIRECTIVITY
(dB)
L
Typ. Max.
M
U
Typ. Max. Typ. Max.
0.3
0.4 1.0
1.0
* Includes theoretical coupled power loss of 0.04 dB at 20 dB coupling.
** For coupled port VSWR above 500 MHz, 1.6:1 typ.
0.7 1.3
L
Typ. Min.
21
M
Typ. Min.
13
L = low range [fL to 10 fL]
21
VSWR**
(:1)
U
Typ. Min.
14
16
—
M = mid range [10 fL to fU/2]
POWER
INPUT, W
Typ.
L
Max.
MU
Max.
1.20
1.0
1.0
U = upper range [fU/2 to fU]
Typical Performance Data
Insertion Loss
(dB)
In-Out
20.00
100.00
200.00
300.00
400.00
C
.150
3.81
H
.050
1.27
J
.160
4.06
K
.030
0.76
D
.050
1.27
E
.030
0.76
F
.025
0.64
G
.028
0.71
500.00
0.48
600.00
0.53
700.00
0.58
800.00
0.63
1000.00
0.70
BLUE CELL™ is protected by U.S. Patents.
wt.
grams
.10
Reflow Solder Assembly
Silver-bearing solder (Sn/Pb/Ag 62/36/2%) is recommended;
however, tin-lead eutectic (Sn/Pb 63/37%) may be used.
For temperature profiles, see Application Note AN-40-004
Demo Board MCL P/N: TB-102
Suggested PCB Layout (PL-020)
at RF level of -10 dBm
0.80
INSERTION LOSS (dB)
B
.150
3.81
0.33
0.35
0.38
0.41
0.43
Directivity
(dB)
In
Return Loss
(dB)
Out
20.30
20.25
20.28
20.32
20.36
19.79
22.11
23.36
24.66
25.00
28.00
29.28
29.12
27.95
27.01
30.48
31.80
30.13
28.09
26.54
26.85
27.18
24.16
21.44
19.23
20.40
20.43
20.50
20.59
20.94
23.74
21.33
19.06
17.10
14.20
26.41
25.99
25.78
26.16
28.41
25.97
25.74
26.00
26.88
29.64
17.30
15.69
14.31
13.07
11.03
DBTC-20-4
INSERTION LOSS
0.70
20.9
0.60
20.8
0.50
0.40
0.30
20.3
0.00
20.2
400
600
800
25
20
15
20.5
0.10
200
1000
10
5
COUPLING
0
200
FREQUENCY (MHz)
35
at RF level of -10 dBm
400
600
DIRECTIVITY
800
0
1000
FREQUENCY (MHz)
DBTC-20-4
RETURN LOSS
designers kits available
30
RETURN LOSS (dB)
30
20.6
20.4
Cpl
DBTC-20-4
COUPLING
20.7
0.20
0
at RF level of -10 dBm
21.0
COUPLING (dB)
Outline Dimensions ( inch
mm )
A
.150
3.81
Coupling
(dB)
In-Cpl
DIRECTIVITY (dB)
Frequency
(MHz)
Kit
No.
25
20
No. of
Units in Kit
K1-DBTC
25
K2-DBTC
20
15
10
Description
5 of each: DBTC-9-4, DBTC-12-4
DBTC-13-4, DBTC-17-5, DBTC-20-4
5 of each: DBTC-10-4-75, DBTC-13-5-75
DBTC-16-5-75, DBTC-18-4-75
5
IN
OUT
COUPLING
0
0
200
400
600
800
1000
FREQUENCY (MHz)
® P.O. Box 350166, Brooklyn, New York 11235-0003 (718) 934-4500 Fax (718) 332-4661
For quick access to product information see MINI-CIRCUITS CATALOG & WEB SITE
TM
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ISO 9001 ISO 14001
CERTIFIED
Price $
per Kit
49.95
39.95