RF Transformer
17dB directional coupler
recommended frequency range: 47MHz – 862MHz
Test conditions and circuit diagram:
Circuit diagram of directional coupler:
DL 3,6
B78408-A1499-A3
Test arrangement for directional coupler:
Measurement instrument: Network Analyser
Test platina: RK751
Impedance: 75
Ω
1
6
Output (A)
1
6
Input (E)
2
5
2
5
branch (Ab)
3
4
75
Ω
3
4
Typical attenuation values:
Measurement according the the above shown measurement circuit
(values can be specified after evaluation of the first series)
Attenuation
[dB]
E/A
E/Ab
[ f / MHz ]
47
0.4
±
0.5
17.5
±
0.5
862
<1.3
16.0
±
1.5
EPCOS IN TC
Page 1 of 2
26.08.03
RF Transformer
17dB directional coupler
recommended frequency range: 47MHz – 862MHz
Dimensions and Layout:
schematical drawing
with housing
DL 3,6
B78408-A1499-A3
D
H
D
3
4
3
5
2
L
1
6
1
L
H
1
D
1
B
1
B
Dimensions (mm):
L
L
1
B
5,6
–0,1
3,6
4,5
–0,1
1)
max. dimensions
B
1
2,5
H
3,4
1)
H
1
3,9
1)
D
6,9
1)
D
1
7,3
D
2
5,1
1.5
D
2
1.0
Packing:
Packaging unit: 2.100 pieces/reell
Packaging into blister tape acc. DIN IEC 286-3
blister tape 12 mm on reel 330 mm
Coplanarity < 0,2mm
EPCOS AG 2003. Reproduction, publication and dissemination of this data sheet, enclosures hereto and the information
contained therein without EPCOS' prior express consent is prohibited.
Purchase orders are subject to the General Conditions for the Supply of Products and Services of the Electrical and
Electronics Industry recommended by the ZVEI (German Electrical and Electronic Manufacturers' Association), unless
otherwise agreed.
EPCOS IN TC
Page 2 of 2
1.5
D
3
7,1
1)
26.08.03
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