Manual de instrucciones de TDK DVB-H/ISDB-T

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0.7
(1/2)
Conformity to RoHS Directive
Multilayer Chip Baluns
For DVB-H/ISDB-T
HHM Series HHM1591A2
SHAPES AND DIMENSIONS
2.0±0.15 0.95±0.1
654
123
Terminal functions
0.65±0.2 0.3±0.2
1 Unbalanced port
2 GND or DC feed+ RF GND
3 Balanced port
4 Balanced port
5 GND
6 N.C.
0.2±0.2 0.35±0.2 Dimensions in mm
CIRCUIT DIAGRAM
64 5
Unbalanced Balanced
input output
50Ω 100Ω
12 3
RECOMMENDED PC BOARD PATTERNS
0.3 0.2
This width is 50Ω .
Micro-strip line for 0.4mm thick
glass-epoxy substrate.
65 4
12 3
ø

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(2/2) FREQUENCY CHARACTERISTICS Unbalance 50Ω /Balance 100Ω RETURN LOSS AMPLITUDE BALANCE 5 0 1: 350.0MHz 1: 350.0MHz 4 –5 –0.43dB –6.73dB 3 1 2: 650.0MHz –10 2: 650.0MHz 2 –17.05dB 0.19dB 3 –15 1 3: 950.0MHz 3: 950.0MHz 0 2 3 –20 –12.20dB 0.61dB 2 –1 1 –25 –2 –30 –3 –35 –4 –5 –40 300 400 500 600 700 800 900 100011001200 300 400 500 600 700 800 900 100011001200 Frequency(MHz) Frequency(MHz) INSERTION LOSS PHASE BALANCE 0.0 200 1: 350.0MHz 1: 350.0MHz –0.5 –2.20dB 178