Instrukcja obsługi TDK HHM Series HHM2317B3

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(1/2)
Conformity to RoHS Directive
Multilayer Chip Dual-Band Directional Couplers
For GSM/DCS/PCS-Tx
HHM Series HHM2317B3
SHAPES AND DIMENSIONS
2.0±0.15 0.95±0.2
3 21
4 8
Terminal functions
1 Band1 input port
567
2 GND
0.65±0.1 0.3±0.2
3 Band2 input port
450Ω termination
5 Band2 output port
6 GND
7 Band1 output port
8 Monitor output port
Dimensions in mm
0.2±0.2 0.35±0.1
CIRCUIT DIAGRAM
( ) ( )
IN 2 GND IN 1
3 2 1
Monitor
4
8 output
Ω
5 6 7
( ) ( )
OUT 2 GND OUT 1
RECOMMENDED PC BOARD PATTERNS

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(2/2) ELECTRICAL CHARACTERISTICS Band 12 System GSM DCS PCS Frequency range (MHz) 880 to 915 1710 to 1785 1850 to 1910 Coupling factor (dB) –19.0±1.0 –14.0±1.0 –13.5±1.0 Insertion loss (dB)max. 0.30 0.45 0.50 IN1-OUT2 (dB)min. 27 27 27 IN2-OUT1 (dB)min. 25 25 25 ∗ Isolation IN1-IN2 (dB)min. 22 22 22 IN-Load (dB)min. 27 25 24 VSWR max. 1.3 1.3 1.3 Operating (°C) –40 to +85 –40 to +85 –40 to +85 Temperature range Storage (°C) –40 to +85 –40 to +85 –40 to +85 ∗ Isolation between opposite bands is s