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001-02 / 20080106 / e751_hhm1518a3.fm
• All specifications are subject to change without notice.
Multilayer Chip Baluns
For DCS-PCS/Tx & Rx
HHM Series HHM1518A3
SHAPES AND DIMENSIONS
0.95±0.1
1.25±0.15
0.65±0.2 0.3±0.2
0.2±0.2 0.35±0.2
2.0±0.15
654
123
Dimensions in mm
0.25
+0.1
–0.2
1 Unbalanced port
2 GND or DC feed+ RF GND
3 Balanced port
4 Balanced port
5 GND
6 N.C.
Terminal functions
CIRCUIT DIAGRAM
123
564
Unbalanced
input
50
Ω
Balanced
output
150Ω
RECOMMENDED PC BOARD PATTERNS
0.2
0.3
0.3
0.8 0.6
0.7
ø0.3 Through-hole
This width is 50Ω.
Micro-strip line for 0.4mm thick
glass-epoxy substrate.
Dimensions in mm
654
123
0.8
ELECTRICAL CHARACTERISTICS
Unbalanced impedance 50Ω
Balanced impedance 150Ω
Frequency range 1710 to 1990MHz
Unbalanced port return loss 10dB min.
Phase imbalance at balanced port 180±10deg.
Amplitude imbalance at balanced port 0±1.0dB
Insertion loss 1.0dB max.
Temperature range
Operating –40 to +85°C
Storage –40 to +85°C
Packaging style and quantities 2000pieces/reel
Conformity to RoHS Directive
• Conformity to RoHS Directive: This means that, in conformity with EU Directive 2002/95/EC, lead, cadmium, mercury, hexavalent chromium, and
specific bromine-based flame retardants, PBB and PBDE, have not been used, except for exempted applications.
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001-02 / 20080106 / e751_hhm1518a3.fm
• All specifications are subject to change without notice.
FREQUENCY CHARACTERISTICS
Unbalance 50Ω/Balance 150Ω
RETURN LOSS
–50
1600 1650 1700 1750 1800 1850 1900 1950 2000 2050 2100
–20
–25
–30
–35
–40
–45
–15
–10
–5
0
Return loss
(
dB
)
Frequency(MHz
)
1: 1710MHz
–20.71dB
2: 1850MHz
–19.68dB
3: 1990MHz
–19.87dB
1
2
3
INSERTION LOSS
–5.0
–4.0
–4.5
–3.0
–3.5
–2.0
–2.5
–1.0
–1.5
–0.5
0.0
Insertion loss
(
dB
)
Frequency(MHz
)
1: 1710MHz
–0.544dB
2: 1850MHz
–0.580dB
3: 1990MHz
–0.611dB
1
2
3
1600 1650 1700 1750 1800 1850 1900 1950 2000 2050 2100
AMPLITUDE BALANCE
2
1
4
3
5
–4
–5
–2
–3
–1
0
Amplitude balance
(
dB
)
Frequency(MHz
)
1: 1710MHz
0.265dB
2: 1850MHz
0.222dB
3: 1990MHz
0.101dB
2
3
1
1600 1650 1700 1750 1800 1850 1900 1950 2000 2050 2100
PHASE BALANCE
155
160
170
180
190
165
175
185
195
205
200
Phase balance
(
deg.
)
1: 1710MHz
177.8deg.
2: 1850MHz
178.9deg.
3: 1990MHz
179.8deg.
1
2
3
Frequency(MHz
)
1600 1650 1700 1750 1800 1850 1900 1950 2000 2050 2100
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