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001-01/ 20070830 /e8balun_hhm.fm
• All specifications are subject to change without notice.
Multilayer Baluns, HHM Series
HHM1518A3 For DCS-PCS/Tx-Rx
SHAPES AND DIMENSIONS/CIRCUIT
TERMINAL FUNCTIONS
RECOMMENDED PCB PATTERN ELECTRICAL CHARACTERISTICS
FREQUENCY CHARACTERISTICS
Unbalance 50Ω/Balance 150Ω
RETURN LOSS
INSERTION LOSS
AMPLITUDE BALANCE
PHASE BALANCE
1 Unbalanced Port
2 GND or DC feed+ RF GND
3 Balanced Port
4 Balanced Port
5GND
6N.C.
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
123
564
Unbalanced
input
50Ω
Balanced
output
150Ω
0.2
0.3
0.4
0.3
0.8 0.6 0.8
0.9
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
Unbalanced impedance 50Ω
Balanced impedance 150Ω
Frequency range 1710 to 1990MHz
Unbalanced port return loss 10dB min.
Phase impedance at balanced port 180±10deg.
Amplitude impedance 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
–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
123
–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
123
1600 1650 1700 1750 1800 1850 1900 1950 2000 2050 2100
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
23
1
1600 1650 1700 1750 1800 1850 1900 1950 2000 2050 2100
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.
123
Frequency(MHz)
1600 1650 1700 1750 1800 1850 1900 1950 2000 2050 2100