TDK HHM1518A3 User Manual

(1/2)

Multilayer Chip Baluns
For DCS-PCS/Tx & Rx

HHM Series HHM1518A3

SHAPES AND DIMENSIONS

2.0± 0.15

654

+0.1

–0.2

123

0.25

0.65± 0.2 0.3± 0.2

0.2± 0.2 0.35± 0.2

CIRCUIT DIAGRAM

Unbalanced
input

50

Ω

0.95± 0.1

Dimensions in mm

564

Balanced
output

150Ω

1.25± 0.15

Terminal functions
1 Unbalanced port

2 GND or DC feed+ RF GND
3 Balanced port
4 Balanced port
5 GND
6 N.C.

Conformity to RoHS Directive

123

RECOMMENDED PC BOARD PATTERNS

0.2

0.8

0.8 0.6

0.7

0.3

654

123

0.3

This width is 50Ω.
Micro-strip line for 0.4mm thick
glass-epoxy substrate.

ø0.3 Through-hole

Dimensions in mm

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

Packaging style and quantities 2000pieces/reel

Operating –40 to +85°C
Storage –40 to +85°C

• 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.

• All specifications are subject to change without notice.

001-02 / 20080106 / e751_hhm1518a3.fm

FREQUENCY CHARACTERISTICS

Unbalance 50Ω/Balance 150Ω

RETURN LOSS

0

–5

–10

)

–15

dB

(

–20
–25
–30
–35

Return loss

–40
–45
–50

1600 1650 1700 1750 1800 1850 1900 1950 2000 2050 2100

1

2

Frequency(MHz

3

)

1: 1710MHz
–20.71dB
2: 1850MHz
–19.68dB
3: 1990MHz
–19.87dB

AMPLITUDE BALANCE

5

)

4

dB

(

3
2
1

0
–1
–2
–3
–4

Amplitude balance

–5

1600 1650 1700 1750 1800 1850 1900 1950 2000 2050 2100

1

2

Frequency(MHz

3

)

1: 1710MHz

0.265dB
2: 1850MHz

0.222dB
3: 1990MHz

0.101dB

(2/2)

INSERTION LOSS

0.0

–0.5

)

–1.0

dB

(

–1.5
–2.0
–2.5
–3.0
–3.5
–4.0

Insertion loss

–4.5
–5.0

1600 1650 1700 1750 1800 1850 1900 1950 2000 2050 2100

1

Frequency(MHz

2

)

PHASE BALANCE

1: 1710MHz

3

–0.544dB
2: 1850MHz
–0.580dB
3: 1990MHz
–0.611dB

205
200

)

195

deg.

(

190
185
180
175
170
165

Phase balance

160
155

1600 1650 1700 1750 1800 1850 1900 1950 2000 2050 2100

1

2

Frequency(MHz

3

)

1: 1710MHz

177.8deg.
2: 1850MHz

178.9deg.
3: 1990MHz

179.8deg.

• All specifications are subject to change without notice.

001-02 / 20080106 / e751_hhm1518a3.fm