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001-02 / 20130901 / rf_coupler_hhm2914a1_en.fm
• All specifications are subject to change without notice.
Multilayer Chip Directional Couplers
For 2.4GHz W-LAN
HHM Series HHM2914A1
SHAPES AND DIMENSIONS
RECOMMENDED PC BOARD PATTERNS
ELECTRICAL CHARACTERISTICS
1 25°C
2 Operating temperature
Frequency range 2400 to 2500MHz
Coupling factor 21.2±1.0dB
Insertion loss 0.20dB max.1
0.25dB max.2
Isolation 35dB min.
VSWR 1.3 max.
Temperature range Operating –40 to +85°C
Storage –40 to +85°C
Conformity to RoHS Directive
Dimensions in mm
43
12
0.5±0.15
1.0±0.05
0.5±0.050.4max.
0.3±0.15
1 Coupling
250Ω term
3 Output
4 Input
Terminal functions
0.1+0.10
–0.05
0.25+0.15
–0.10
0.40.15
0.350.1
Dimensions in mm
•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 / 20130901 / rf_coupler_hhm2914a1_en.fm
• All specifications are subject to change without notice.
FREQUENCY CHARACTERISTICS
COUPLING
INSERTION LOSS
ISOLATION
VSWR
–25
–30
–35
2700
–20
–15
–10
–5
0
Coupling factor(dB)
Frequency(MHz)
1: 2400MHz
–21.5dB
2: 2450MHz
–21.3dB
3: 2500MHz
–21.1dB
–40
2200 26002300 2400 2500
123
2700
1: 2400MHz
–0.05dB
2: 2450MHz
–0.05dB
3: 2500MHz
–0.05dB
2200 26002300 2400 2500
–1.0
–0.8
–0.4
–0.6
–0.2
0
Insertion loss(dB)
Frequency(MHz)
123
27002200 26002300 2400 2500
Isolation & Directivity(dB)
Frequency(MHz)
Isolation
:
1: 2400MHz
–43.6dB
2: 2450MHz
–43.7dB
3: 2500MHz
–43.7dB
Directivity
:
1: 2400MHz
–22.2dB
2: 2450MHz
–22.4dB
3: 2500MHz
–22.6dB
–25
–30
–35
–45
–20
–15
–10
–5
0
–50
–40
12
2
3
13
2700
1: 2400MHz
1.02
2: 2450MHz
1.02
3: 2500MHz
1.02
2200 26002300 2400 2500
123
1.2
1.4
1.6
1.8
1.0
2.0
VSWR
Frequency(MHz)
