(1/2) Multilayer Chip Directional Couplers For PCS/Tx Conformity to RoHS Directive HHM Series HHM2918A1 0.1+0.10 –0.05 SHAPES AND DIMENSIONS 0.3±0.15 3 1 2 0.5±0.15 0.4max. 0.5±0.05 1.0±0.05 4 0.25 +0.15 –0.10 Terminal functions 1 Coupling 2 50Ω term 3 Output 4 Input Dimensions in mm RECOMMENDED PC BOARD PATTERNS 0.4 0.1 0.35 0.15 Dimensions in mm ELECTRICAL CHARACTERISTICS Frequency range Coupling factor Insertion loss Isolation VSWR Temperature range 1 2 Operating Storage 1850 to 1980MHz 12.7±1.0dB 0.55dB max.1 0.6dB max.2 32dB min. 1.4 max. –40 to +85°C –40 to +85°C 25°C Operating temperature • 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 / 20130901 / rf_coupler_hhm2918a1_en.fm (2/2) 1 1800 2 3 1900 2000 Frequency (MHz) ISOLATION & DIRECTIVITY 1: 1850MHz 13.0dB 2: 1910MHz 12.8dB 3: 1980MHz 12.5dB 2100 INSERTION LOSS Insertion loss (dB) 0.2 1 0 10 20 30 40 50 1700 2 3 1: 1850MHz 0.38dB 2: 1910MHz 0.40dB 3: 1980MHz 0.42dB 0.6 2 3 1 2 3 1900 2000 Frequency (MHz) 2.0 Directivity : 1: 1850MHz 26.4dB 2: 1910MHz 26.9dB 3: 1980MHz 26.5dB 2100 1.6 1.4 1.2 1.0 1700 1.0 1700 1900 2000 Frequency (MHz) 2100 1: 1850MHz 1.23 2: 1910MHz 1.24 3: 1980MHz 1.24 1.8 0.8 1800 1800 1 Isolation : 1: 1850MHz 39.5dB 2: 1910MHz 39.6dB 3: 1980MHz 39.0dB VSWR 0 0.4 Isolation & Directivity(dB) 0 5 10 15 20 25 30 35 40 1700 VSWR Coupling factor(dB) FREQUENCY CHARACTERISTICS COUPLING 1 1800 2 3 1900 2000 Frequency (MHz) 2100 • All specifications are subject to change without notice. 001-02 / 20130901 / rf_coupler_hhm2918a1_en.fm