Directional Coupler Alternatives Reference Design contains the LTC4401-1 Power Controller and Hitachi PF08107B Dual-Band Power Amplifier

Board contains the LTC4401-1 power controller and Hitachi PF08107B dual-band power amplifier as well as a Murata dual band directional coupler and Murata diplexer. The directional coupler has a coupling loss of 14±1.5dB for the DCS frequencies and 19±1dB for the GSM frequencies