The DCPL-WB-00D3 is a wide-band, dual-path directional coupler with ISO port designed to measure cell phone transmission output power in GSM/WCDMA applications. This dual path CPL has been customized for wide-band operating frequencies (EGSM and CELL, PCS, DCS, WCDMA band I) with less than 0.2 dB insertion losses in the transmission bandwidth (824 MHz - 1980 MHz).