Apparatus for detecting output power in dual-mode portable wireless terminal

Abstract

Disclosed is an apparatus for detecting an output power in a dual-mode portable wireless terminal. The apparatus includes a first coupler for coupling a signal that passes through a first transmission signal path; a second coupler for coupling a signal that passes through a second transmission signal path; a power combiner for combining coupled signals that are respectively output from the first coupler and the second coupler; and a power detector for outputting a DC voltage based on a power level of an output signal of the power combiner. When a power detection circuit chip having one input port is used, the power detection for two transmission paths can be achieved using one chip. Thus, the circuit size can be remarkably reduced.

Dependencies are inferred from the claim text.