Patent ID: 7203470

Claim:
An in-phase combining diversity receiving apparatus comprises: a first signal adjusting unit for amplifying a first signal received by a first antenna and phase-shifting said amplified first signal; a second signal adjusting unit for amplifying a second signal received by a second antenna and phase-shifting said amplified second signal; a combiner for combining output signals of the first and second signal adjusting units; a frequency converter for converting the combined signal into an intermediate frequency (IF) signal; an IF signal processor for processing the IF signal and converting it into a baseband signal; and a controller for measuring powers of an original receiving signal, the first signal and the second signal on the basis of the baseband signal, and controlling the first and second signal adjusting units, wherein the controller controls the first and second signal adjusting units so that if a measured power difference between the first and the second signals is greater than a threshold value, the signal with a stronger power is amplified to a normal level, while the signal with a weaker power is amplified to a low level.