In an image rejection mixer of a receiving device of the invention, when a
signal of a first radio frequency band is input to input terminal, first
mixer and second mixer convert the input signal of the first radio
frequency band into a signal of a first intermediate frequency band by
the use of a first local signal from local signal oscillation unit and a
filter circuit attenuates an image disturbing signal existing in the
first intermediate frequency band, and when a signal of a second radio
frequency band is input to the input terminal, first mixer and second
mixer convert the input signal of the second radio frequency band into a
signal of a second intermediate frequency band by the use of a second
local signal from the local signal oscillation unit and the filter
circuit attenuates an image disturbing signal existing in the second
intermediate frequency band. The first intermediate frequency band and
the second intermediate frequency band are partly overlapped with each
other.