RADIO COMMUNICATION EQUIPMENT

摘要

PURPOSE: To suppress the power consumption while keeping the signal quality good in the radio communication equipment which uses carriers of the same frequency to alternately perform transmission and reception in the digital radio communication. CONSTITUTION: A gain control means 1 which suppresses the level variance of a reception signal by a control voltage A(t) corresponding to this level variance to control the gain of the reception signal to a fixed value, a demodulating means 2 which uses a reproduced carrier signal Sc to synchronously demodulate the output signal from the gain control means 1, an orthogonal detection means 4 which uses a detection signal having the same frequency to orthogonally detect the reproduced carrier signal Sc and outputs in-phase and orthogonal base band signals Cx(t) and Cy(t), and a transmission power control means 5 which controls the transmission power of a transmission signal most suitably based on in-phase and orthogonal base band signals Cx(t) ana Cy(t) ana the control voltage A(t) of the gain control means are provided.