CIRCUIT CAPABLE OF EXTENDING DYNAMIC RANGE OF RADIO-FREQUENCY OUTPUT POWER OF 5.8 GHZ FREQUENCY BAND

摘要

A circuit capable of extending a dynamic range of the radio-frequency output power of a 5.8 GHz frequency band, the circuit comprising a radio-frequency chip, a plurality of stages of radio-frequency power amplifiers (G1,..., Gn) and a radio-frequency output unit which are connected in sequence. The radio-frequency chip is used for outputting a radio-frequency signal of a 5.8 GHz frequency band. The plurality of stages of radio-frequency power amplifiers (G1,..., Gn) are used for performing gradual amplification processing on the radio-frequency signal of the 5.8 GHz frequency band. Short circuit switches (S1,..., Si) are connected in parallel to two ends of at least one stage of radio-frequency power amplifier of the plurality of stages of radio-frequency power amplifiers (G1,..., Gn). When the short circuit switches (S1,..., Si) are closed, corresponding radio-frequency power amplifiers (G1,..., Gn) can be short-circuited. States of the short circuit switches (S1,..., Si) depend on a power level of the radio-frequency signal of the 5.8 GHz frequency band. The radio-frequency output unit is used for outputting the amplified radio-frequency signal of the 5.8 GHz frequency band. The circuit extends a dynamic range of output power.