McClure, Qualey & Rodack, LLP
Power supply circuit of wireless mobile device
Provided is a power supply circuit for a wireless mobile device having a plurality of power amplification components. The power supply circuit includes: a first DC-DC converter, for providing at least one constant output voltage (which is provided to the power amplification components) and/or at least one DC intermediate voltage; a second DC-DC converter, for providing a DC component of at least one time-varying output voltage; and at least one linear amplifier. When the at least one linear amplifier receives the at least one DC intermediate voltage from the first DC-DC converter, the at least one linear amplifier provides at least one AC component of the at least one time-varying output voltage. The DC component and the at least one AC component of the at least one time-varying output voltage are combined into the at least one time-varying output voltage and provided to the power amplification components.
MEDIATEK INC.
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Tso-Min Chen-Yen Chia-Sheng Chien-Wei Sheng-Hong Che-Hao Shih-Mei
Chen Ho Peng Kuan Yan Meng Lin