OUTPHASING TRANSMITTER An Outphasing Transmitter Using Class - E PAs and Asym - metric Combining : Part 2
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چکیده
Second Harmonic Class-E PA Design The selected active device for the transmission-line class-E2 PA is the SD57030 transistor provided by STMicroelectronics. It has a maximum drain voltage of 65 V. In an ideal class-E PA in the optimum operating mode with 50% duty cycle and a slope of zero [5], the peak drain voltage is vDmax =3.56 VDD. Since the peak varies with load impedance, a design for vDmax =4 VDD or slightly more is prudent, which suggests VDD = 15 V. For a 10-W output power the fundamental load resistance is [5]:
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تاریخ انتشار 2011