Figure 1 A series diode protects systems from reverse polarity but wastes power in diode losses. Figure 2 You can use a bridge rectifier so that your system works no matter what the input polarity is.

Abstract: This paper presents the design of a highly efficient single-stage voltage doubler rectifier circuit in the 180 nm CMOS process for wireless power transfer applications. An impedance modeling ...

Abstract: We reports on the design, fabrication and measurements of a solid-state frequency tripler with an output power > 100mW above 300GHz at room temperature. This tripler benefits from balanced ...