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Broadband and Compact 3-Bit Digitally-Controlled Reconfigurable Rectification Circuit

A broadband rectification circuit is usually designed with complex matching circuits to achieve decade and octave impedance which result is the bulkiness of the layout and increases the losses. To mitigate these problems, an ultra-wideband high-efficiency rectification circuit without any inductors and transmission lines at the input section [1] is utilized and employed with 3-bit digitally controlled signals to vary the length of a short stub at the grounding so that reconfigurable operation of the proposed rectifier is obtained in the frequency range of 60 MHz to 3.8 GHz. The proposed compact rectification circuit offers reconfigurable operation over a wide bandwidth and is best suitable for the applications in wirelessly powered multiband and software-defined radios or other portable devices.