Organic Rectifying Diode and Circuit for Wireless Power Harvesting at 13.56 MHz

Organic rectifying diodes and their circuits have unique characteristics and their optimization can differ strongly from conventional inorganic equivalents. In this paper, we investigate the effect of organic diodes on the performance of a rectenna circuit consisting of a loop antenna and a rectifying circuit with an operating frequency of 13.56 MHz. The geometric capacitance of the diodes has a major impact on the resonant frequency and the coupling ac voltage of the loop antenna, and consequently the output dc voltage of the circuit. Therefore, appropriate design considerations that take the special properties of organic devices into account should apply to organic diodes and circuits.