An array of four antennas is considered for circular polarization with high self-isolation.

Polymer objects are considered here, manufactured through an additive process and the paper focuses on the rapid prototyping of the harvester using a plastronic approach. There is an interest to add the RF harvesting function on an already-designed object. The RF energy harvester is considered most of the time as a standalone board. Harvesting of ambient radio-frequency energy is largely covered in the literature. 3D Plastronics is the terminology now accepted by the IPC organization, but it is also known as Molded Interconnect Devices or Mechatronic Integrated Devices (MID). , B-, C-, D-, E-, F-, G-, H-, I-, J-, K-, L-, M-, N-, O-, P-, Q-, R-, S-, T-, U-, V-, W-, X-, Y-, Z-, AA-, BB-, CC-, DD-, EE-, FF-, GG-, HH-, II-, JJ-, KK-, LL-, MM-, NN-, OO-, PP-, QQ-, RR-, SS-, TT-, UU- 3D Plastronics allows integrating electronic functions at the surface of the polymer housing of an object by selective metallization of conductive traces and placement of Surface Mount Devices (SMD). Indeed, the polymer material involved in the additive manufacturing as well as the added conductor have a major impact on the RFEH performances and it is one of the main issues of the paper to quantify the impact and discuss the pertinence of the manufacturing process proposal in this context.

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