Embedding method

A body-mountable device comprising:

• a transparent polymer, wherein the transparent polymer defines a posterior side and an anterior side of the body-mountable device;
• and
• a structure embedded in the transparent polymer, wherein the structure has an outer circumference defined by an outer diameter and an inner circumference defined by an inner diameter and includes a sensor configured to detect an analyte and an antenna, wherein the antenna includes a plurality of conductive loops spaced apart from each other between the outer circumference and the inner circumference,
• wherein each conductive loop in the plurality of conductive loops comprises a respective metal layer disposed between a first respective polymer layer and a second respective polymer layer, and wherein the respective metal layer, the first respective polymer layer, and the second respective polymer layer are each embedded in the transparent polymer, and
• wherein the transparent polymer extends from the anterior side of the body-mountable device to the posterior side of the body-mountable device between adjacent conductive loops in the plurality of conductive loops.