Abstract: An electronic patch includes a first circuit layer comprising a substantially flat first substrate and a first conductive circuit, a second circuit layer comprising a substantially flat second substrate and a second conductive circuit, and an undulated ribbon that connects the first circuit layer and the second circuit layer. The undulated ribbon includes a third conductive circuit that connects the first conductive circuit and the second conductive circuit. An elastic layer encloses the first circuit layer, the second circuit layer, and the undulated ribbons.