This thesis studies the development of LEKID arrays for the use in a mm-wave camera for the
IRAM 30m telescope. This includes the design and fabrication of the superconducting
microresonators the modeling and optimization of the mm-wave coupling to the detector and the
characterization of the arrays at low temperatures. The results obtained brought IRAM to test a
prototype instrument at the telescope where first astronomical results have been achieved
which are also presented in this work.
