Design of a Planar Antenna on a Photonic-Crystal Silicon Cavity for a Submillimetre Wave Receiver

Traditional terahertz mixers face constraints pro-viding compactness and integrability. The integration of the electronic non-linear devices with dielectric photonic crystal platforms arises as a new promising option to perform efficient heterodyne detector arrays in a fully planar approach. This work presents the trade-off carried out for the design of the planar antenna to be integrated in this mixer. This antenna must serve a double purpose: efficiently couple the LO signal and be matched at RF frequencies. A double bow-tie has been found to be the best alternative and has been integrated in a submillimetre wave receiver.