Unit-cell design for antenna arrays efficiently matched to uni-travelling-carrier photodiodes

A. Pascual (1, 2) , L.E. Garcia-Munoz (3) , R. Sauleau (1, 2) , D. Gonzalez-Ovejero (1, 4)

1 IETR - Institut d'Électronique et des Technologies du numéRique
2 UR - Université de Rennes
3 UC3M - Universidad Carlos III de Madrid [Madrid]
4 CNRS - Centre National de la Recherche Scientifique

We present an antenna array with a backing reflector that allows one to obtain efficient matching to integrated sources or loads with low input resistance. In the infinite array limit, it is possible to describe the proposed unit-cell as an equivalent network with closed-form expressions for its different constituents. This analytic approach enables the preliminary design of arrays with improved matching efficiency for optimum power transmission/reception. The proposed solution has enabled an improved matching to a uni-travelling-carrier photodiode with a maximum improvement of 3 dB in the radiated power with respect to a 72-Ω antenna, and featuring a 50% bandwidth.

Domaines: Sciences de l'ingénieur [physics]; Electromagnétisme; Optique / photonique

A. Pascual, L.E. Garcia-Munoz, R. Sauleau, D. Gonzalez-Ovejero. Unit-cell design for antenna arrays efficiently matched to uni-travelling-carrier photodiodes. 2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), Sep 2019, Paris, France. pp.1-2, ⟨10.1109/IRMMW-THz.2019.8874017⟩. ⟨hal-02333678⟩