Congreso: XXIII Simposium Nacional de la Unión Científica Internacional de Radio (URSI 2008). 22-24 septiembre 2008. Madrid, España.

Autores: A. Antón Leal, A. M. Peláez Pérez, J. I. Alonso, J. González Martín.

Directional couplers are the key elements in manywideband millimeter wave systems. In this case, the couplermust provide a broadband flat frequency response to anothermillimeter wave circuit. Therefore, two types of directionalcouplers have been designed in order to achieve a constant levelof weak coupling over a wide frequency band from 20 to 40GHz. The fist one was obtained by employing two cascadedsections, one of which, has a wiggly (sawtooth) conductor-edgegeometry between adjacent conductors. The second one is anonuniform coupler. Both couplers were implemented inmicrostrip technology on alumina substrate. Results ofmeasurements are also presented in this paper.