Very large bandwidth IF SAW filters using leaky waves on LiNbO3 and LiTaO3

摘要

) for a Leaky wave. The experimental results show the IF SAW filter on 36°Y-X LiTaO3 gives a good steepness of 1.5% with a reasonable relative bandwidth (9%). Concerning the filter on 41°Y-X LiNbO3, it presents a large relative bandwidth (55%), low losses (−13dB) and a good Return Loss (−9 dB). These results are very promising compared to those of conventional wide band IF filters using Rayleigh waves.