Title :
Multistrip coupler performance for surface-skimming bulk waves on lithium tantalate
Author :
Paige, E.G.S. ; Whittle, P.
Author_Institution :
University of Oxford, Department of Engineering Science, Oxford, UK
Abstract :
Measurements are presented of the performance of the multi-strip coupler for X-direction propagating acoustic waves on 36° rotated Y-cut lithium tantalate. The predominant launched and coupled mode is the surface-skimming bulk wave. The coupler shows excellent discrimination against other modes. The maximum power transfer ratio is limited to approximately 4:1 and the strengths of transmitted symmetric and antisymmetric modes are found to be unequal.
Keywords :
acoustic microwave devices; lithium compounds; strip line components; waveguide couplers; 36 degree rotated Y-cut LiTaO3; X-direction propagating acoustic waves; antisymmetric modes; microstrip couplers; performance; surface skimming bulk waves; symmetrical modes;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19790271
