Title :
Directional coupler using acoustic surface waves
Author_Institution :
Private Address, Grays, UK
Abstract :
The properties of interdigital transducers have been used to construct a directional coupler. The coupler consists basically of an array of eight transducers etched from an aluminium film deposited on a lithium-niobate substrate. Experimentally, a directivity of 17 dB was obtained at 75 MHz.
Keywords :
directional couplers; ultrasonic transducers; 75 MHz; acoustic surface waves; aluminium film; directional counters; interdigital transducers; lithium-niobate substrate; piezoelectric substrate; ultrasonic transducers;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19710279
