A simple technique for determining transmission losses in SAW delay lines

Experimental data are analysed in order to determine the synchronous frequency at which the minimum insertion loss occurs in a surface acoustic wave (SAW) delay line. The insertion loss of a locally fabricated delay line is measured to be 29.23 dB at a synchronous frequency in the order of 6 MHz. The transmission losses are deduced as a result of the comparison between the experimental data of the total insertion loss of the delay line and the theoretical results of the transducer losses. This technique can be considered as a basis for the development of laboratory experiments to acquaint the undergraduate communication engineering major with SAW technology