Title :
Electrical Matching of Unidirectional Surface Wave Devices
Author_Institution :
Texas Instrum. Inc., Dallas, TX, USA
Abstract :
Recent advances in surface wave device (SWD) technology have made it possible to obtain bandpass filters with insertion losses as low as 0.65 dB by implementing 3-phase unidirectional transducers. This paper discusses the techniques used for electrically matching unidirectional SWD´s and shows recent experimental results obtained by using these techniques. Also included are discussions on electrical measurements of 3-phase transducer terminals, different methods of phase splitting and transducer interface, component value calculations for phase splitting and matching, and a review of sources of filter insertion loss.
Keywords :
band-pass filters; surface acoustic wave devices; transducers; SWD technology; bandpass filter; electrical matching; electrical measurement; filter insertion loss; phase matching; phase splitting; transducer interface; unidirectional surface wave device; unidirectional transducer; Acoustic transducers; Acoustic waves; Band pass filters; Circuits; Electric variables measurement; Impedance measurement; Insertion loss; Phase shifters; Scattering parameters; Surface waves;
Conference_Titel :
Microwave Symposium, 1975 IEEE-MTT-S International
Conference_Location :
Palo Alton, CA
DOI :
10.1109/MWSYM.1975.1123395
