Title :
SAW filters and competitive technologies: a comparative review
Author_Institution :
RF Monolithics Inc., Dallas, TX, USA
Abstract :
The current performance capabilities of surface acoustic wave (SAW) bandpass filters are reviewed and summarized for the frequency range of 30 MHz to 3 GHz. SAW coupled-resonators with up to 0.8% bandwidth, low loss transversal, and surface-skimming bulk-wave filters are included. SAW filter capabilities are compared with those of competing bandpass filter technologies in the same frequency range. These include bulk crystal, LC, cavity, helical, tubular, dielectric resonator, combline, interdigital, and stripline technologies. The following two needs are addressed: (1) SAW filter designers and marketers must be informed about the current capabilities of competing technologies, and (2) RF system designers need reference material to aid the efficient selection of optimum filters. Such reference literature is scarce and is often incomplete or obsolete
Keywords :
acoustic resonators; band-pass filters; design engineering; reviews; surface acoustic wave filters; 0.8% bandwidth; 30 MHz to 3 GHz; LC technology; RF system designers; SAW coupled-resonators; SAW filters; bandpass filters; bulk crystal technology; cavity technology; combline technology; competitive technologies; dielectric resonator technology; helical technology; interdigital technology; low loss transversal; performance capabilities; reference material; stripline technologies; surface acoustic wave; surface-skimming bulk-wave filters; tubular technology; Acoustic waves; Band pass filters; Bandwidth; Dielectrics; Frequency; Resonator filters; SAW filters; Stripline; Surface acoustic waves; Transversal filters;
Conference_Titel :
Ultrasonics Symposium, 1991. Proceedings., IEEE 1991
Conference_Location :
Orlando, FL
DOI :
10.1109/ULTSYM.1991.234146
