Title :
IIDT-type low-loss SAW filters used in wideband cellular radio systems
Author :
Weigel, R. ; Bader, B. ; Fischerauer, G. ; Russer, P.
Author_Institution :
Lehrstul fuer Hochfrequenztech., Munchen Univ., Germany
Abstract :
The design and performance of wideband low-loss surface-acoustic-wave (SAW) filters employing interdigitated interdigital transducers (IIDTs) suitable for cellular radio systems are described. The filters were fabricated on 36° YX-LiTaO3 substrates. A detailed design method which optimizes the IIDT configuration has been worked out. In the 500-MHz band, fractional bandwidths of up to 5.2% with passband ripples smaller than 1 dB were attained. Insertion loss and sidelobe suppression were at 1.8 dB and 23 dB, respectively
Keywords :
cellular radio; frequency response; interdigital transducers; lithium compounds; surface acoustic wave filters; surface acoustic wave transducers; LiTaO3; SAW filters; design; fractional bandwidths; insertion loss; interdigitated interdigital transducers; passband ripples; performance; sidelobe suppression; wideband cellular radio systems; Band pass filters; Bandwidth; Design methodology; Design optimization; Land mobile radio cellular systems; Passband; SAW filters; Surface acoustic waves; Transducers; Wideband;
Conference_Titel :
Communications, Computers and Signal Processing, 1993., IEEE Pacific Rim Conference on
Conference_Location :
Victoria, BC
Print_ISBN :
0-7803-0971-5
DOI :
10.1109/PACRIM.1993.407259
