Title :
SAW filter with insertion loss of 2 dB and fractional bandwidth of 30 percent
Author_Institution :
Nat. Lab. on Local Fibre-Opt. Commun. Networks, Beijing Univ., China
Abstract :
A very low insertion loss and very wideband SAW filter with ring topology on high electromechanical coupling coefficient substrates is demonstrated in the paper. The insertion loss is 1.9 dB and 3-dB fractional bandwidth is 30%. The filter also shows linear phase characteristic with small size and low passband ripples. The insertion loss is the lowest ever reported with such a wide bandwidth.
Keywords :
linear phase filters; surface acoustic wave filters; 2 dB; SAW filter; electromechanical coupling coefficient; fractional bandwidth; insertion loss; linear phase characteristics; ring topology; Bandwidth; Insertion loss; Optical fiber communication; Optical fiber filters; Optical losses; Resonator filters; SAW filters; Surface acoustic waves; Transducers; Wideband;
Conference_Titel :
Ultrasonics Symposium, 1999. Proceedings. 1999 IEEE
Conference_Location :
Caesars Tahoe, NV
Print_ISBN :
0-7803-5722-1
DOI :
10.1109/ULTSYM.1999.849348
