DocumentCode :
564361
Title :
Balanced wideband tapered three-transducer low-loss SAW filters with impedance conversion
Author :
Doberstein, S.
Author_Institution :
ONIIP, Omsk, Russia
fYear :
2006
fDate :
27-30 March 2006
Firstpage :
54
Lastpage :
57
Abstract :
This paper presents the balanced three-transducer SAW filters using tapered IDTs on YZ LiNbO3 with impedance conversion as 1:2.6 from the input to output in a wide fractional bandwidth of 6-28%. The filters have shown an insertion loss of 4-6 dB, passband ripple of 0.5-2 dB, shape factor of 1.3-2.5, stopband attenuation of 20-35 dB in a center frequency of 35 MHz. Matching the filters with the loads was provided by LC-elements. Withdrawal weighting is used in order to improve the filter selectivity.
Keywords :
LC circuits; interdigital transducers; lithium compounds; surface acoustic wave filters; LC element; LiNbO3; balanced wideband tapered three transducer filter; filter matching; frequency 35 MHz; impedance conversion; interdigital transducer; low loss SAW filter; tapered IDT; Bandwidth; Frequency response; Impedance; Insertion loss; Passband; SAW filters; Shape;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Frequency and Time Forum (EFTF), 2006 20th European
Conference_Location :
Braunschweig
Print_ISBN :
978-1-4673-2642-1
Type :
conf
Filename :
6230945
Link To Document :
https://search.ricest.ac.ir/dl/search/defaultta.aspx?DTC=49&DC=564361
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