DocumentCode :
2657621
Title :
Tunable filter using ultra wide band elastic resonator
Author :
Kadota, Michio ; Ogami, Takashi ; Kimura, Tetsuya
Author_Institution :
Kadota Lab./Murata Manuf. Co. Ltd., Yasu, Japan
fYear :
2012
fDate :
21-24 May 2012
Firstpage :
1
Lastpage :
4
Abstract :
Currently, a mobile phone with multi-bands and a cognitive radio system require tunable filters with a wide tunable range. Ultra wide band resonator is important device to realize the tunable filter. This time, authors realized resonators with an ultra wide bandwidth of 26 % and a large impedance ratio of 92 dB between resonant and anti-resonant frequencies using a plate wave in a LiNbO3 plate. In addition, a band pass type tunable filter with a tunable range of 16 % was realized using the resonators.
Keywords :
band-pass filters; cognitive radio; lithium compounds; mobile handsets; surface acoustic wave filters; surface acoustic wave resonators; LiNbO3; antiresonant frequencies; band-pass type tunable filter; cognitive radio system; mobile phone; surface acoustic wave resonators; ultrawide band elastic resonator; Band pass filters; Bandwidth; Couplings; Electrodes; Lithium niobate; Resonant frequency; Resonator filters;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Frequency Control Symposium (FCS), 2012 IEEE International
Conference_Location :
Baltimore, MD
ISSN :
1075-6787
Print_ISBN :
978-1-4577-1821-2
Type :
conf
DOI :
10.1109/FCS.2012.6243609
Filename :
6243609
Link To Document :
https://search.ricest.ac.ir/dl/search/defaultta.aspx?DTC=49&DC=2657621
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