TY - GEN
T1 - Ultra wide band resonator composed of grooved Cu-electrode on LiNbO 3 and its application to tunable filter
AU - Kadota, Michio
AU - Kimura, Tetsuya
AU - Ida, Yasuyuki
PY - 2009
Y1 - 2009
N2 - A leaky surface acoustic wave (LSAW) on 0-15° YX-LiNbO3 has a large electro-mecahnical coupling factor, but it has a leaky component. The LSAW changes to Love wave without its leaky component, by using a high density metal electrode with a low velocity such as Au and Cu on that substrate. It was reported that a resonator composed of a Cu-electrode/15° YX-LiNbO 3 had wide bandwidth of 12%. This time, in order to obtain a resonator with a wider bandwidth, authors attempted to fabricate one-port resonators composed of a grooved Cu-electrode/4° YX-LiNbO3. As the result, this resonator had a wider bandwidth of 17% of 1.3 times and higher resonant and anti-resonant frequencies of 1.3 times than the resonator composed of a conventional type of same thick Cu-electrode on 4° YX-LiNbO3 for reference. Authors proposed to apply this resonator to a tunable filter. As the result, the tunable filter having tunable range of 7% in center frequency was realized.
AB - A leaky surface acoustic wave (LSAW) on 0-15° YX-LiNbO3 has a large electro-mecahnical coupling factor, but it has a leaky component. The LSAW changes to Love wave without its leaky component, by using a high density metal electrode with a low velocity such as Au and Cu on that substrate. It was reported that a resonator composed of a Cu-electrode/15° YX-LiNbO 3 had wide bandwidth of 12%. This time, in order to obtain a resonator with a wider bandwidth, authors attempted to fabricate one-port resonators composed of a grooved Cu-electrode/4° YX-LiNbO3. As the result, this resonator had a wider bandwidth of 17% of 1.3 times and higher resonant and anti-resonant frequencies of 1.3 times than the resonator composed of a conventional type of same thick Cu-electrode on 4° YX-LiNbO3 for reference. Authors proposed to apply this resonator to a tunable filter. As the result, the tunable filter having tunable range of 7% in center frequency was realized.
KW - Grooved Cu-electrode
KW - LiNbO
KW - Resonator
KW - Tunable filter
KW - Ultra wide band
UR - http://www.scopus.com/inward/record.url?scp=77952839181&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77952839181&partnerID=8YFLogxK
U2 - 10.1109/ULTSYM.2009.5442043
DO - 10.1109/ULTSYM.2009.5442043
M3 - Conference contribution
AN - SCOPUS:77952839181
SN - 9781424443895
T3 - Proceedings - IEEE Ultrasonics Symposium
SP - 2668
EP - 2671
BT - 2009 IEEE International Ultrasonics Symposium and Short Courses, IUS 2009
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2009 IEEE International Ultrasonics Symposium, IUS 2009
Y2 - 20 September 2009 through 23 September 2009
ER -