TY - GEN
T1 - High-Q bandpass filters using hybrid acoustic-wave-lumped-element resonators (AWLRs) for UHF applications
AU - Psychogiou, Dimitra
AU - Gomez-Garcia, Roberto
AU - Peroulis, Dimitrios
N1 - Publisher Copyright:
© 2015 IEEE.
PY - 2015/7/24
Y1 - 2015/7/24
N2 - This paper focuses on a new family of narrow-band bandpass filters, along with its coupling-matrix-based design approach which feature quasi-elliptic frequency response, effective quality factors (Qseff) of the order of 1,000 and small form factors. Hybrid acoustic-wave-lumped-element resonator (AWLR) architectures are proposed as fundamental elements of these filters leading to low-loss passbands with fractional bandwidth (FBW) that is much broader (3.8-7.5 times) than in all acoustic wave (AW) filters and Qseff that are 10-20 times larger than in traditional lumped-element filters. Experimental prototypes based on commercially-available surface acoustic wave (SAW) resonators were built and tested at 418 MHz. Measured Qseff between 750-1550 and bandwidths ranging from 0.65 to 0.94 MHz (i.e., 2-3 times the electromechanical coupling coefficient of the AW resonator) are presented.
AB - This paper focuses on a new family of narrow-band bandpass filters, along with its coupling-matrix-based design approach which feature quasi-elliptic frequency response, effective quality factors (Qseff) of the order of 1,000 and small form factors. Hybrid acoustic-wave-lumped-element resonator (AWLR) architectures are proposed as fundamental elements of these filters leading to low-loss passbands with fractional bandwidth (FBW) that is much broader (3.8-7.5 times) than in all acoustic wave (AW) filters and Qseff that are 10-20 times larger than in traditional lumped-element filters. Experimental prototypes based on commercially-available surface acoustic wave (SAW) resonators were built and tested at 418 MHz. Measured Qseff between 750-1550 and bandwidths ranging from 0.65 to 0.94 MHz (i.e., 2-3 times the electromechanical coupling coefficient of the AW resonator) are presented.
KW - Acoustic wave (AW) filter
KW - bandpass filter
KW - kt enhancement
KW - RF filter
KW - surface acoustic wave (SAW) filter
UR - https://www.scopus.com/pages/publications/84946020601
U2 - 10.1109/MWSYM.2015.7166855
DO - 10.1109/MWSYM.2015.7166855
M3 - Conference proceeding
AN - SCOPUS:84946020601
T3 - 2015 IEEE MTT-S International Microwave Symposium, IMS 2015
BT - 2015 IEEE MTT-S International Microwave Symposium, IMS 2015
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - IEEE MTT-S International Microwave Symposium, IMS 2015
Y2 - 17 May 2015 through 22 May 2015
ER -