TY - GEN
T1 - Multi-resonant acoustic-wave-lumped-element resonators (AWLRs) for multi-band bandpass filters with enhanced fractional bandwidth
AU - Psychogiou, Dimitra
AU - Gomez-Garcia, Roberto
AU - Peroulis, Dimitrios
N1 - Publisher Copyright:
© 2017 IEEE.
PY - 2017/6/28
Y1 - 2017/6/28
N2 - This paper reports on the design of multi-band acoustic-wave-resonator-(AWR)-based bandpass filters (BPFs) with enhanced-fractional-bandwidth (FBW) quasi-elliptic-type passbands. They are based on multi-resonant acoustic-wave-lumped-element resonators (AWLRs) that are shaped by the inparallel cascade of multiple (equal to the desired number of transmission bands) one-port-type AWRs and one lumped-element (LE) resonator. By cascading them in-series through impedance inverters, passbands with increased selectivity and enhanced FBW (i.e., larger than the electromechanical coupling coefficient kt2) can be obtained. In addition, they preserve the high-quality-factor (Q) characteristics of the AWRs. For experimental-demonstration purposes, two UHF-band dual-band BPF prototypes with alternative levels of FBW were designed, manufactured, and measured. They exhibited two transmission bands centered at 418 MHz and 434 MHz, respectively, with FBWs of 1-3kt2 and minimum in-band insertion loss (IL) in the range of 0.5-1.25 dB (i.e., effective Q >10,000).
AB - This paper reports on the design of multi-band acoustic-wave-resonator-(AWR)-based bandpass filters (BPFs) with enhanced-fractional-bandwidth (FBW) quasi-elliptic-type passbands. They are based on multi-resonant acoustic-wave-lumped-element resonators (AWLRs) that are shaped by the inparallel cascade of multiple (equal to the desired number of transmission bands) one-port-type AWRs and one lumped-element (LE) resonator. By cascading them in-series through impedance inverters, passbands with increased selectivity and enhanced FBW (i.e., larger than the electromechanical coupling coefficient kt2) can be obtained. In addition, they preserve the high-quality-factor (Q) characteristics of the AWRs. For experimental-demonstration purposes, two UHF-band dual-band BPF prototypes with alternative levels of FBW were designed, manufactured, and measured. They exhibited two transmission bands centered at 418 MHz and 434 MHz, respectively, with FBWs of 1-3kt2 and minimum in-band insertion loss (IL) in the range of 0.5-1.25 dB (i.e., effective Q >10,000).
KW - Acoustic-wave (AW) filter
KW - bandpass filter (BPF)
KW - k enhancement
KW - multi-band filter
KW - RF/microwave filter
KW - surface-acoustic-wave (SAW) resonator
UR - https://www.scopus.com/pages/publications/85045853575
U2 - 10.1109/COMCAS.2017.8244708
DO - 10.1109/COMCAS.2017.8244708
M3 - Conference proceeding
AN - SCOPUS:85045853575
T3 - 2017 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems, COMCAS 2017
SP - 1
EP - 4
BT - 2017 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems, COMCAS 2017
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2017 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems, COMCAS 2017
Y2 - 13 November 2017 through 15 November 2017
ER -