TY - CHAP
T1 - Design of high-Q absorptive bandstop filters with static and reconfigurable attenuation
AU - Psychogiou, Dimitra
AU - Gomez-Garcia, Roberto
AU - Scarbrough, Derek
AU - Goldsmith, Charles L.
AU - Peroulis, Dimitrios
N1 - Publisher Copyright:
© 2015 IEEE.
PY - 2015/7/24
Y1 - 2015/7/24
N2 - This paper focuses on the design of highly selective and high quality factor (Q) absorptive bandstop filters (ABSFs) that are based on a mixed implementation scheme using acoustic wave (AW) resonators and lumped-element components. The proposed approach enables mobile form-factor notch filters with theoretically infinite attenuation even for stopbands showing 3-dB fractional bandwidths (FBWs) as narrow as 0.013-0.02% (Q=10,000-15,000). Proof-of-concept filter prototypes using commercially-available surface acoustic wave (SAW) resonators and surface-mount components are designed, built, and characterized for an example frequency of 418 MHz. Various stopbands with measured FBWs between 0.017 and 0.078% (i.e., 0.07 and 0.327 MHz in absolute terms) and attenuation levels as high as 83 dB are demonstrated. Absorptive notches with reconfigurable levels of isolation in the range of 10-83 dB are also shown through a fabricated ABSF with controllable attenuation.
AB - This paper focuses on the design of highly selective and high quality factor (Q) absorptive bandstop filters (ABSFs) that are based on a mixed implementation scheme using acoustic wave (AW) resonators and lumped-element components. The proposed approach enables mobile form-factor notch filters with theoretically infinite attenuation even for stopbands showing 3-dB fractional bandwidths (FBWs) as narrow as 0.013-0.02% (Q=10,000-15,000). Proof-of-concept filter prototypes using commercially-available surface acoustic wave (SAW) resonators and surface-mount components are designed, built, and characterized for an example frequency of 418 MHz. Various stopbands with measured FBWs between 0.017 and 0.078% (i.e., 0.07 and 0.327 MHz in absolute terms) and attenuation levels as high as 83 dB are demonstrated. Absorptive notches with reconfigurable levels of isolation in the range of 10-83 dB are also shown through a fabricated ABSF with controllable attenuation.
KW - Absorptive bandstop filter (ABSF)
KW - acoustic wave (AW) filter
KW - bandstop filter
KW - high quality-factor (Q) filter
KW - reconfigurable filter
UR - https://www.scopus.com/pages/publications/84946028084
U2 - 10.1109/MWSYM.2015.7166860
DO - 10.1109/MWSYM.2015.7166860
M3 - Chapter
AN - SCOPUS:84946028084
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 -