TY - CHAP
T1 - Analog signal-interference narrow-band bandpass filters with hybrid transmission-line/SAW-resonator transversal filtering sections
AU - Psychogiou, Dimitra
AU - Peroulis, Dimitrios
AU - Loeches-Sanchez, Raul
AU - Gomez-Garcia, Roberto
N1 - Publisher Copyright:
© 2015 IEEE.
PY - 2015/7/27
Y1 - 2015/7/27
N2 - A technique to design analog signal-interference narrow-band bandpass filters by merging transmission lines and surface-acoustic-wave (SAW) resonators is reported in this work. By inserting one-/two-port SAW resonators into the transversal filtering sections (TFSs) of the signal-interference filter, narrowband filtering actions with remarkable electrical properties can be synthesized. The latter particularly refers to the untypically-high effective unloaded quality factor (Qu) associated with the generated bandpass filtering response given its fully-planar realization. This leads to perceptible benefits in terms of in-band transmission loss and occupied physical area when compared to a classic pure signal-interference filter design. Moreover, for a given type of SAW resonator, adjustable bandwidth and transmission zeros (TZs) can be produced to attain a large variety of high-selectivity filtering functions. For practical validation, a three-stage microstrip narrow-band bandpass filter with measured S-parameters of a 433.9-MHz one-port SAW resonator is shown. The spurious-mode effect of the measured SAW resonator, as a limiting factor in the overall filter performance, is also discussed.
AB - A technique to design analog signal-interference narrow-band bandpass filters by merging transmission lines and surface-acoustic-wave (SAW) resonators is reported in this work. By inserting one-/two-port SAW resonators into the transversal filtering sections (TFSs) of the signal-interference filter, narrowband filtering actions with remarkable electrical properties can be synthesized. The latter particularly refers to the untypically-high effective unloaded quality factor (Qu) associated with the generated bandpass filtering response given its fully-planar realization. This leads to perceptible benefits in terms of in-band transmission loss and occupied physical area when compared to a classic pure signal-interference filter design. Moreover, for a given type of SAW resonator, adjustable bandwidth and transmission zeros (TZs) can be produced to attain a large variety of high-selectivity filtering functions. For practical validation, a three-stage microstrip narrow-band bandpass filter with measured S-parameters of a 433.9-MHz one-port SAW resonator is shown. The spurious-mode effect of the measured SAW resonator, as a limiting factor in the overall filter performance, is also discussed.
KW - Analog filter
KW - bandpass filter
KW - high-Q resonator
KW - microstrip filter
KW - surface-acoustic-wave (SAW) resonator
KW - transmission zero (TZ)
KW - transversal filtering section (TFS)
UR - https://www.scopus.com/pages/publications/84946207948
U2 - 10.1109/ISCAS.2015.7168625
DO - 10.1109/ISCAS.2015.7168625
M3 - Chapter
AN - SCOPUS:84946207948
T3 - Proceedings - IEEE International Symposium on Circuits and Systems
SP - 281
EP - 284
BT - 2015 IEEE International Symposium on Circuits and Systems, ISCAS 2015
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - IEEE International Symposium on Circuits and Systems, ISCAS 2015
Y2 - 24 May 2015 through 27 May 2015
ER -