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Tone injection‐based cancellation technique for nonlinear distortion reduction of modulated signals in BAW resonators
Author(s) -
GonzálezRodríguez Marta,
Collado Carlos,
GonzálezArbesú José M.,
Mateu Jordi,
Montoro Gabriel,
Gilabert Pere Lluis
Publication year - 2021
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.32670
Subject(s) - intermodulation , multiplexer , resonator , distortion (music) , nonlinear distortion , signal (programming language) , acoustics , materials science , reduction (mathematics) , physics , electronic engineering , optoelectronics , telecommunications , computer science , multiplexing , engineering , mathematics , cmos , programming language , geometry , amplifier
Abstract A technique for the reduction of third‐order intermodulation distortion (IMD3) occurring in bulk acoustic wave (BAW) filters and multiplexers is presented. The method consists of using the intrinsic second‐order intermodulation distortion generated by BAW filters and multiplexers themselves by injecting an externally controlled amplitude and phase modulated signal at low frequency to compensate for the IMD3. The proposed technique has been experimentally verified by performing IMD3 measurements in a single BAW resonator subject to several modulated signals under a nonlinear scenario.