Non-linear modeling and performance of oscillators using thin-film bulk-acoustic wave devices

Author

Burns, S.G. ; Thompson, P.H. ; Kline, G.R.

Author_Institution

Microelectron. Res. Center, Iowa State Univ., Ames, IA, USA

fYear

1988

Firstpage

272

Lastpage

275

Abstract

Thin-film bulk-acoustic-wave resonators (TFR) and TFR-based filters have been used in single-line-spectra UHF and L-band oscillators in both hybrid and monolithic integrated versions. Two methods are proposed for modeling the behavior of the amplifier in a SPICE simulation. The first uses a nonlinear controlled generator derived from measured gain compression data. The second involves a circuit model of the amplifier used in a closed-loop simulation. The method of deriving the amplifier models is presented along with experimental results for the actual oscillator circuits. The oscillators, using commercial hybrid Darlington amplifiers as the gain element, are evaluated with fundamental mode frequencies in the area of 1 GHz

Keywords

acoustic microwave devices; acoustic resonators; circuit analysis computing; crystal filters; digital simulation; equivalent circuits; hybrid integrated circuits; microwave oscillators; monolithic integrated circuits; nonlinear network analysis; solid-state microwave circuits; 1 GHz; L-band oscillators; SPICE simulation; amplifier; circuit model; closed-loop simulation; filters; gain compression data; hybrid Darlington amplifiers; hybrid IC; monolithic IC; nonlinear controlled generator; oscillators; resonators; single-line-spectra UHF; thin-film bulk-acoustic wave devices; Circuit simulation; Filters; Frequency measurement; Gain measurement; Microelectronics; Oscillators; Power generation; SPICE; Thin film devices; Transfer functions;

fLanguage

English

Publisher

ieee

Conference_Titel

Frequency Control Symposium, 1988., Proceedings of the 42nd Annual

Conference_Location

Baltimore, MD

Type

conf

DOI

10.1109/FREQ.1988.27613

Filename

27613