Synthesis and performance of precision wideband slanted array compressors

An improved device analysis model that accurately predicts amplitude and phase responses in a SAW slanted array/compressor (SAC) is described. The major ingredients in the analysis model are reviewed. A synthesis model that iteratively applies a simplified analysis model to adjust the SAC transducer´s frequency dependent acoustic aperture for the intended amplitude response. The full-fledged analysis is then performed to fine-tune the design. The synthesis algorithms and the overall design methodology are discussed. Approaches for spectral weighting and compensation of phase error are described. Experimental and testing techniques, involving extensive use of a high-performance phase-sensitive SAW laser probe and an on-wafer RF probe, are discussed. Difficulties encountered and potential limitations to the present approach, as well as possible further improvements, are also discussed. The improved design capability is illustrated by several L-band devices