Pipelined delay-sum architecture based on bucket-brigade devices for on-chip ultrasound beamforming

Pipelined delay-sum architecture based on bucket-brigade devices for on-chip ultrasound beamforming

A pipelined delay-sum architecture based on bucket-brigade devices is proposed as an analog beamformer for integrated far-field steering scanning of a micromachined piezoelectric ultrasonic sensor phased array. The prototype beamformer, fabricated with an 8-/spl mu/m standard CMOS process, exhibits...

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Veröffentlicht in:IEEE journal of solid-state circuits 2003-10, Vol.38 (10), p.1754-1757
Hauptverfasser: Yaowu Mo, Tanaka, T., Arita, S., Tsuchitani, A., Inoue, K., Suzuki, Y.
Format: Artikel
Sprache:eng
Schlagworte:
Array signal processing
CMOS process
Delay
Dynamic range
Phased arrays
Piezoelectric devices
Prototypes
Sensor arrays
Total harmonic distortion
Ultrasonic imaging
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Zusammenfassung:A pipelined delay-sum architecture based on bucket-brigade devices is proposed as an analog beamformer for integrated far-field steering scanning of a micromachined piezoelectric ultrasonic sensor phased array. The prototype beamformer, fabricated with an 8-/spl mu/m standard CMOS process, exhibits a total harmonic distortion of -45 dB, dynamic range of more than 65 dB, and beamforming imperfection of less than -50 dB using a 100-kHz input signal with peak voltage of 400 mV.
ISSN:0018-9200
1558-173X
DOI:10.1109/JSSC.2003.817603