Heterojunction acoustic-charge-transport fixed-tap transversal filter

A heterojunction acoustic-charge-transport (HACT) transversal filter with a 3.35- mu s-long array of output electrodes is discussed. The device operated at an acoustic clock frequency of 143.6 MHz with a charge transfer efficiency in excess of 0.9999. The impulse response and swept frequency respons...

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Bibliographic Details
Published in:IEEE electron device letters 1990-03, Vol.11 (3), p.107-109
Main Authors: Merritt, S.W., Tanski, W.J., Cullen, D.E., Sacks, R.N., Branciforte, E.J., Carroll, R.D., Peterson, G.A.
Format: Article
Language:English
Subjects:
Acoustic devices
Acoustic measurements
Acoustic wave devices, piezoelectric and piezoresistive devices
Applied sciences
Charge transfer
Clocks
Dynamic range
Electrodes
Electronics
Exact sciences and technology
Frequency response
Heterojunctions
Noise measurement
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
Transversal filters
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Summary:A heterojunction acoustic-charge-transport (HACT) transversal filter with a 3.35- mu s-long array of output electrodes is discussed. The device operated at an acoustic clock frequency of 143.6 MHz with a charge transfer efficiency in excess of 0.9999. The impulse response and swept frequency response of the device were nearly ideal. On the basis of measurements of the 1-dB compression point, the third-order intercept, and the noise floor of the device, a thermal dynamic range of 80 dB and a spurious free dynamic range of 62 dB were demonstrated over a 300-kHz bandwidth. The device exhibited 12 dB of gain when embedded in a 50- Omega system.< >
ISSN:0741-3106
1558-0563
DOI:10.1109/55.46949