GaAs SAW/MESFET Programmable Asynchronous Correlator with Complex Tap Weighting

Merritt, S.W.; Montress, G.K.; Grudkowski, T.W.

doi:10.1109/ultsym.1983.198038

Cited by 9 publications

(3 citation statements)

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“…As outlined in Fig. 10, PTFs have also been implemented on epitaxial CaAs using a (001 )-oriented substrate for maximu m piezoelectric cou pli ng to the su rface waves, and SAW propagation along a (110) direction [52], [194]. for CaAs is only 38 percent less.…”

Section: E Programmable Coding With Sa W Transversal Filtersmentioning

confidence: 99%

“…This provides milliwatt power dissipation per tap, with high input dynamic range, low spurious signal levels, and large tap on/off ratios. Also, this CaAs device can be configured for operation as a variable phase shifter, a tunable resonator, or for correlation of Barker or biphase codes [52], [194].…”

Section: E Programmable Coding With Sa W Transversal Filtersmentioning

confidence: 99%

“…Such a structure allowed a frequency tuning of 89 ppm in a SAW oscillator for a bias voltage change of 18 V [52]. I n another GaAs fi Iter design operati ng at 300 M Hz with bandwidth B = 30 MHz, a quadrature arrangement of two PTFs on the same substrate allowed for control of both the amplitude-and phase-weighting for each tap [276].…”

Section: A Bias For Lots On Caasmentioning

confidence: 99%

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Applications of surface acoustic and shallow bulk acoustic wave devices

Campbell

1989

Proc. IEEE

112

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Applications of surface acoustic wave (SA W) and shallow bulk acoustic wave (SBA W) devices are reviewed. SA W-device coverage includes delay lines and filters operating at selected frequencies in the range from about 10 MHz to 11 GHz, modeling with singlecrystal piezoelectrics and layered structures, resonators and lowloss filters, comb filters and multiplexers, antenna duplexers, harmonic devices, chirp filters for pulse compression, coding with fixed and programmable transversal filters, Barker and quadraphase coding, adaptive filters, acoustic and acoustoelectric convolvers and correia tors for radar, spread spectrum, and packet radio, acoustooptic processors for Bragg modulation and spectrum analysis, real-time Fourier-transform, and cepstrum processors for radar and sonar, compressive receivers, Nyquist filters for microwave digital radio, clock-recovery filters for optical fiber communications, fixed-, tunable-, and multimode-oscillators, and frequency synthesizers, acoustic charge transport (ACT), and other SA W devices for signal processing on gallium arsenide, SA W sensors, and scanning acoustic microscopy. SBA W-devices applications include gigahertz delay lines, surface transverse wave resonators employing energy-trapping gratings, as well as oscillators with enhanced performance and capability.

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Section: E Programmable Coding With Sa W Transversal Filtersmentioning

confidence: 99%

Section: E Programmable Coding With Sa W Transversal Filtersmentioning

confidence: 99%