Communications: directive radio wave systems and devices (e.g. – With particular circuit – Spectrum analysis
Patent
1983-01-24
1987-03-10
Tubbesing, T. H.
Communications: directive radio wave systems and devices (e.g.,
With particular circuit
Spectrum analysis
342417, 333150, 333154, 333196, 324 77B, 324 77H, 364826, G01S 372, G01R 23175, H03H 944
Patent
active
046493921
ABSTRACT:
The invention of this disclosure comprises a system that simultaneously determines the frequency and direction of arrival of incoming signals. The apparatus of this invention comprises a layered half space dispersive delay line which is utilized as a beam forming element in a device that performs a two-dimensional Fourier transform on a function which is both time and space dependent.
A pulse appears at the end of the delay line at a time which corresponds to the frequency of the incoming signal and the position of the pulse along the edge of the delay line is related to the direction of arrival of the incoming signals.
REFERENCES:
patent: 3264583 (1963-06-01), Fitch
patent: 3435381 (1966-04-01), Tournois
patent: 3522557 (1963-07-01), Duncan et al.
patent: 3719906 (1970-11-01), Tournois
patent: 3727718 (1973-04-01), Whitehouse
patent: 3795000 (1974-02-01), Bell, Jr. et al.
patent: 3925653 (1975-12-01), Otto
patent: 3946388 (1976-03-01), Schifrine
patent: 3955137 (1976-05-01), Harrington et al.
patent: 4114116 (1978-09-01), Reeder
patent: 4131852 (1978-12-01), Holland-Moritz
patent: 4200840 (1980-04-01), Tsui
patent: 4204262 (1980-05-01), Fitelson et al.
patent: 4236159 (1980-11-01), Alpers
patent: 4245333 (1981-01-01), Jelks
patent: 4270209 (1981-05-01), Albanese
patent: 4297704 (1981-10-01), Marom et al.
patent: 4305159 (1978-01-01), Stromswold et al.
patent: 4320400 (1982-03-01), Chasek
patent: 4321565 (1982-03-01), Ward
patent: 4443801 (1984-04-01), Klose et al.
patent: 4499393 (1985-02-01), Stokes et al.
M. A. Jack et al., "Two-Dimensional Transform Processor for Sonar Beamforming Using CCD and SAW Devices", Feb. 1977, Electronic Letters, vol. 13, #3, pp. 65-66.
J. H. Elliott, "SAWFAST: A SAW Diffraction Channelizer", Microwave Journal.
Klose et al., A SAW Interferometer D-F and Frequency Identification Method, Jun. 1981, pp. 392-394, Conf. 1981 IEEE Int. Microwave Symp., LA, CA, USA.
Coppock et al., Bragg Cell RF Signal Processing, Microwave Journal, vol. 21, No. 9, Sep. 1978, pp. 62-65.
Moule et al., AlGHz Bandwidth SAW Compressive Receiver; 1980 Ultrasonics Symposium, Proc., Boston, Ma., USA, Nov. 1980, pp. 216-219.
Viktorov, Igor Aleksandrovich, Rayleigh and Lamb Waves, (Plenum Press, New York, 1967), pp. 67-75.
Lamb, Horace, "On Waves in an Elastic Plate", Proceedings of the Royal Society, Series A, 1917, pp. 114-128.
Barron Jr. Gilberto
Sanders Associates Inc.
Seligman Richard I.
Tubbesing T. H.
LandOfFree
Two dimensional transform utilizing ultrasonic dispersive delay does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Two dimensional transform utilizing ultrasonic dispersive delay , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Two dimensional transform utilizing ultrasonic dispersive delay will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1023939