Patent US5124818A successfully refreshed from Google Patents.
Patent US2780909A successfully refreshed from Google Patents.
Patent US4060792A successfully refreshed from Google Patents.
US4060792A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hard clipped beam former
Assignee: Raytheon Co
•
Filing: 1976-06-17
•
Granted: 1977-11-29
•
Expires: 1996-06-17
Abstract
Abstract A cylindrical array of radiating elements or sonar transducers each of which is coupled by a clipping circuit to a multiply tapped shift register for imparting delays to the signals of the elements for forming a beam of radiant energy. Sidelobes on the radiation pattern are reduced by multiplying the signals of the shift registers by weighting factors prior to their summation for forming a beam, clipped signals serving as unitary factors of positive or negative sign in the multiplication.
Inventors
- 👤 Arent H. Kits van Heyningen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:18
CPC Classifications
H; H01; H01Q; H01Q21/00; H01Q21/06; H01Q21/22; G; G01; G01S; G01S7/00; G01S7/52; G01S7/52003; G10; G10K; G10K11/00; G10K11/18; G10K11/26; G10K11/34; G10K11/341; G10K11/346; Y; Y10; Y10S; Y10S367/00; Y10S367/905
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
178 words
A beam forming system coupled to individual elements of an array of radiating elements, the beam forming system comprising: means coupled to individual ones of said radiating elements for clipping signals produced by said radiating elements in response to radiation incident thereupon; means for weighting said clipped signals, individual ones of said clipping signals from individual ones of said radiating elements being multiplied by individual weighting factors, the magnitude of a weighting factor being dependent on the position of the corresponding one of said radiating elements relative to the orientation of a beam to be formed by said beam forming system, said weighting being accomplished by affixing a sign to weighting factors of said weighting means, said sign depending on the relative phases of signals incident upon said radiating elements of said array; means coupled to said weighting means for summing together the weighted values of said signals; and means coupled to said summing means for filtering the sum of the weighted clipped signals, said filtering means including a low pass filter for providing a continuous analog waveform.
Claim 2
Dependent Claim
178 words
A beam forming system coupled to individual elements of an array of radiating elements, the beam forming system comprising: means coupled to individual ones of said radiating elements for clipping signals produced by said radiating elements in response to radiation incident thereupon; means for weighting said clipped signals, individual ones of said clipping signals from individual ones of said radiating elements being multiplied by individual weighting factors, the magnitude of a weighting factor being dependent on the position of the corresponding one of said radiating elements relative to the orientation of a beam to be formed by said beam forming system, said weighting being accomplished by affixing a sign to weighting factors of said weighting means, said sign depending on the relative phases of signals incident upon said radiating elements of said array; means coupled to said weighting means for summing together the weighted values of said signals; and means coupled to said summing means for filtering the sum of the weighted clipped signals, said filtering means including a low pass filter for providing a continuous analog waveform.
Claim 3
Dependent Claim
30 words
A system according to claim 1 further comprising means coupled to said weighting means for commuting said weighting factors among the clipped signals of respective ones of said radiating elements.
Claim 4
Dependent Claim
25 words
A system according to claim 1 wherein said low pass filter has a passband equal to the bandwidth of a signal received by said array.
Claim 5
Dependent Claim
162 words
A beam forming system for combining signals of individual elements of an array of radiating elements, the beam forming system comprising: means coupled to individual ones of said radiating elements for equalizing the amplitudes of signals produced by individual ones of said radiating elements in response to radiation incident thereupon; means for weighting individual ones of said signals having equal amplitudes to provide weighted signals, the magnitude of the weighting being dependent on the position of the corresponding one of said radiating elements for each of said equal amplitude signals relative to said array, said weighting being accomplished be affixing a sign to weighting factors of said weighting means, said sign depending on the relative phases of signals incident upon said radiating elements of said array; and means coupled to said weighting means for providing a filtered summation of said weighting signals, the bandwidth of said filtered summation being equal to the bandwidth of one of said signals of said radiating elements.
Claim 6
Dependent Claim
162 words
A beam forming system for combining signals of individual elements of an array of radiating elements, the beam forming system comprising: means coupled to individual ones of said radiating elements for equalizing the amplitudes of signals produced by individual ones of said radiating elements in response to radiation incident thereupon; means for weighting individual ones of said signals having equal amplitudes to provide weighted signals, the magnitude of the weighting being dependent on the position of the corresponding one of said radiating elements for each of said equal amplitude signals relative to said array, said weighting being accomplished be affixing a sign to weighting factors of said weighting means, said sign depending on the relative phases of signals incident upon said radiating elements of said array; and means coupled to said weighting means for providing a filtered summation of said weighting signals, the bandwidth of said filtered summation being equal to the bandwidth of one of said signals of said radiating elements.
Claim 7
Dependent Claim
17 words
A system according to claim 4 wherein said signal equalizing means includes means for sampling said signals.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-11-28 | 1981-05-30 | 1981-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-11-28 | 1985-05-30 | 1985-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-11-28 | 1989-05-30 | 1989-11-29 | $7700.00 | Window Closed / Lapsed |