US3582790A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hybrid coupler receiver for lossless signal combination
Assignee: ADAMS-RUSSELL ELECTRONICS Co Inc 1380 MAIN ST WALTHAM MA 02154 ("A-R") A CORP OF
•
Filing: 1969-06-03
•
Granted: 1971-06-01
•
Expires: 1989-06-03
Abstract
Abstract The apparatus disclosed herein is operative to combine a pair of input signals having arbitrary amplitude and phase relationships in such a way as to provide a single output signal equal in power to the sum of the available power of the two input signals. The apparatus employs hybrid couplers to obtain certain intermediate signals and phase shifters to obtain necessary phase relationships.
Inventors
- 👤 John P Curtis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:04
CPC Classifications
H; H04; H04B; H04B7/00; H04B7/02; H04B7/04; H04B7/08; H04B7/0837; H04B7/084
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
196 words
Apparatus for efficiently combining a pair of input sigNals which are of the same frequency and have arbitrary amplitude and phase relationships, said apparatus comprising: a first adjustable phase shifter for shifting the phase of one of said input signals; a first hybrid coupler for combining the phase shifted signal and the other input signal thereby to provide a pair of intermediate signals; a second adjustable phase shifter for shifting the phase of one of said intermediate signals; a second hybrid coupler for combining the phase shifted intermediate signal and the other intermediate signal thereby to provide a sum output signal and a difference output signal; means for detecting the component of said difference output signal which is in quadrature with said sum output signal thereby to provide a first error signal; servo means responsive to said first error signal for adjusting said second phase shifter to minimize said quadrature component; means for detecting the component of said difference output signal which is inphase with said sum output signal thereby to provide a second error signal; and servo means responsive to said second error signal for adjusting said first phase shifter to minimize said inphase component.
Claim 2
Dependent Claim
196 words
Apparatus for efficiently combining a pair of input sigNals which are of the same frequency and have arbitrary amplitude and phase relationships, said apparatus comprising: a first adjustable phase shifter for shifting the phase of one of said input signals; a first hybrid coupler for combining the phase shifted signal and the other input signal thereby to provide a pair of intermediate signals; a second adjustable phase shifter for shifting the phase of one of said intermediate signals; a second hybrid coupler for combining the phase shifted intermediate signal and the other intermediate signal thereby to provide a sum output signal and a difference output signal; means for detecting the component of said difference output signal which is in quadrature with said sum output signal thereby to provide a first error signal; servo means responsive to said first error signal for adjusting said second phase shifter to minimize said quadrature component; means for detecting the component of said difference output signal which is inphase with said sum output signal thereby to provide a second error signal; and servo means responsive to said second error signal for adjusting said first phase shifter to minimize said inphase component.
References Cited (Backward Citations)
US3036301A
Cited
US3174104A
Cited
US3176297A
Cited
US3478269A
Cited
US3329897A
Cited
US3295134A
Cited
US3517317A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-31 | 1974-11-30 | 1975-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-31 | 1978-11-30 | 1979-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-31 | 1982-11-30 | 1983-06-01 | $7700.00 | Window Closed / Lapsed |