US3882332A
Expired / Lapsed
US
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Piezoelectric phase detector
Assignee: Boeing North American Inc
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Filing: 1971-08-20
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Granted: 1975-05-06
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Expires: 1991-08-20
Abstract
Abstract A phase detector using crystal filters in two signal paths subject to signal phase detection with a single piezoelectric material unit common to and interconnecting the crystal filters of the two signal paths. A signal combining electrode also on the single piezoelectric material unit is connected to a following amplitude detection circuit section.
Inventors
- 👤 Edward M Frymoyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:48
CPC Classifications
H; H03; H03D; H03D3/00; H03D3/02; H03D3/06; H03D3/16
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
92 words
In a phase detector circuit unit using crystal filters, a phase detector section; first signal source means; second signal source means; first crystal filter means circuit connected to said first signal source means; second crystal filter means circuit connected to said second signal source means; said first and second crystal filter means having substantially identical phase characteristics and phase temperature behavior, piezoelectric material means common to and interconnecting said first and second crystal filter means; and signal combining electrode means on said piezoelectric material means circuit connected in said phase detector section.
Claim 2
Dependent Claim
92 words
In a phase detector circuit unit using crystal filters, a phase detector section; first signal source means; second signal source means; first crystal filter means circuit connected to said first signal source means; second crystal filter means circuit connected to said second signal source means; said first and second crystal filter means having substantially identical phase characteristics and phase temperature behavior, piezoelectric material means common to and interconnecting said first and second crystal filter means; and signal combining electrode means on said piezoelectric material means circuit connected in said phase detector section.
Claim 3
Dependent Claim
18 words
The phase detector circuit unit of clAim 1, wherein said piezoelectric materials means is a piezoelectric material plate.
Claim 4
Dependent Claim
44 words
The phase detector circuit unit of claim 2, wherein said first crystal filter means includes a first signal input electrode deposited on said piezoelectric material plate; and said second crystal filter means includes a second signal input electrode deposited on said piezoelectric material plate.
Claim 5
Dependent Claim
24 words
The phase detector circuit unit of claim 3, wherein said signal combining electrode means is a third electrode deposited on said piezoelectric material plate.
Claim 6
Dependent Claim
44 words
The phase detector circuit unit of claim 4, wherein said first, second, and third electrodes are deposited on a first common face of said piezoelectric plate; and voltage potential reference source connected electrode means is deposited on a second face of said piezoelectric plate.
Claim 7
Dependent Claim
27 words
The phase detector circuit unit of claim 4, wherein said first and second signal input electrodes are substantially the same in area and substantially the same thickness.
Claim 8
Dependent Claim
46 words
The phase detector circuit unit of claim 6, wherein said piezoelectric material plate has opposite first and second spaced substantially parallel faces; and with said first and second signal input electrodes deposited on said first face, and said third electrode is deposited on said second face.
Claim 9
Dependent Claim
60 words
The phase detector circuit unit of claim 7, wherein said first signal source is circuit connected both to said first signal input electrode and through first capacitive means to a voltage potential reference source; and said second signal source is circuit connected both to said second signal input electrode and through second capacitive means to said voltage potential reference source.
Claim 10
Dependent Claim
52 words
The phase detector circuit unit of claim 4, wherein first band pass filter means is included in the signal circuit path between said first signal source and said first electrode; and second band pass filter means is included in the signal circuit path between said second signal source and said second electrode.
Claim 11
Dependent Claim
31 words
The phase detector circuit unit of claim 9, wherein capacitive signal phase shifting means is also included in the signal circuit path between said second signal source and said second electrode.
References Cited (Backward Citations)
US3617923A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-05 | 1978-11-04 | 1979-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-05 | 1982-11-04 | 1983-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-05 | 1986-11-04 | 1987-05-06 | $7700.00 | Window Closed / Lapsed |