US4259641A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Linearized detector/rectifier circuit
Assignee: Individual
•
Filing: 1978-12-11
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Granted: 1981-03-31
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Expires: 1998-12-11
Abstract
Abstract Circuit for use in the rectification and detection of alternating electrical signals. The circuit employs a feedback amplifier in combination with a non-linear rectifier element to provide an output signal which has a linear relationship to the input signal notwithstanding the non-linear characteristic of the rectifier element. In some embodiments, the circuit is also capable of power gain and/or frequency selectivity.
Inventors
- 👤 Donald W. Carow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:59
CPC Classifications
H; H03; H03D; H03D1/00; H03D1/08; H03D1/10
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
88 words
In a rectifier/detector circuit: a non-linear rectifier delivering an output voltage which is a non-linear function of the input voltage applied thereto, a node point connected to the input of the rectifier, means for delivering a signal current to the node point, and amplifier means responsive to the node point voltage with a feedback connection between the output of the amplifier means and the node point for adjusting the node point voltage to maintain a linear relationship between the signal current and the output voltage of the rectifier.
Claim 2
Dependent Claim
88 words
In a rectifier/detector circuit: a non-linear rectifier delivering an output voltage which is a non-linear function of the input voltage applied thereto, a node point connected to the input of the rectifier, means for delivering a signal current to the node point, and amplifier means responsive to the node point voltage with a feedback connection between the output of the amplifier means and the node point for adjusting the node point voltage to maintain a linear relationship between the signal current and the output voltage of the rectifier.
Claim 3
Dependent Claim
38 words
The rectifier/detector circuit of claim 1 wherein the means for delivering the signal current includes means responsive to an input signal for delivering to the node point a current having a substantially linear relationship to the input signal.
Claim 4
Dependent Claim
23 words
The rectifier/detector circuit of claim 1 wherein the feedback connection includes means for selectively passing signals at the frequency of the signal current.
Claim 5
Dependent Claim
20 words
The rectifier/detector circuit of claim 1 together with impedance means connecting the node point to the input of the rectifier.
Claim 6
Dependent Claim
27 words
The rectifier/detector circuit of claim 1 together with means for delivering an additional current from the output of the amplifier means to the input of the rectifier.
Claim 7
Dependent Claim
33 words
The rectifier/detector circuit of claim 5 wherein the means for delivering the additional current includes a frequency selective impedance connected between the output of the amplifier means and the input of the rectifier.
Claim 8
Dependent Claim
14 words
The rectifier/detector circuit of claim 1 wherein the amplifier means comprises a tuned amplifier.
Claim 9
Dependent Claim
23 words
The rectifier/detector circuit of any of claims 1-7 wherein the signal current is delivered to the node point through a current step-up transformer.
Claim 10
Dependent Claim
93 words
In a rectifier-detector circuit: a non-linear rectifier for delivering an output voltage which is a non-linear function of the input voltage applied thereto, a node point connected to the input of the rectifier, means including a voltage-driven transformer for delivering a signal current to the node point, and amplifier means responsive to the node point voltage with a feedback connection between the output of the amplifier means and the node point for adjusting the node point voltage to maintain a linear relationship between the signal current and the output voltage of the rectifier.
Claim 11
Dependent Claim
93 words
In a rectifier-detector circuit: a non-linear rectifier for delivering an output voltage which is a non-linear function of the input voltage applied thereto, a node point connected to the input of the rectifier, means including a voltage-driven transformer for delivering a signal current to the node point, and amplifier means responsive to the node point voltage with a feedback connection between the output of the amplifier means and the node point for adjusting the node point voltage to maintain a linear relationship between the signal current and the output voltage of the rectifier.
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) | 1984-03-30 | 1984-09-29 | 1985-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-30 | 1988-09-29 | 1989-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-30 | 1992-09-29 | 1993-03-31 | $7700.00 | Window Closed / Lapsed |