US4902987A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inductive modulator system
Assignee: KAYE-BRIGHT BROOKE
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Filing: 1989-04-21
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Granted: 1990-02-20
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Expires: 2009-04-21
Abstract
Abstract A magnetic induction modulation and frequency multiplication system includes three toroidal coils physically mounted close to one another to provide magnetic flux coupling between them. One of the coils is supplied with a relatively high frequency carrier signal which has been shaped to eliminate one or the other of the positive or negative excursions thereof. A second coil is provided with an audio signal or other suitable input signal. The third coil constitutes the output coil and is utilized to provide signals to a transmitting circuit coupled to a transmitting antenna. The output signal from the third coil constitutes an amplitude modulated and phase/frequency modulated signal directly produced through the mutual inductive coupling of the three coils.
Inventors
- 👤 Eugene A. Albright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:01
CPC Classifications
H; H03; H03C; H03C3/00; H03C3/10; H03C3/12; H03C3/18; H03C1/00; H03C1/08; H03C1/10; H03C1/52; H03C1/60
Claims Analysis
Total Claims: 40
Claim 1
Independent Claim
84 words
An inductive modulator system including in combination: a source of carrier signals including a shaping circuit for supplying unidirectional pulses on the output of said source of carrier signals; a source of information input signals; a first coil connected to the output of said source of carrier signals; a second coil connected to said source of information input signals and inductively coupled with said first coil; and a third coil inductively coupled with said first and second coils for supplying an output signal therefrom.
Claim 2
Dependent Claim
84 words
An inductive modulator system including in combination: a source of carrier signals including a shaping circuit for supplying unidirectional pulses on the output of said source of carrier signals; a source of information input signals; a first coil connected to the output of said source of carrier signals; a second coil connected to said source of information input signals and inductively coupled with said first coil; and a third coil inductively coupled with said first and second coils for supplying an output signal therefrom.
Claim 3
Dependent Claim
17 words
The combination according to claim 1 wherein said first, second and third coils each are toroidal coils.
Claim 4
Dependent Claim
21 words
The combination according to claim 2 further including means coupled with said third coil for supplying signals to a transmitting antenna.
Claim 5
Dependent Claim
14 words
The combination according to claim 3 wherein said shaping circuit comprises half-wave rectifier means.
Claim 6
Dependent Claim
29 words
The combination according to claim 4 wherein the power level of said source of information input signals is greater than the power level of said source of carrier signals.
Claim 7
Dependent Claim
17 words
The combination according to claim 5 wherein each of said coils are oriented on a common axis.
Claim 8
Dependent Claim
31 words
The combination according to claim 6 wherein said power level of said source of information input signals is several times greater than the power level of said source of carrier signals.
Claim 9
Dependent Claim
18 words
The combination according to claim 7 wherein said source of information input signals is an audio signal input.
Claim 10
Dependent Claim
20 words
The combination according to claim 8 wherein said first, second and third coils are mounted on a common ferrite core.
Claim 11
Dependent Claim
32 words
The combination according to claim 1 wherein said first and third coils are on a first common axis and said second coil is located on an axis perpendicular to said first axis.
Claim 12
Dependent Claim
20 words
The combination according to claim 10 wherein said second axis intersects said first axis between said first and third coils.
Claim 13
Dependent Claim
35 words
The combination according to claim 11 further including first and second magnetic cores, wherein said first and third coils are mounted on said first core and said third coil is mounted on said second core.
Claim 14
Dependent Claim
17 words
The combination according to claim 12 wherein said first, second and third coils each are toroidal coils.
Claim 15
Dependent Claim
29 words
The combination according to claim 13 wherein the power level of said source of information input signals is greater than the power level of said source of carrier signals.
Claim 16
Dependent Claim
21 words
The combination according to claim 14 further including means coupled with said third coil for supplying signals to a transmitting antenna.
Claim 17
Dependent Claim
26 words
The combination according to claim 15 wherein said source of carrier signals further includes a shaping circuit for supplying unidirectional signal pulses to said first coil.
Claim 18
Dependent Claim
14 words
The combination according to claim 16 wherein said shaping circuit comprises half-wave rectifier means.
Claim 19
Dependent Claim
21 words
The combination according to claim 1 further including means coupled with said third coil for supplying signals to a transmitting antenna.
Claim 20
Dependent Claim
20 words
The combination according to claim 1 wherein said first, second and third coils are mounted on a common ferrite core.
Claim 21
Dependent Claim
17 words
The combination according to claim 1 wherein each of said coils are oriented on a common axis.
Claim 22
Dependent Claim
18 words
The combination according to claim 1 wherein said source of information input signals is an audio signal input.
Claim 23
Dependent Claim
148 words
A dual signal inductive modulator system including in combination: a first source of carrier signals; a first source of information input signals; a first coil connected to said first source of carrier signals; a second coil connected to said first source of information input signals and inductively coupled with said first coil; a third coil inductively coupled with said first and second coils for supplying an output signal therefrom; a second source of carrier signals; a second source of information input signals; a fourth coil connected to said second source of carrier signals; a fifth coil connected to said second source of information input signals and inductively coupled with said fourth coil; a sixth coil inductively coupled with said fourth and fifth coils for supplying an output signal therefrom; and means for combining the output signals from said third and sixth coils to produce a composite output signal.
Claim 24
Dependent Claim
148 words
A dual signal inductive modulator system including in combination: a first source of carrier signals; a first source of information input signals; a first coil connected to said first source of carrier signals; a second coil connected to said first source of information input signals and inductively coupled with said first coil; a third coil inductively coupled with said first and second coils for supplying an output signal therefrom; a second source of carrier signals; a second source of information input signals; a fourth coil connected to said second source of carrier signals; a fifth coil connected to said second source of information input signals and inductively coupled with said fourth coil; a sixth coil inductively coupled with said fourth and fifth coils for supplying an output signal therefrom; and means for combining the output signals from said third and sixth coils to produce a composite output signal.
Claim 25
Dependent Claim
34 words
The combination according to claim 22 wherein said first, second and third coils are oriented on a first common axis and said fourth, fifth, and sixth coils are oriented on a second common axis.
Claim 26
Dependent Claim
23 words
The combination according to claim 23 wherein said first and second sources of information input signals are different channels of stereophonic audio signals.
Claim 27
Dependent Claim
24 words
The combination according to claim 24 further including a transmitting antenna, wherein said combining means supplies said composite output signals to said transmitting antenna.
Claim 28
Dependent Claim
42 words
The combination according to claim 25 wherein said first and second sources of carrier signals comprise first and second shaping circuits connected to a common carrier signal generator for supplying opposite polarity unidirectional signal pulses, respectively, to said first and fourth coils.
Claim 29
Dependent Claim
18 words
The combination according to claim 26 wherein said first and second shaping circuits each comprise half-wave rectifier means.
Claim 30
Dependent Claim
35 words
The combination according to claim 27 wherein the power level of said first and second sources of information input signals is greater than the power level of said first and second sources of carrier signals.
Claim 31
Dependent Claim
13 words
The combination according to claim 28 wherein said coils each are toroidal coils.
Claim 32
Dependent Claim
36 words
The combination according to claim 29 wherein said first, second and third coils are mounted on a first common ferrite core and said fourth, fifth and sixth coils are mounted on a second common ferrite core.
Claim 33
Dependent Claim
23 words
The combination according to claim 22 wherein said first and second sources of information input signals are different channels of stereophonic audio signals.
Claim 34
Dependent Claim
24 words
The combination according to claim 22 further including a transmitting antenna, wherein said combining means supplies said composite output signals to said transmitting antenna.
Claim 35
Dependent Claim
35 words
The combination according to claim 22 wherein the power level of said first and second sources of information input signals is greater than the power level of said first and second sources of carrier signals.
Claim 36
Dependent Claim
42 words
The combination according to claim 22 wherein said first and second sources of carrier signals comprise first and second shaping circuits connected to a common carrier signal generator for supplying opposite polarity unidirectional signal pulses, respectively, to said first and fourth coils.
Claim 37
Dependent Claim
18 words
The combination according to claim 37 wherein said first and second shaping circuits each comprise half-wave rectifier means.
Claim 38
Dependent Claim
23 words
The combination according to claim 35 wherein said first and second sources of information input signals are different channels of stereophonic audio signals.
Claim 39
Dependent Claim
13 words
The combination according to claim 22 wherein said coils each are toroidal coils.
Claim 40
Dependent Claim
36 words
The combination according to claim 22 wherein said first, second and third coils are mounted on a first common ferrite core and said fourth, fifth and sixth coils are mounted on a second common ferrite core.
References Cited (Backward Citations)
US3172061A
Cited
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-02-19 | 1993-08-21 | 1994-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-02-19 | 1997-08-21 | 1998-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-02-19 | 2001-08-21 | 2002-02-20 | $7700.00 | Window Closed / Lapsed |