Inductive modulator system
OwnerEugene A. Albrightinventor
Life of this patent
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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.
Claims38
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.
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.
The combination according to claim 37 wherein said first and second shaping circuits each comprise half-wave rectifier means.
Dependencies are inferred from the claim text.