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US 12,573,814 B2Granted
Capacitive coupling for optical or laser diodes
AssigneeSatius Holding, Inc.
InventorCharles Abraham
Life of this patent
Estimating the term…
Abstract
Aspects of the present disclosure may address the problem of coupling a radio-frequency (RF) input signal to a light-frequency emitting diode, where the output impedance of the device providing the input signal and the diode input impedance differ. A coupler according to aspects of the present disclosure may be a capacitive coupler that may take the form of parallel concentric coils, which may be comprised of wire or metal plate coils, or parallel plates, connected in series with a variable capacitive element. According to a further aspect of the present disclosure, parallel concentric coils and parallel plates may be arranged in parallel, and the input signal to the coupler may be switched to one or the other. The switching may be automated, based on frequency content or amplitude of the input signal.
Claims18
A light emitting, optical, or laser diode-based system including:
- a coupling device coupled between a radio-frequency (RF), analog, or digital input signal and an input to a light emitting, optical, or laser diode, the coupling device including:
- a first fixed capacitive element, wherein the first fixed capacitive element comprises a pair of parallel concentric coils, wherein the RF, analog, or digital input signal is arranged to be coupled to a first one of the pair of coils, and wherein a second one of the pair of coils is arranged to provide an output signal to the variable capacitive element or the second fixed capacitive element;
- and
- a tuning capacitive element, comprising a variable capacitive element or a second fixed capacitive element distinct from the first fixed capacitive element,
- wherein the tuning capacitive element is configured to cause the coupling device to substantially match an input impedance of the light emitting, optical, or laser diode, and
- wherein an input impedance of the coupling device is configured to match an output impedance of a component providing the RF, analog, or digital input signal.
3 more elements
A light emitting, optical, or laser diode-based system including:
- a coupling device coupled between a radio-frequency (RF), analog, or digital input signal and an input to a light emitting, optical, or laser diode, the coupling device including:
- a first fixed capacitive element;
- and
- a tuning capacitive element, comprising a variable capacitive element or a second fixed capacitive element distinct from the first fixed capacitive element,
- wherein the tuning capacitive element is configured to cause the coupling device to substantially match an input impedance of the light emitting, optical, or laser diode, and
- wherein an input impedance of the coupling device is configured to match an output impedance of a component providing the RF, analog, or digital input signal,
- wherein the first fixed capacitive element comprises a pair of parallel conductive plates, wherein a first one of the plates is arranged to be coupled to the RF, analog, or digital input signal, and wherein a second one of the plates is arranged to provide an output signal to the variable capacitive element or the second fixed capacitive element.
4 more elements
A light emitting, optical, or laser diode-based system including:
- a coupling device coupled between a radio-frequency (RF), analog, or digital input signal and an input to a light emitting, optical, or laser diode, the coupling device including:
- a first fixed capacitive element;
- and
- a tuning capacitive element, comprising a variable capacitive element or a second fixed capacitive element distinct from the first fixed capacitive element,
- wherein the tuning capacitive element is configured to cause the coupling device to substantially match an input impedance of the light emitting, optical, or laser diode, and
- wherein an input impedance of the coupling device is configured to match an output impedance of a component providing the RF, analog, or digital input signal,
- wherein the first fixed capacitive element comprises:
- a first capacitive element and a second capacitive element,
- wherein the first capacitive element comprises a pair of parallel concentric coils, wherein the coils are formed of conductive plates, wherein the RF, analog, or digital input signal is arranged to be coupled to a first one of the pair of coils, and wherein a second one of the pair of coils is arranged to provide an output signal to the variable capacitor, and
- wherein the second capacitive element comprises a pair of parallel conductive plates, wherein a first one of the plates is arranged to be coupled to the input signal, and wherein a second one of the plates is arranged to provide an output signal to the variable capacitive element or the second fixed capacitive element;
- a first switch coupled to receive the RF, analog, or digital input signal and to route it to either the first capacitive element or the second capacitive element;
- and
- a second switch coupled to receive an output from the first capacitive element or the second capacitive element and to provide an output signal to the variable capacitive element or the second fixed capacitive element.
10 more elements
A light emitting, optical, or laser diode-based system including:
- a coupling device coupled between a radio-frequency (RF), analog, or digital input signal and an input to a light emitting, optical, or laser diode, the coupling device including:
- a first fixed capacitive element;
- and
- a tuning capacitive element, comprising a variable capacitive element or a second fixed capacitive element distinct from the first fixed capacitive element,
- wherein the tuning capacitive element is configured to cause the coupling device to substantially match an input impedance of the light emitting, optical, or laser diode, and
- wherein an input impedance of the coupling device is configured to match an output impedance of a component providing the RF, analog, or digital input signal,
- wherein the variable capacitive element comprises:
- a first capacitive element having a first impedance;
- and
- a second capacitive element having a second impedance different from the first impedance and arranged in parallel with the first capacitive element.
7 more elements
A light-energy emitting diode-based system including:
- a coupling device coupled between a radio-frequency (RF), analog, or digital input signal and an input to a light-energy emitting diode, the coupling device including:
- a first fixed capacitive element, wherein the first fixed capacitive element comprises a pair of parallel concentric coils, wherein the RF, analog, or digital input signal is arranged to be coupled to a first one of the pair of coils, and wherein a second one of the pair of coils is arranged to provide an output signal to the variable capacitive element, wherein the coils of the respective concentric parallel coils comprise conductive plates wound around respective non-conductive, non-magnetic tubular cores;
- and
- a tuning capacitive element comprising a variable capacitive element or a second fixed capacitive element, distinct from the first fixed capacitive element,
- wherein the tuning capacitive element is configured to cause the coupling device to substantially match an input impedance of the light-energy emitting diode, and
- wherein an input impedance of the coupling device is configured to match an output impedance of a component providing the RF, analog, or digital input signal.
3 more elements
A light-energy emitting diode-based system including:
- a coupling device coupled between a radio-frequency (RF), analog, or digital input signal and an input to a light-energy emitting diode, the coupling device including:
- a first fixed capacitive element;
- and
- a tuning capacitive element comprising a variable capacitive element or a second fixed capacitive element, distinct from the first fixed capacitive element,
- wherein the tuning capacitive element is configured to cause the coupling device to substantially match an input impedance of the light-energy emitting diode, and
- wherein an input impedance of the coupling device is configured to match an output impedance of a component providing the RF, analog, or digital input signal,
- wherein the first fixed capacitive element comprises a pair of parallel conductive plates, wherein a first one of the plates is arranged to be coupled to the RF, analog, or digital input signal, and wherein a second one of the plates is arranged to provide an output signal to the variable capacitor or the second fixed capacitive element.
4 more elements
Dependencies are inferred from the claim text.