Oscillator device

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Solution Overview

Problem

Existing oscillators face limitations in controlling oscillation frequency due to restricted control voltage ranges, leading to issues with bias current generation and increased operating current at high frequencies, especially in low-power scenarios, necessitating a new design to manage frequency output and current variation.

Innovation Solution

An oscillator device that utilizes a control circuit to generate multiple control signals based on input signals, allowing simultaneous output of oscillating signals with the same or different frequencies without requiring monitoring circuits or prevention mechanisms.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Speed

If the control voltage is increased to increase the oscillation frequency, then the oscillation frequency is improved, but the operating current increases significantly

Engineering Contradiction:

Improveoscillation frequencyVSAvoidoperating current

Core Design Contradiction:

SpeedVSUse of energy by moving object

Solution Approach 1:

The patent divides the single oscillation path into two parallel paths with different control voltages. The first path uses a first control voltage for high-frequency operation, while the second path uses a second control voltage for low-frequency operation. This segmentation allows the system to select the appropriate path based on frequency requirements, thereby controlling operating current effectively.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent dynamically switches between two oscillation paths based on the required output frequency. When high frequency is needed, the first oscillation path is activated; when low frequency is needed, the second oscillation path is activated. This dynamic selection optimizes the operating current by avoiding unnecessary current consumption in the inactive path.

Inventive Principle:

Principle #15Dynamics

2Use of energy by moving object

If the control voltage is decreased below the lower limit to reduce operating current, then power consumption is reduced, but the oscillator cannot generate bias current and frequency control is lost

Engineering Contradiction:

Improveoperating currentVSAvoidfrequency control capability

Core Design Contradiction:

Use of energy by moving objectVSReliability

Solution Approach 1:

The patent creates two separate oscillation paths, each with its own control voltage within the valid operating range. The first path is optimized for high-frequency operation with a first control voltage, while the second path is optimized for low-frequency operation with a second control voltage. This ensures that frequency control capability is maintained in both paths without requiring the control voltage to go below the lower limit.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent changes the control voltage parameter differently for the two oscillation paths. The first control voltage is set to a higher value within the operating range for high-frequency oscillation, while the second control voltage is set to a lower value within the operating range for low-frequency oscillation. This parameter differentiation allows each path to operate reliably within its optimal range.

Inventive Principle:

Principle #35Parameter changes

3Device complexity

If a single oscillation path is used to simplify the device structure, then device complexity is reduced, but the oscillator cannot simultaneously output two oscillating signals with different frequencies

Engineering Contradiction:

Improveoscillator structureVSAvoidfrequency output capability

Core Design Contradiction:

Device complexityVSAdaptability or versatility

Solution Approach 1:

The patent divides the oscillator into two parallel oscillation paths, each capable of generating oscillating signals at different frequencies. The first oscillation path generates a first oscillating signal based on a first control voltage, while the second oscillation path generates a second oscillating signal based on a second control voltage. This segmentation enables simultaneous output of two oscillating signals with different frequencies.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent designs the oscillator to have multi-functional capability by providing two oscillation paths that can operate independently or simultaneously. The oscillator can output a single oscillating signal at high frequency, a single oscillating signal at low frequency, or two oscillating signals at different frequencies simultaneously, depending on the application requirements.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS20260019034A1Oscillator device

Publication Date: 2026.01.15 NUVOTON

AI summary

An oscillator device includes a control circuit and an oscillator circuit. The control circuit receives a first input signal and a second input signal, and generates a first control signal and a second control signal. The oscillator circuit is coupled to the control circuit. The oscillator circuit receives the first control signal and the second control signal, and generates a first oscillating signal and a second oscillating signal according to the first control signal and the second control signal.