Oscillator Package Layout for Accurate RF Amplifier Temperature Sensing
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Solution Overview
Problem
Conventional RF energy radiation devices face inaccuracies in temperature detection due to thermal resistance and delay in heat transmission from the RF amplifier to the temperature sensor, leading to errors in temperature measurement and microwave control.
Innovation Solution
An oscillator design that includes a signal generator, power amplifier, and temperature sensor, where the temperature sensor is packaged with the final stage device, allowing for accurate temperature detection and control of microwaves by reducing thermal resistance and detection delay.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the temperature sensor is disposed separately from the final stage device, then the device complexity is reduced, but the temperature detection accuracy deteriorates due to thermal resistance and heat transmission delay
Solution Approach 1:
The temperature sensor is integrated into the same package as the final stage device, merging the sensing element with the heat-generating component. This co-location eliminates thermal resistance issues and heat transmission delays, enabling accurate real-time temperature monitoring of the final stage device without requiring separate external sensing arrangements.
2Measurement precision
If the temperature sensor is disposed in the package including the final stage device, then the temperature detection accuracy is improved, but the device complexity increases
Solution Approach 1:
The temperature sensor is integrated into the same package as the final stage device, merging the sensing element with the heat-generating component. This co-location eliminates thermal resistance issues and heat transmission delays, enabling accurate real-time temperature monitoring of the final stage device without requiring separate external sensing arrangements.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration enables precise temperature monitoring of the final stage device, improving the accuracy of microwave generation and reducing the need for circulators and termination resistors, resulting in a more compact and efficient RF energy radiation device.
Implementation Method 1
a difference may occur between the actual temperature of the RF amplifier and the temperature detected by the temperature sensor. This difference is due to an error in the absolute temperature value caused by the thermal resistance from the RF amplifier to the temperature sensor
Data Source
AI summary
An oscillator (1) according to the present disclosure generates output power, and provides a microwave that is in accordance with the output power as an output wave. The oscillator (1) includes a signal generator (10), a power amplifier (20), and a temperature sensor (40). The signal generator (10) generates an oscillation signal. The power amplifier (20) includes a final stage device (22), and amplifies the oscillation signal to generate the output power. The temperature sensor (40) detects a temperature of the final stage device (22). The final stage device (22) is packaged. The temperature sensor (40) is disposed in a package (200) that includes the final stage device (22).