Reconfigurable RF Amplifier With Multi-Frequency Oscillation Loops
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Solution Overview
Problem
The existing radio-frequency front end chips have a large area due to the integration of multiple circuits with different technologies, leading to complex structures and difficulties in packaging under size constraints, and are prone to abnormal connections.
Innovation Solution
A reconfigurable high-integration radio-frequency amplifier is designed with a signal source, control circuit, input and output amplification circuits, and an emitting antenna, where a control circuit forms oscillation loops matched to different frequencies, integrating multiple oscillation loops within a single amplification circuit to reduce chip area and improve packaging efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple circuits with different technologies are integrated into a radio-frequency front end chip, then the chip can support multiple frequencies and functions, but the chip area becomes large and packaging becomes complex
Solution Approach 1:
The patent combines multiple oscillation loops for different frequencies (first frequency f1 and second frequency f2) into a single integrated circuit. The input matching circuit, output matching circuit, and multiple amplification circuits are merged into one chip, reducing the overall area compared to separate circuits while maintaining multi-frequency support capability.
Solution Approach 2:
The patent designs a universal amplification circuit that can operate at multiple frequencies through reconfigurable oscillation loops. The same physical circuit structure can be configured to amplify signals at different frequencies by controlling which oscillation loop is active, making the circuit multi-functional rather than requiring separate dedicated circuits for each frequency.
2Adaptability or versatility
If multiple circuits with different technologies are integrated into a radio-frequency front end chip, then the chip can support multiple frequencies and functions, but the structure becomes complex and packaging becomes difficult
Solution Approach 1:
The patent merges multiple circuits into a single integrated structure with shared components. The input matching circuit, output matching circuit, and multiple amplification circuits share common elements, reducing the overall structural complexity compared to having completely separate circuits for each frequency.
Solution Approach 2:
The patent employs reconfigurable oscillation loops that can be dynamically activated or deactivated based on the required frequency. This dynamic configuration allows the circuit to adapt its structure for different operating conditions, simplifying the overall design by using a single reconfigurable path rather than multiple fixed paths.
Data Source
AI summary
When a signal source sends a radio-frequency signal to an input amplification circuit, a control circuit sends a first control signal to the input amplification circuit according to the frequency of the radio-frequency signal, the input amplification circuit receives the first control signal and forms an input oscillation loop, the radio-frequency signal forms an amplified first signal through the input oscillation loop, and the input amplification circuit sends the first signal to the output amplification circuit. According to the frequency of the radio-frequency signal, the control circuit transmits a second control signal to the output amplification circuit, which forms an output oscillation loop matched with the first signal. The first signal is amplified by the output oscillation loop to form an emitting signal, the output amplification circuit transmits the emitting signal to the emitting antenna for emitting, thereby improving the utilization ratio of a radio-frequency front end chip package.