RF Front-End Circuit Antenna Sensitivity Switching
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Solution Overview
Problem
Existing radio-frequency front-end circuits cannot dynamically prioritize and optimize the transfer of radio-frequency signals across multiple communication systems, leading to suboptimal connectivity between communication partners.
Innovation Solution
A radio-frequency front-end circuit with a switch that dynamically connects antennas to transfer circuits based on antenna sensitivity, allowing for prioritization of communication systems by optimizing signal transfer according to antenna sensitivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a plurality of filters with different passbands are connected to an antenna via a multiplexer, then radio-frequency signals of a plurality of communication bands can be simultaneously transferred, but it is not possible to preferentially select (optimize) a predetermined communication system among a plurality of communication systems
Solution Approach 1:
The patent applies dynamics by making the connection configuration changeable in real-time. The switch dynamically reconfigures the connection between antennas and transfer circuits based on detected antenna sensitivity, allowing the system to adapt its topology to prioritize specific communication systems when needed while maintaining the ability to simultaneously transfer multiple communication systems
2Reliability
If antenna connection is fixed, then device complexity is reduced, but signal transfer optimization according to antenna sensitivity cannot be achieved
Solution Approach 1:
The system implements self-service by automatically detecting antenna sensitivity and autonomously determining the optimal connection configuration without requiring external intervention. The switching control mechanism self-adjusts based on measured parameters, reducing the need for complex external control systems while achieving signal transfer optimization
3Reliability
If dynamic switching between antennas and transfer circuits is implemented, then signal transfer can be optimized according to antenna sensitivity, but device complexity increases
Solution Approach 1:
The patent applies parameter changes by using measurable physical parameters (antenna sensitivity) to control the switching behavior. The system measures sensitivity parameters and uses these measurements to dynamically adjust the connection configuration, transforming a complex control problem into a parameter-driven automatic switching mechanism that improves reliability while keeping control complexity manageable
Data Source
AI summary
A radio-frequency front-end circuit includes a first switch and a first transfer circuit that transfers a first radio-frequency signal. The first switch includes a first antenna terminal connected to a first antenna, a second antenna terminal connected to a second antenna, and first and second selection terminals. The first selection terminal is connected to the first transfer circuit, and the second selection terminal connected to a second transfer circuit. The second transfer circuit transfers the second radio-frequency signal. Selection between conduction of the first antenna terminal with the first selection terminal and conduction of the first antenna terminal with the second selection terminal is exclusively carried out in the first switch. Selection between conduction of the second antenna terminal with the first selection terminal and conduction of the second antenna terminal with the second selection terminal is exclusively carried out in the first switch.