Shared Antenna Switching for WLAN and Bluetooth Access Control
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Solution Overview
Problem
Existing wireless communication products often use a single antenna for multiple protocols, such as WLAN and Bluetooth, which can lead to inefficient antenna management and interference, affecting the proper functioning of these protocols.
Innovation Solution
An electronic device with a line switching circuit, first and second communication chips, and a logic circuit that generates slot allocation and packet transceiving signals to control the antenna, ensuring that only one communication chip uses the antenna at a time based on signal priorities, thereby optimizing antenna usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a single antenna is used for multiple wireless communication protocols, then product cost and volume are reduced, but antenna management efficiency deteriorates and interference increases
Solution Approach 1:
The patent implements dynamic antenna allocation by introducing a line switching circuit that can dynamically switch the antenna connection between different communication chips based on real-time communication needs. The logic circuit receives slot allocation signals and packet transceiving request signals to control the switching timing, making the antenna connection flexible and adaptive rather than fixed, thereby resolving the contradiction between using a single antenna and maintaining efficient management.
Solution Approach 2:
The patent segments the antenna usage into distinct time slots for different communication protocols. The logic circuit divides the antenna access into WLAN slots and Bluetooth slots based on slot allocation signals, allowing each protocol to have dedicated time periods for transmission and reception. This temporal segmentation enables efficient management of the shared antenna while reducing interference between protocols.
2Device complexity
If a single antenna is shared among multiple protocols, then hardware complexity is reduced, but signal interference increases
Solution Approach 1:
The patent employs periodic action by organizing antenna access into regular time slots for different communication protocols. The logic circuit uses slot allocation signals to create periodic WLAN access periods and Bluetooth access periods, ensuring that each protocol has dedicated time windows for communication. This periodic structure reduces signal interference by preventing simultaneous access while maintaining simple hardware through time-division multiplexing.
Data Source
AI summary
An electronic device and an antenna control method are provided. The electronic device includes an antenna, a line switching circuit, a first communication chip, a second communication chip, and a logic circuit. The line switching circuit is coupled to the antenna. The first communication chip is coupled to the antenna through the line switching circuit and configured to generate a slot allocation signal. The second communication chip is coupled to the antenna through the line switching circuit and configured to generate a packet transceiving request signal. The first communication chip and the second communication chip are communication chips of different types. The logic circuit is coupled to the first communication chip and the second communication chip and configured to control the line switching circuit according to the slot allocation signal and the packet transceiving request signal.