Antenna Multiplexing Circuit for Concurrent Bluetooth and WiFi
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Solution Overview
Problem
The increasing number of antennas in electronic devices for wireless communication functions, such as Bluetooth and WIFI, leads to space constraints and interference issues, making it difficult to simultaneously support both functions without compromising performance.
Innovation Solution
A circuit is designed to multiplex a cellular antenna for both Bluetooth and WIFI communication by using switching modules and transceivers, allowing simultaneous operation through radio frequency domain processing and antenna multiplexing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate antennas are disposed for Bluetooth and WIFI communication, then wireless communication functions can be supported, but space layout becomes increasingly tight and difficult to manage
Solution Approach 1:
The patent applies antenna multiplexing technology where a single cellular antenna is configured to support multiple wireless communication functions (cellular, Bluetooth, and WIFI) simultaneously. The antenna is coupled to a switching module that routes different communication signals to the same antenna, eliminating the need for separate antennas for each function and thus saving space in the electronic device.
2Area of stationary object
If a cellular antenna is multiplexed for Bluetooth communication, then antenna space is optimized, but signal interference between different communication protocols may occur
Solution Approach 1:
The patent employs a switching module that dynamically routes different communication signals (cellular, Bluetooth, WIFI) to the shared antenna based on current communication needs. The switching module changes connection states dynamically to ensure that only one signal type is transmitted through the antenna at any given moment, thereby preventing signal interference while optimizing antenna usage.
3Area of stationary object
If switching modules are added to enable antenna multiplexing, then antenna usage is optimized, but circuit complexity increases
Solution Approach 1:
The patent introduces a switching module as an intermediary component between the transceivers and the shared antenna. This switching module acts as a mediator that manages the connection between different communication protocols and the antenna, enabling efficient antenna multiplexing while keeping the overall circuit design manageable through centralized control.
Data Source
AI summary
Embodiments of this application relate to the field of radio frequency circuit technologies, and disclose a circuit for implementing antenna multiplexing, to connect a BT communication signal to a cellular communication link, so as to multiplex a cellular antenna to implement synchronous execution of BT communication and WIFI communication. The circuit includes: a first transceiver, where the first transceiver includes a BT communication port; and a first switching module, where the first switching module includes a first switching module first end and a first switching module second end that are used for input and a first switching module third end that is used for output. The first switching module includes a first working state, and in the first working state, the first switching module first end is connected to the first switching module third end, so that the first antenna is configured to perform BT communication.