RF Coupler Enables Simultaneous WLAN and Bluetooth Reception
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Solution Overview
Problem
Conventional wireless communications circuitry in handheld devices often experiences service interruptions and dropped data packets due to the inability to simultaneously receive signals from multiple transceivers sharing a single antenna, as they compete for usage, leading to prioritization issues that can affect critical applications like VoIP calls.
Innovation Solution
The implementation of wireless communications circuitry with a radio-frequency coupler and switching circuitry that allows for simultaneous reception of signals by both WLAN and Bluetooth transceivers, using a coupler to divide incoming signals and adjust switching states to bypass the coupler when necessary, ensuring higher signal strength for Bluetooth operations without interfering with WLAN data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a single antenna is shared by two transceivers to minimize device size, then device form factor is reduced, but service interruptions and dropped data packets occur due to competing transceiver access
Solution Approach 1:
The patent segments the signal reception process by using a radio-frequency coupler to divide the incoming signal into multiple separate paths, allowing each transceiver to have its own dedicated signal path while sharing the single antenna. This segmentation enables simultaneous reception by multiple transceivers without mutual interference, resolving the contradiction between compact device size and reliable data reception.
Solution Approach 2:
The radio-frequency coupler acts as an intermediary device between the shared antenna and multiple transceivers. It mediates the signal distribution, dividing the incoming RF signal into separate channels that can be simultaneously accessed by different transceivers. This intermediary component enables reliable simultaneous reception while maintaining the single-antenna compact design.
2Device complexity
If switching circuitry is used to allocate antenna access between transceivers, then device complexity is reduced, but service interruptions occur due to non-simultaneous reception capability
Solution Approach 1:
Instead of using switching circuitry that sequentially connects the antenna to different transceivers, the patent segments the RF signal path using a coupler that creates multiple simultaneous reception paths. This segmentation approach maintains low circuitry complexity while enabling continuous, uninterrupted data reception by multiple transceivers at the same time.
Solution Approach 2:
The coupler-based architecture enables continuous useful action by allowing both transceivers to receive signals simultaneously without switching interruptions. Unlike switching circuitry that must alternate between transceivers, the coupler maintains continuous signal flow to both receivers, eliminating service interruptions and ensuring reliable continuous data reception.
3Reliability
If a coupler is used to divide incoming signals for simultaneous reception, then both transceivers can receive data concurrently, but signal strength is reduced due to signal division
Solution Approach 1:
The patent addresses signal strength reduction by incorporating amplification stages that compensate for the signal division loss. By adjusting the gain parameter of amplifiers in each receiver path, the system maintains adequate signal strength for reliable reception while preserving the simultaneous reception capability provided by the coupler architecture.
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 solution enables simultaneous and uninterrupted reception of WLAN and Bluetooth data, minimizing packet loss and improving the quality of services like VoIP calls by allowing both transceivers to operate concurrently without service interruptions.
Implementation Method 1
the coupler is used to divide the incoming radio-frequency signals into first and second identical power-reduced versions of the incoming radio-frequency signals. These signals are simultaneously provided to the first and second transceivers in parallel.
Data Source
AI summary
Handheld electronic devices are provided that contain wireless communications circuitry. The wireless communications circuitry has simultaneous reception functions that allow the handheld devices to simultaneously receive multiple communications signals in a single communications band. The handheld electronic devices may include cellular telephones with music player functionality or other portable devices. The handheld electronic devices may have local wireless communications capabilities for supporting local wireless links such as WiFi and Bluetooth links. Using the simultaneous reception functions of the wireless communications circuitry, users of the handheld electronic devices can simultaneously receive signals such as WiFi and Bluetooth signals.