Integrated RF Transceiver Switching for Multi-Mode Wearables
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Solution Overview
Problem
Existing RF transceivers for wireless communication devices require external switch devices, which increase printed circuit board area, power consumption, and manufacturing costs, making them unsuitable for high-volume, low-cost production of wearable devices.
Innovation Solution
An integrated RF transceiver with a receive path and two transmit paths, each utilizing a switch configured within the same integrated circuit, allowing for multi-mode operation by controlling switches to select between receive and transmit paths, reducing the need for external components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If external switch devices are used in RF transceivers, then signal transmission and reception functions are achieved, but printed circuit board area increases
Solution Approach 1:
The patent integrates the switch device and RF amplifier onto a single semiconductor die, combining functions that were previously implemented as separate external components. This integration eliminates the need for external switch devices, thereby reducing printed circuit board area while maintaining signal transmission functionality.
Solution Approach 2:
The semiconductor device is designed to perform multiple functions including switching and RF amplification within a single component. This multi-functional approach allows the system to achieve both signal transmission and reception without requiring separate dedicated components, reducing overall board area.
2Adaptability or versatility
If external switch devices are used in RF transceivers, then signal routing between multiple paths is enabled, but power consumption increases
Solution Approach 1:
By integrating the switch and amplifier functions into a single semiconductor device, the patent reduces the number of external components and interconnections required. This integration minimizes power consumption associated with component operation and inter-component signaling while preserving the ability to route signals between multiple transmit and receive paths.
3Adaptability or versatility
If external switch devices are used in RF transceivers, then multi-mode operation is achieved, but manufacturing costs increase
Solution Approach 1:
The integration of switch and RF amplifier functions into a single semiconductor die reduces the total component count and assembly complexity. This consolidation lowers manufacturing costs through reduced bill of materials, simplified assembly processes, and improved yield, while maintaining multi-mode operation capabilities through integrated circuit design.
Solution Approach 2:
The semiconductor device is designed with multi-functional capabilities that enable various transmit and receive modes without requiring additional external components. This universal design approach achieves adaptability through a single component, reducing manufacturing complexity and cost compared to using multiple specialized external devices.
Data Source
AI summary
A transceiver includes a receive path including a low noise amplifier and a first switch coupled between the low noise amplifier and ground, a first transmit path including a low power amplifier and a second switch coupled between the low power amplifier and a main signal path, and a second transmit path including a high power amplifier and a third switch coupled between the main signal path and ground. The receive path is active when the first, second, and third switches are in an open position, the first transmit path is active when the first switch is in a closed position, the second switch is in the closed position, and the third switch is in the open position, and the second transmit path is active when the first switch and the third switch are in the closed position, and the second switch is in the open position.