Portable Communication Device Antenna Distribution Circuit
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Solution Overview
Problem
Portable communication devices that share an antenna and RF front end module for multiple wireless communication protocols often face issues where deactivation of one communication circuit leads to the deactivation of other circuits, affecting communication efficiency.
Innovation Solution
A portable communication device design that includes separate communication circuits and low noise amplifiers for each frequency band, with a distributor to connect the antenna to both circuits, allowing one circuit to remain active even when the other is not driven, ensuring continuous communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If an antenna and RF front end module are shared by multiple wireless communication protocols, then device complexity is reduced, but communication reliability deteriorates because deactivation of one communication circuit causes other circuits to be deactivated
Solution Approach 1:
The patent segments the communication system into independent protocol processing units (first communication circuit and second communication circuit), each with dedicated low noise amplifiers (first LNA and second LNA). This segmentation allows each communication protocol to operate independently without affecting others, resolving the reliability issue while maintaining shared antenna and RF front end module infrastructure.
Solution Approach 2:
The patent introduces a switching mechanism as an intermediary between the shared antenna/RF front end module and the multiple communication circuits. This switching mechanism enables selective connection of different communication circuits to the shared resources, allowing independent control and activation of each protocol without mutual interference.
2Use of energy by moving object
If communication circuits are deactivated to save energy, then energy consumption is reduced, but communication availability deteriorates because all protocols become unavailable
Solution Approach 1:
The patent implements dynamic control of communication circuits, allowing the system to selectively activate only the required communication protocol based on current operational needs. This dynamic activation/deactivation capability enables energy savings when certain protocols are not needed, while maintaining the ability to switch between protocols as requirements change, thus preserving communication availability.
Solution Approach 2:
The patent changes the operational state parameters of communication circuits dynamically, transitioning between active and inactive states based on protocol requirements. This parameter control allows the system to optimize energy consumption by deactivating unnecessary circuits while maintaining the capability to activate them when needed, balancing energy efficiency with communication versatility.
Data Source
AI summary
A portable communication device is Provided for supporting multiple different communication networks. The portable communication device includes an antenna configured to receive a first signal of a first frequency band corresponding to a first cellular network, and a second signal of a second frequency band corresponding to a second cellular network; a first communication circuit electrically connected to the antenna and corresponding to the first cellular network; a second communication circuit electrically connected to the antenna and corresponding to the second cellular network; a distributor configured to electrically connect the antenna to the first communication circuit and the second communication circuit; a first low noise amplifier (LNA) connected between the distributor and the first communication circuit; and a second LNA connected between the distributor and the second communication circuit. While one of the first communication circuit and the second communication circuit is not driven, the other communication circuit is configured to be driven.