Terminal RF Circuit Layer Layout for 5G Antenna Space Constraints
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Solution Overview
Problem
The increasing number of antennas in mobile terminals for 5G communications requires more structural space for radio frequency coaxial lines, leading to reduced internal space efficiency and potential reliability issues with antenna performance due to longer connections.
Innovation Solution
The implementation of a radio frequency circuit layer between the screen and the middle frame, allowing antennas to connect directly or via short radio frequency lines to the main board, thereby reducing space occupation and ensuring reliable contact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the quantity of antennas is increased to support 5G multi-mode system, then the transmission speed and communication capability are improved, but the internal space of the terminal is occupied and the structural layout becomes more difficult
Solution Approach 1:
The patent transitions from a traditional planar antenna layout to a three-dimensional spatial configuration by placing antennas on the periphery of the middle frame and using space-efficient routing paths. The radio frequency coaxial line is routed through the screen assembly and middle frame structure, utilizing vertical and lateral dimensions to reduce space occupation compared to conventional flat layouts.
Solution Approach 2:
The middle frame structure serves multiple functions: it acts as a structural support component, an antenna mounting platform, and a routing channel for radio frequency coaxial lines. The screen assembly also serves dual purposes as both a display component and a pathway for coaxial line transmission, reducing the need for dedicated space for each function.
2Reliability
If the antenna feed point is connected to the main board using radio frequency coaxial line, then the connection is established, but the quantity of coaxial lines increases and occupies more space
Solution Approach 1:
The patent combines multiple coaxial lines into a bundled arrangement where they are grouped and routed together through the screen assembly and middle frame. This merging reduces the overall space occupied compared to having separate,分散ed routing paths for each line, while maintaining individual connection integrity to respective antenna feed points.
3Reliability
If antenna springs are added to ensure reliable contact, then the contact reliability is improved, but the quantity of springs increases and may reduce contact reliability
Solution Approach 1:
The patent introduces the middle frame as an intermediary component that provides a stable mounting platform for antenna feed points and serves as a structural mediator between the screen assembly and main board. This intermediary structure reduces the reliance on multiple antenna springs by providing rigid mechanical support and precise positioning, thereby maintaining contact reliability with fewer spring components.
Data Source
AI summary
The present application relates to a terminal, including: a main board, a middle frame, a radio frequency circuit layer, a screen, and a plurality of antennas, where the middle frame is located between the main board and the radio frequency circuit layer, the radio frequency circuit layer is located between the screen and the middle frame, and the plurality of antennas are connected to the main board by using radio frequency lines in the radio frequency circuit layer.