Antenna Structure Flexible Board Routing
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Solution Overview
Problem
Conventional antenna designs in electronic devices, such as laptops, face space constraints and signal degradation due to the use of coaxial cables, which limit routing options and increase transmission loss as cable length increases.
Innovation Solution
An antenna structure comprising an antenna radiator, microstrip line, and flexible board with a coaxial cable, where the flexible board is extended through the display area to reduce cable length and route the coaxial cable in the peripheral area, utilizing Liquid Crystalline Polyester materials for minimal dielectric loss and thermal expansion, integrated with a printed circuit board for efficient signal transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If coaxial cables are used to connect antenna to modules, then signal transmission is achieved, but cable length increases causing high frequency signals to decrease
Solution Approach 1:
The patent transitions from traditional rigid coaxial cable routing to a flexible printed circuit board (FPCB) that can be routed through the display area in a different spatial dimension. This allows the signal transmission path to follow the display panel's surface rather than extending cables through the device's thickness, effectively reducing cable length while maintaining signal integrity
2Ease of manufacture
If coaxial cables are routed behind the panel, then connection to motherboard is achieved, but water ripples or fragments are generated on the panel
Solution Approach 1:
The patent merges the antenna signal transmission function with the display panel structure by integrating the flexible printed circuit board directly into the display area. This consolidation eliminates the need for separate cable routing behind the panel, avoiding panel deformation while maintaining manufacturing feasibility
Solution Approach 2:
The patent replaces the mechanical coaxial cable system with an integrated flexible printed circuit board that is structurally bonded to the display panel. This substitution eliminates the mechanical stress and deformation issues associated with routing separate cables behind the panel
3Volume of moving object
If antenna design space is compressed at top side of laptop, then device thickness is reduced, but cables cannot be routed behind panel
Solution Approach 1:
The patent resolves the routing constraint by utilizing the display panel surface as an alternative pathway dimension. Instead of being limited to routing behind the panel, the flexible circuit board can extend through the display area, providing routing flexibility without requiring additional device thickness
Data Source
AI summary
An antenna structure includes an antenna radiator, a microstrip line, a flexible board, and a coaxial cable. The antenna radiator is used to receive and transmit wireless signals. The wireless signals include radio frequency signals. The microstrip line is coupled to the antenna radiator and is used to transmit the radio frequency signals. The flexible board is coupled to the microstrip line and is used to transmit the radio frequency signals. The coaxial cable is coupled to the flexible board and is used to transmit the radio frequency signals to a processor.