Antenna Module Support Coupler for Fixed Distance
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Solution Overview
Problem
Existing electronic devices face challenges in maintaining a consistent distance between the antenna module and the back cover, which affects radiation performance, especially at high frequencies, due to issues with adhesion and heat-related movement of fixing structures.
Innovation Solution
The electronic device incorporates a housing design with a side housing and inner plate structure that includes conductive patterns and support couplers to securely position the antenna substrate, ensuring a fixed distance and preventing movement, thereby enhancing radiation performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the antenna module is fixed using tape or bonding, then the antenna module can be secured to the housing, but the adhesion decreases over time or the bonding melts due to heat, causing the antenna module to move and affecting radiation performance
Solution Approach 1:
The fixing structure is divided into multiple independent support couplers distributed around the antenna module's perimeter. Each support coupler independently maintains the distance between the antenna module and back cover, so that even if one coupling point experiences adhesion degradation or thermal expansion, the other support couplers continue to maintain proper positioning and spacing.
Solution Approach 2:
The support couplers are pre-formed with protrusions that extend into holes of the antenna substrate before assembly. This preliminary configuration ensures that when the antenna module is installed, the coupling members immediately engage with the antenna substrate through these protrusions, establishing stable mechanical connections that prevent movement from the outset rather than relying on adhesives that degrade over time.
2Reliability
If a fixing structure is formed on the front surface of the antenna module, then the antenna module can be secured, but it becomes difficult to secure the distance between the front surface and back surface of the antenna module
Solution Approach 1:
Instead of forming the fixing structure on the front surface of the antenna module, the invention inverts the approach by placing the fixing structure on the back surface. The support couplers are positioned between the antenna module and the back cover, with their protrusions engaging holes in the antenna substrate from the back side. This inversion allows the fixing structure to maintain the distance between front and back surfaces without interfering with the front surface geometry.
Solution Approach 2:
The support couplers act as intermediary elements between the antenna module and the back cover. These couplers include protrusions that extend into holes of the antenna substrate, creating a mechanical mediation that precisely controls the spacing. The intermediary support couplers transfer and distribute the fixing force while maintaining the required distance, eliminating the need for direct surface-mounted fixing structures.
3Reliability
If the antenna module is pressed toward the back cover to improve radiation performance, then the radiation performance improves, but the antenna module may move due to heat generation or adhesion degradation
Solution Approach 1:
The invention changes the physical state and properties of the coupling members to accommodate thermal variations. The coupling members are designed with material properties and structural characteristics that allow them to maintain their coupling function under heat generation and adhesion degradation conditions. By modifying the coupling mechanism's parameters (mechanical engagement geometry, material selection), the system maintains both the pressed position for radiation performance and stability against movement despite thermal and adhesive variations.
Data Source
AI summary
Disclosed is an electronic device. The electronic device includes a housing that includes a first plate facing a first direction, a second plate facing a second direction opposite the first direction, and a side housing surrounding a space between the first plate and the second plate, wherein the second plate includes an outer surface facing the second direction and being substantially flat and an inner surface facing the first direction and being substantially flat, an inner plate interposed between the first plate and the second plate, wherein the inner plate includes a surface facing the inner surface of the second plate and an opening, an antenna structure comprising a substrate including a first surface facing the inner surface of the second plate and a second surface facing away from the inner surface, at least one conductive pattern on the first surface and/or embedded in the substrate, a surrounding portion including a hole penetrating the second surface, the antenna structure being disposed in the opening, and a support coupler including a protrusion extending to an interior of the hole.