Antenna Structure All-Metal Housing Segmented Backboard
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Metallic housings in wireless communication devices often shield antenna signals, degrading device performance and compromising the structural integrity and aesthetic quality due to slots or gaps in the backboard.
Innovation Solution
An antenna structure with a housing that includes a front frame, backboard, and side frame forming an all-metal structure without additional slots or gaps, utilizing a radiating portion and coupling portion defined by specific gaps and grooves, and employing a feed source and radiator configuration to optimize signal transmission across multiple frequency bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If slots or gaps are defined in the metallic backboard for antenna signal transmission, then antenna signal transmission is enabled, but structural integrity and aesthetic quality are compromised
Solution Approach 1:
The backboard is segmented into multiple regions: a first region with slots for antenna signal transmission and a second region without slots for maintaining structural integrity and aesthetic quality. This segmentation allows different portions of the backboard to serve different functions simultaneously, resolving the contradiction between signal transmission and structural integrity.
2Reliability
If slots or gaps are defined in the metallic backboard for antenna signal transmission, then antenna signal transmission is enabled, but aesthetic quality is compromised
Solution Approach 1:
Different regions of the backboard are assigned different local qualities: the first region has slots to enable antenna signal transmission, while the second region maintains a continuous metallic surface for aesthetic quality. This local differentiation allows the backboard to simultaneously satisfy functional and aesthetic requirements.
3Shape
If antenna is located in the metal housing, then device structure is simplified and aesthetic quality is improved, but antenna signals are shielded and device performance degrades
Solution Approach 1:
The metal housing is segmented into regions with different electromagnetic properties. The backboard includes a first region with slots for signal transmission and a second region without slots for maintaining aesthetic quality. This segmentation allows the housing to simultaneously provide aesthetic appearance and functional signal transmission.
Solution Approach 2:
The slot structure in the backboard acts as an intermediary element that allows antenna signals to pass through the metal housing. The slots provide a controlled pathway for electromagnetic waves, enabling signal transmission while maintaining the overall metal housing structure for aesthetic purposes.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The antenna structure enhances signal transmission across LTE-A frequency bands, maintaining structural integrity and aesthetic quality by eliminating slots and gaps in the backboard, enabling simultaneous reception and transmission of wireless signals at multiple frequency bands.
Implementation Method 1
A radiating portion and a coupling portion are divided from the housing by the slot, the first gap, the second gap, and the groove... The second feed source is electrically connected to the radiator and a current from the second feed source is coupled to the coupling portion through the radiator
Data Source
Figure 1
Figure 2
Figure 3
AI summary
An antenna structure includes a housing, a first feed source, a ground portion, a radiator, and a second feed source. The housing includes a front frame, a backboard, and a side frame. The side frame defines a slot. The front frame defines a first gap, a second gap, and a groove. A radiating portion and a coupling portion are divided from the housing by the slot, the first gap, the second gap, and the groove. The first feed source is electrically connected to the radiating portion. One end of the ground portion is electrically connected to the radiating portion and another end of the ground portion is grounded. The radiator is coupled with and apart from the coupling portion. The second feed source is electrically connected to the radiator and a current from the second feed source is coupled to the coupling portion through the radiator.