External Antenna Integration in Charging Cradle
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Solution Overview
Problem
Existing radio devices with built-in antennas face performance deterioration due to reduced dimensions, necessitating the use of external antennas for improved communication, especially in poor radio wave environments, but current configurations are complex and costly with multiple components.
Innovation Solution
A radio device with a simple configuration using a conductor plate and linear conductors arranged in a specific geometry to connect an external antenna, reducing the number of components needed for connection and enhancing high-frequency characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an external antenna is used to improve communication performance, then antenna performance is improved, but device complexity increases due to multiple components (switch, transmission line, connector)
Solution Approach 1:
The patent combines the external antenna structure with the charging cradle into a single integrated unit. The cradle serves dual functions: charging the mobile device and providing external antenna functionality for improved communication performance, thereby eliminating the need for separate switching mechanisms and reducing overall system complexity.
Solution Approach 2:
The charging cradle is designed to perform multiple functions simultaneously: it charges the mobile radio device while also serving as an external antenna for enhanced communication. This multi-functionality eliminates the need for separate components and switching mechanisms, directly addressing the complexity issue.
2Reliability
If an external antenna is used to improve communication performance, then antenna performance is improved, but manufacturing cost increases due to expensive high-frequency components
Solution Approach 1:
The charging cradle is designed to perform multiple functions simultaneously: it charges the mobile radio device while also serving as an external antenna for enhanced communication. This multi-functionality eliminates the need for separate components and switching mechanisms, directly addressing the complexity issue.
Solution Approach 2:
The cradle structure itself serves as the antenna, utilizing its own physical structure rather than requiring separate expensive high-frequency components. The conductor plate and housing of the cradle are configured to function as radiating elements, making the system self-sufficient and reducing component costs.
3Volume of moving object
If antenna elements are shortened to fit within housing dimensions, then device size is reduced, but antenna performance deteriorates
Solution Approach 1:
The patent extends the antenna structure into a third dimension by using the vertical profile of the cradle housing. The conductor plate and housing elements are configured to create effective radiating structures that achieve full wavelength dimensions through spatial arrangement rather than linear extension, maintaining performance while keeping the mobile device compact.
Data Source
AI summary
In order to implement an external antenna of a radio device with a simple configuration, an antenna according to the present invention includes: a conductor plate; a first linear conductor including a portion disposed substantially in parallel to an edge of the conductor plate, and being curved halfway and connected to the conductor plate with a gap being interposed; a second linear conductor intersecting with a line extending from an end of the first linear conductor opposite to a connection end thereof connected to the conductor plate, and being connected to the conductor plate; a third linear conductor being connected to an end of the second linear conductor opposite to an end thereof connected to the conductor plate, and being disposed substantially in parallel to the first linear conductor; and a fourth linear conductor being disposed in a direction apart from the conductor plate at an end of the third linear conductor opposite to an end thereof connected to the second linear conductor.