Single Patch Antenna Pattern Diversity via Dual Feed Points
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Solution Overview
Problem
Conventional antenna devices requiring multiple radiators to achieve pattern diversity occupy more space and complicate design, especially in portable electronic devices, where ultra-high speed and voluminous data transmission is needed.
Innovation Solution
An antenna device with a single radiation patch and two feed points, where out-of-phase and in-phase feeding are used to form broadside and endfire radiation patterns respectively, allowing for pattern diversity without increasing installation space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple radiators are used to implement pattern diversity function, then different radiation patterns (broadside and endfire) can be obtained, but the space required and substrate thickness increase
Solution Approach 1:
The patent combines multiple radiator functions into a single radiation patch by using multiple feed points. The single radiation patch is configured to support both broadside and endfire radiation patterns through different feeding configurations, thereby merging what would traditionally require separate radiators into one integrated structure.
Solution Approach 2:
The single radiation patch is designed to perform multiple functions by supporting different radiation patterns through different feed point configurations. The same radiation patch can generate broadside patterns when fed from one configuration and endfire patterns when fed from another configuration, making it a universal element that replaces multiple specialized radiators.
2Adaptability or versatility
If multiple different radiators are used to achieve pattern diversity, then broadside and endfire patterns can be implemented, but the design complexity increases due to fine tuning requirements
Solution Approach 1:
The patent merges multiple radiator designs into a single unified radiation patch structure. Instead of designing and tuning separate broadside and endfire radiators, the invention uses one radiation patch with multiple feed points, where the same physical structure produces different patterns based on feeding configuration, thereby reducing design complexity.
Solution Approach 2:
The invention changes the feeding parameters (phase and amplitude distribution at different feed points) rather than changing the physical radiator structure. By adjusting the feeding configuration of the same radiation patch, different radiation patterns are achieved, avoiding the complexity of designing and tuning multiple different radiator structures.
3Speed
If wired transmission lines are expanded to increase transmission speed and capacity, then ultra-high speed data transmission can be achieved, but the number of signal lines increases and space requirements are not met
Solution Approach 1:
The patent replaces wired transmission lines with a wireless transmission system using MIMO antenna technology. Instead of physically expanding wired connections which requires more signal lines and space, the invention uses electromagnetic wave transmission through multiple antenna elements, achieving high-speed data transmission without increasing the physical number of connection lines.
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
Enables efficient implementation of ultra-high speed and voluminous data transmission in small spaces by steering radiation patterns with a single radiator, facilitating easy design and installation in electronic devices.
Implementation Method 1
out-of-phase feeding is provided to the first feed point and the second feed point to form a broadside radiation pattern, and in-phase feeding is provided to the first feed point and the second feed point to form an endfire radiation pattern
Data Source
AI summary
An antenna device and an electronic device including the antenna device are provided. The antenna device includes a radiation patch in a shape of a flat plate, a first feed point configured in a side region of the radiation patch, and a second feed point configured in another side region of the radiation patch. The first feed point and the second feed point are a same distance from a virtual ground plane formed on the radiation patch, out-of-phase feeding is provided to the first feed point and the second feed point to form a broadside radiation pattern, and in-phase feeding is provided to the first feed point and the second feed point to form an endfire radiation pattern.