UWB Patch Antenna With L-Shaped Feeds for Direction Finding
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Solution Overview
Problem
Existing UWB antennas are limited by size constraints, making it difficult to miniaturize electronic devices while maintaining effective direction finding capabilities.
Innovation Solution
An antenna design featuring a first radiator with a patch shape, multiple L-shaped microstrip feed structures, and ports that output sum and difference patterns to detect the direction of a mono pulse, utilizing a single radiator instead of an array antenna.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a traditional array antenna is used for UWB direction finding, then direction finding capability is achieved, but antenna size becomes large
Solution Approach 1:
The patent combines multiple feed structures (first feed structure and second feed structure) with a single patch radiator to achieve direction finding functionality. The first feed structure excites the radiator for sum pattern generation, while the second feed structure excites it for difference pattern generation, eliminating the need for separate antenna elements and reducing overall antenna size.
Solution Approach 2:
The single patch radiator serves multiple functions by being fed through different feed structures. It can generate both sum pattern and difference pattern radiation characteristics, enabling the antenna to perform direction finding operations that traditionally required multiple antenna elements, thus achieving multi-functionality with a single radiator.
2Area of stationary object
If antenna size is reduced for device miniaturization, then ease of device integration is improved, but direction finding performance deteriorates
Solution Approach 1:
The patent employs L-shaped microstrip feed structures with specific geometric configurations to create localized electromagnetic field distributions that generate distinct sum and difference patterns. The L-shape geometry with specific arm lengths and orientations enables the small antenna to produce directional radiation patterns necessary for accurate direction finding despite the reduced overall size.
Solution Approach 2:
The patent optimizes the geometric parameters of the L-shaped feed structures (arm lengths, widths, and orientations) to achieve the desired radiation patterns. By carefully adjusting these parameters, the antenna maintains direction finding accuracy while minimizing the physical size of the antenna structure.
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 design achieves miniaturization of the antenna while maintaining wideband characteristics and enabling accurate direction finding, suitable for UWB applications.
Implementation Method 1
each of the plurality of feed structures includes an L-shaped microstrip line
Implementation Method 2
the first radiator is configured to output a sum pattern and a difference pattern through each of the plurality of ports
Data Source
AI summary
Provided is an antenna and an electronic device including the antenna. The antenna according to an embodiment of the disclosure includes: a first radiator having a patch shape; a plurality of feed structures configured to feed the first radiator; and a plurality of ports connected to the plurality of feed structures, respectively, wherein each of the plurality of feed structures includes an L-shaped microstrip line.