Shared Antenna Array for Compact Radar Spatial Optimization
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Solution Overview
Problem
Miniaturized radar devices face challenges in accurately detecting targets due to space limitations, making it difficult to increase the number of antennas, and there is a need for efficient antenna arrangement and cost-effective manufacturing solutions.
Innovation Solution
An antenna array configuration that includes at least one first antenna, one second antenna, and a shared antenna, with a connector that allows signal transmission between them through matched paths, enabling efficient spatial use and reduced manufacturing costs by using a shared antenna structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the number of antennas is increased to improve target detection accuracy, then detection precision is improved, but device complexity and space requirements increase
Solution Approach 1:
The patent combines multiple antenna functions into a shared antenna structure. The shared antenna can be configured to operate with different impedance values to serve multiple antenna roles, reducing the total number of physical antennas needed while maintaining detection accuracy across multiple directions.
Solution Approach 2:
The patent employs switchable impedance networks that can dynamically change the impedance of the shared antenna between different states (e.g., first impedance for first direction detection, second impedance for second direction detection). This dynamic reconfiguration allows a single antenna to perform multiple functions that would traditionally require multiple fixed antennas.
2Measurement precision
If the number of antennas is increased to improve target detection accuracy, then detection precision is improved, but manufacturing cost increases
Solution Approach 1:
The patent merges multiple antenna elements into a single shared antenna structure with switchable impedance. This reduces the number of separate antenna components that need to be manufactured, assembled, and tested, thereby lowering manufacturing costs while maintaining the functional equivalent of multiple antennas for accurate target detection.
Solution Approach 2:
The shared antenna is designed with multi-functionality through impedance switching, allowing it to serve multiple detection directions and purposes. This universal design eliminates the need for multiple specialized antennas, reducing manufacturing complexity and cost while achieving the same detection precision.
3Volume of moving object
If space utilization is optimized by using shared antenna, then device compactness is improved, but signal interference may increase
Solution Approach 1:
The patent uses dynamic impedance switching to control signal paths and isolation between different antenna functions. By switching the shared antenna's impedance state, the system can isolate signals from different directions, preventing interference while maintaining compact space utilization.
Solution Approach 2:
The patent introduces impedance switching networks as intermediary elements between the shared antenna and different signal paths. These intermediaries control signal flow and isolation, preventing harmful interference between different antenna functions while allowing the compact shared antenna structure to operate effectively.
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
This configuration allows for efficient spatial arrangement and cost reduction in radar devices by maximizing space utilization and simplifying manufacturing, while maintaining effective target detection capabilities.
Implementation Method 1
a signal input to one of the first port and the second port is transmitted to the other port through a first path and a second path, and wherein the signal passed through the first path and the second path are matched at the other port
Data Source
AI summary
The present disclosure provides the antenna array and the radar device including at least one first antenna arranged in one direction; at least one second antenna spaced apart from the first antenna; at least one shared antenna arranged between the first antenna and the second antenna; a first input-output terminal connected to the first antenna; a second input-output terminal connected to the second antenna; and a connector including a first port connected to the first antenna, a second port connected to the second antenna, a third port connected to the shared antenna, and a connecting portion connected to the first port, the second port and the third port; wherein a signal input to one of the first port and the second port is transmitted to the other port through a first path and a second path, and wherein the signal passed through the first path and the second path are matched at the other port. According to the present disclosure, it is possible to provide the antenna array and the radar device that can be efficiently disposed in a limited space to maximize spatial advantage.