Integrated Radar Antenna Device for Compact Spatial Resolution
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Solution Overview
Problem
Current radar detectors require multiple antennas to cover a broader monitoring range, leading to a larger and less compact arrangement on a single printed circuit board, which hinders spatial resolution and compactness.
Innovation Solution
The integration of at least two radar antennas with different main radiation directions on a shared circuit board, where one antenna is configured on the front side and another integrated with the substrate on the back side, both supplied by a single feeding point, utilizing patch or dipole antennas and horn antenna structures to achieve a compact and efficient detection system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple independent radar antennas are used to cover a broader monitoring range, then the detection range is improved, but the circuit board size increases
Solution Approach 1:
The patent combines multiple antenna functions into a single integrated antenna structure. The antenna device integrates at least two radiation directions within one antenna unit, eliminating the need for multiple separate antennas and their corresponding feed networks, thus reducing circuit board area while maintaining broad detection coverage
Solution Approach 2:
The single antenna device is designed to perform multiple functions simultaneously - it provides radiation in at least two different directions and covers a broad monitoring range, making one antenna structure serve the role of what would traditionally require multiple separate antennas
2Adaptability or versatility
If multiple radar antennas are arranged on a single circuit board to cover different angular ranges, then the monitoring range is improved, but the device complexity increases
Solution Approach 1:
The patent merges multiple feed networks into a single feed structure. The integrated antenna device uses one feed point to supply electromagnetic energy to multiple radiation directions, eliminating the complexity of multiple independent feed networks and their associated synchronization requirements
Solution Approach 2:
The single feed network is designed to simultaneously supply multiple radiation directions through the integrated antenna structure, making one feed system perform the function of what would traditionally require multiple separate feed networks
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 a compact radar detector with enhanced spatial resolution and broader detection range without increasing the circuit board size, enabling quasi-360° detection while reducing the complexity of the feeder network and space requirements.
Implementation Method 1
an electrically conductive layer is arranged on two opposing sides... At least one main antenna is configured or provided in the electrically conductive layer of a first of the sides
Data Source
AI summary
Antenna device for a radar detector, which has a circuit board having an electrically insulating substrate, on which a respective electrically conductive layer is arranged on each of two opposing sides, wherein the layer of at least one first side is configured as at least one main antenna. According to the invention, in addition to the at least one main antenna in each case, at least one antenna structure is provided which is integrated with the substrate, wherein each antenna structure integrated with the substrate comprises: a plurality of cutouts which are formed in the substrate and arranged in a waveguide and in each of which an electrically conductive material is arranged at least partially, and a feeder cable formed by the electrically conductive layer of one of the sides for feeding an electromagnetic wave into the antenna structure integrated with the substrate.