Antenna Cover With Through Holes For Pattern Modification
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Solution Overview
Problem
Block array radar antennas installed on vehicles near the ground suffer from a large field of view, leading to increased energy reception of unwanted signals from the ground and vehicle, necessitating additional patch antennas to adjust the radiation pattern, which complicates design and increases bulkiness.
Innovation Solution
An antenna cover with a housing featuring through holes of varying sizes and positions, adjusting the dielectric constant distribution to modify the antenna radiation pattern, focusing energy without the need for additional antennas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If additional patch antennas are used to concentrate the radiation pattern, then the antenna pattern can be adjusted to reduce unwanted signal reception, but the device becomes bulkier and the design becomes more complicated
Solution Approach 1:
The patent combines the antenna cover with the antenna assembly, integrating the radiation pattern adjustment function into the cover structure itself. The through-holes in the antenna cover modify the radiation pattern directly, eliminating the need for separate additional patch antennas and simplifying the overall design while still achieving the goal of reducing unwanted signal reception.
2Object-affected harmful factors
If additional patch antennas are used to concentrate the radiation pattern, then the antenna pattern can be adjusted to reduce unwanted signal reception, but the device becomes bulkier
Solution Approach 1:
The antenna cover is integrated as part of the antenna assembly, combining multiple functions into a single component. The cover with its specific through-hole pattern performs both protective covering and radiation pattern adjustment functions, eliminating the need for additional separate antennas and reducing the overall radar volume.
3Adaptability or versatility
If the field of view of the block array antenna is relatively large, then the antenna can detect obstacles in a wider range, but the energy received includes unwanted signals reflected by ground or the vehicle itself
Solution Approach 1:
The antenna cover features through-holes with specific sizes and distributions that create localized modifications to the radiation pattern. This allows the antenna to maintain its wide field of view for obstacle detection while selectively controlling the radiation in specific directions to reduce unwanted signal reception from ground and vehicle reflections.
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 antenna cover effectively adjusts the radiation pattern to reduce unwanted signal reception, enhancing focusing and reducing the need for additional antennas, thereby simplifying design and reducing bulkiness.
Implementation Method 1
adjusting the dielectric constant distribution to modify the antenna radiation pattern
Data Source
AI summary
An antenna cover is used with an antenna for passing therethrough a radiation of the antenna in order to modify an antenna pattern of the antenna. The antenna cover includes a housing having a first surface and a second surface; and a plurality of through holes penetrating through the housing and extending from the first surface to the second surface. By way of adjusting distances between the plurality of through holes and/or adjusting sizes of the plurality of through holes, the antenna cover functions to adjust the radiation of the antenna from a first antenna pattern to a second antenna pattern.