Ceiling Antenna Miniaturization via Multi-Layer Non-Coplanar Design
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing indoor coverage ceiling antennas are either large in diameter and small in height or vice versa, making it difficult to reduce both dimensions simultaneously to meet the increasing bandwidth requirements of 4G and 5G communication systems and expanding Wi-Fi coverage without increasing size.
Innovation Solution
A ceiling antenna design featuring a conical upper and lower antenna element, a ring-shaped support member, and a spiral tail with a notch, which allows for miniaturization while maintaining expanded bandwidth coverage by utilizing a multi-layer no-coplanar structure and terminal capacity loading, allowing for reduced height and diameter without compromising performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional uniform ceiling antenna design is used, then frequency band coverage can be achieved, but the antenna size (height and diameter) becomes relatively large
Solution Approach 1:
The patent transitions from a conventional planar antenna structure to a three-dimensional multi-layer non-coplanar configuration. The antenna elements are arranged across multiple layers in space, utilizing vertical and horizontal dimensions simultaneously. This spatial dimensionality change allows the antenna to achieve broader frequency band coverage (698-2700 MHz) while reducing the overall footprint and height of the ceiling-mounted antenna.
Solution Approach 2:
The patent employs a nested structural arrangement where antenna elements are integrated within a compact multi-layer framework. The feed network and radiating elements are nested within each other in a space-efficient manner, allowing multiple functional components to occupy overlapping spatial volumes. This nesting approach enables broad bandwidth coverage without proportionally increasing the antenna's external dimensions.
2Adaptability or versatility
If antenna bandwidth is expanded to meet 4G and 5G requirements, then communication capability is improved, but antenna dimensions increase
Solution Approach 1:
The patent divides the antenna system into multiple discrete radiating elements arranged in a multi-layer configuration. Each element can be independently designed and positioned to contribute to different frequency bands. The feed network is also segmented into multiple feed points that can be independently controlled. This segmentation allows the antenna to achieve expanded bandwidth (698-2700 MHz) for 4G and 5G applications while keeping each individual element and the overall structure compact.
Solution Approach 2:
The patent utilizes a three-dimensional multi-layer non-coplanar arrangement of antenna elements to achieve broad bandwidth coverage. By distributing elements across multiple layers in the vertical dimension and positioning them at different horizontal locations, the antenna achieves frequency diversity and bandwidth expansion without requiring proportional increases in any single linear dimension. The overall antenna dimensions are constrained while maintaining the electrical length required for wideband operation.
Data Source
AI summary
A ceiling antenna includes a first antenna element, a second antenna element, a base plate, a spiral tail and a feeder. The second antenna element is fixedly connected to the first antenna element. The second antenna element is fixed to the base plate. The spiral tail is disposed around the edge of the second antenna element and provided with a notch. The feeder is connected to the first antenna element and the second antenna element, and feeds the first antenna element and the second antenna element.