Slot Antenna Top Plate for Radiation Pattern Shaping
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Solution Overview
Problem
Existing antenna designs struggle to customize the radiation pattern of radio frequency (RF) signals effectively for specific applications, limiting their adaptability and performance.
Innovation Solution
The antenna assembly incorporates a conductive top plate with a plurality of slots and receptacles that include channels and ridges, allowing for the modification of the radiation pattern by adjusting the height, width, spacing, and number of ridges in the receptacles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing antenna designs are used, then the antenna can transmit and receive RF signals, but the radiation pattern cannot be customized for specific applications
Solution Approach 1:
The antenna aperture is segmented into multiple slots arranged in a grid pattern, with each slot acting as an independent radiating element. The aperture is further divided into regions with different impedance characteristics, allowing independent control of radiation patterns in different spatial zones. This segmentation enables customized radiation patterns while maintaining a relatively simple overall structure.
Solution Approach 2:
Different regions of the antenna aperture are assigned different local properties through varying slot impedances and dimensions. By controlling the impedance of individual slots or groups of slots, the radiation pattern can be customized for specific applications without redesigning the entire antenna structure. This local quality approach allows flexible pattern control while keeping the base design simple.
2Adaptability or versatility
If the antenna structure is modified to customize radiation pattern, then adaptability improves, but manufacturing complexity increases
Solution Approach 1:
The radiation pattern is customized by changing parameters of existing slot elements rather than creating entirely new structures. By adjusting slot dimensions, spacing, and impedance values, different radiation patterns can be achieved using the same manufacturing process. This approach maintains ease of manufacture while enabling pattern customization through parameter variation.
Solution Approach 2:
The antenna design uses a universal slot structure that can serve multiple functions by varying its parameters. The same slot geometry and arrangement can produce different radiation patterns depending on the impedance and dimensional parameters, allowing a single manufacturing process to produce antennas optimized for different applications without requiring complex tooling changes.
3Reliability
If radiation pattern is customized for specific applications, then performance for those applications improves, but the antenna loses general applicability
Solution Approach 1:
The antenna incorporates adjustable and reconfigurable elements that allow the radiation pattern to be dynamically changed between different applications. Switches, variable impedance elements, or mechanically adjustable components enable the antenna to transition between different radiation patterns, maintaining both application-specific performance and multi-application capability.
Solution Approach 2:
By making the antenna parameters (slot dimensions, impedance, spacing) variable rather than fixed, the antenna can be optimized for specific applications when needed while retaining the ability to reconfigure for other applications. This parameter variability allows the antenna to achieve high performance for particular uses without permanently sacrificing adaptability to other scenarios.
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 enables the customization of the radiation pattern to achieve desired widths and total gains, enhancing the antenna's adaptability for various applications while maintaining efficient RF signal transmission and reception.
Implementation Method 1
a waveguide plate over the circuit board, the waveguide plate including a waveguide configured to guide the RF signal
Implementation Method 2
a plurality of slots aligned with the waveguide and extending through the conductive top plate
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
An antenna assembly including: a circuit board with an integrated circuit configured to process a radio frequency (RF) signal, and a conductive trace extending from the integrated circuit; a waveguide plate over the circuit board, the waveguide plate including a waveguide configured to guide the RF signal at least one of to and from the conductive trace; and a conductive top plate over the waveguide plate. The conductive top plate includes: an outer surface and an inner surface facing the waveguide plate, the outer surface is opposite to the inner surface; a plurality of slots aligned with the waveguide and extending through the conductive top plate; and a receptacle recessed below the outer surface beside the plurality of slots, the receptacle configured to modify a radiation pattern of the RF signal passing across the receptacle from the plurality of slots.