Transmitarray Antenna Mixed Unit Cell Arrangement
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Solution Overview
Problem
Conventional transmitarray antennas suffer from performance degradation and increased size due to the inefficiencies caused by varying incidence angles of feed radio waves, leading to reduced transmission efficiency.
Innovation Solution
Designing a transmitarray antenna with a mixed arrangement of transmitting surface unit cells having different surface structures and longitudinal lengths, based on the mode and incidence angle of radio waves, to optimize the phase of the transmission coefficient and improve radiation efficiency while reducing the overall size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the distance between the transmitting surface and feed antenna is reduced, then the overall size of the antenna is reduced, but the incidence angle of feed radio waves increases causing performance degradation
Solution Approach 1:
The patent applies local quality by dividing the transmitting surface into multiple regions and arranging different types of unit cells (first type and second type) in different regions. Each unit cell type has different characteristics optimized for specific incidence angles. The first type unit cells are arranged in a first region while second type unit cells are arranged in a second region, allowing each region to handle radio waves with different incidence angles effectively, thus maintaining transmission efficiency while reducing overall antenna size.
2Reliability
If different types of unit cells are arranged in different regions, then the transmission efficiency is improved, but the device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the transmitting surface into multiple discrete regions and populating each region with specific types of unit cells. The transmitting surface is segmented into a first region with first type unit cells and a second region with second type unit cells. This segmentation allows independent optimization of each region for different incidence angle ranges, improving overall transmission efficiency while maintaining manageable complexity through systematic regional division.
Data Source
AI summary
The present disclosure relates to a technology for designing a transmitarray antenna based on the mode and incidence angle of feed radio waves. The transmitarray antenna according to one embodiment of the present disclosure includes a plurality of transmitting surface unit cells having different surface structures and different longitudinal lengths located in a plurality of regions, wherein the transmitting surface unit cells are arranged in a mixed manner in the regions based on the different longitudinal lengths and the phase of a transmission coefficient determined based on an input phase and an output phase based on the mode and incidence angle of radio waves transmitted from a feed antenna.