Antenna Array With Differing Radiation Patterns
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Solution Overview
Problem
Current antenna structures in wireless communication systems face challenges in supporting full duplex operation and multiple input multiple output (MIMO) operations, as they often rely on antennas with the same radiation pattern and bandwidth, which limits diversity and capacity.
Innovation Solution
The use of an antenna array structure comprising antennas of different shapes and radiation patterns, where the first antenna provides a first radiation pattern and frequency bandwidth, and the second antenna provides a second radiation pattern and frequency bandwidth, allowing for overlapping channels of interest and enabling MIMO and diversity operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If antennas with the same radiation pattern and bandwidth are used in MIMO structures, then the device complexity is reduced and manufacturing is simplified, but the diversity and capacity of the antenna array are limited
Solution Approach 1:
The patent applies local quality by assigning different radiation patterns and bandwidth characteristics to different antennas within the array. Specifically, first antennas are configured with a first radiation pattern and frequency bandwidth, while second antennas are configured with a second radiation pattern and frequency bandwidth, allowing each antenna to have specialized local properties that collectively enhance array diversity and capacity
Solution Approach 2:
The patent implements asymmetry by using antennas with different radiation patterns and frequency bandwidths rather than identical symmetric configurations. The first antennas and second antennas have deliberately different electromagnetic characteristics, creating an asymmetric array structure that improves diversity performance while maintaining manageable complexity through systematic design
2Productivity
If traditional antenna structures are used for full duplex operation, then the device complexity is maintained at acceptable levels, but the ability to support concurrent communications is insufficient
Solution Approach 1:
The patent achieves multi-functionality by configuring the antenna array to simultaneously support multiple operations including full duplex communication, MIMO operations, and diversity transmission. The first and second antennas with different radiation patterns and bandwidths enable the system to perform multiple functions concurrently, effectively increasing productivity without proportionally increasing complexity
Data Source
AI summary
An antenna array structure includes a plurality of antennas, wherein a first antenna has a first geometric shape, provides a first radiation pattern, and has a first frequency bandwidth. A second antenna has a second geometric shape to provide a second radiation pattern and has a second frequency bandwidth. The first and second frequency bandwidths at least partially overlap to include channels of interest. An antenna processing circuit sends one or more transmit signals to one or more of the antennas for transmission via one or more of the channels of interest and receives one or more receive signals from the one or more of the antennas or from another one or more of the antennas via the one or more of the channels of interest or from another one or more of the channels of interest.