3D Spiral Antenna Signal Isolation via Dimensionality Change
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Solution Overview
Problem
Current two-dimensional antennas face challenges in achieving full duplex operation and multiple input/multiple output functionality due to the inability to effectively isolate received RF signals from transmitted RF signals, which is crucial for efficient wireless communication.
Innovation Solution
The implementation of a three-dimensional spiral antenna structure with a receive-transmit isolation module and a tuning module, which includes a duplexer and a balance network, to isolate and match impedance, ensuring efficient signal isolation and transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a two-dimensional antenna structure is used, then the device complexity is reduced, but the signal isolation between receive and transmit paths deteriorates
Solution Approach 1:
The patent transitions from a two-dimensional planar antenna structure to a three-dimensional spiral antenna structure. This dimensional change enables the antenna to achieve full duplex operation and multiple input/multiple output capabilities by creating spatial separation between receive and transmit signal paths, thereby improving signal isolation without significantly increasing overall device complexity.
2Reliability
If a three-dimensional spiral antenna structure is implemented, then signal isolation is improved, but the device complexity increases
Solution Approach 1:
The three-dimensional spiral antenna is segmented into multiple functional components including a duplexer and a balance network. The duplexer separates receive and transmit paths, while the balance network provides impedance matching. This segmentation allows the complex three-dimensional structure to achieve superior signal isolation (approximately 5 dB improvement) while managing the complexity through modular functional decomposition.
3Productivity
If full duplex operation is achieved, then the productivity of wireless communication is improved, but the device complexity increases due to additional isolation requirements
Solution Approach 1:
The three-dimensional spiral antenna structure serves multiple functions simultaneously: it provides both receive and transmit capabilities, incorporates full duplex operation, and enables multiple input/multiple output functionality. The integrated design achieves these multiple functions within a unified antenna structure, improving communication productivity while avoiding the need for separate isolated systems for each function.
Data Source
AI summary
A three-dimensional spiral antenna includes a substrate, a spiral antenna element, and a feed point. The substrate includes a three-dimensional shaped region. The spiral antenna element is supported by and conforms to the three-dimensional shaped region such that the spiral antenna element has an overall shape approximating a three-dimensional shape. The feed point is coupled to a connection point of the spiral antenna element.