Antenna Array Switching for Spatial Resolution and Bandwidth Trade-offs
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Solution Overview
Problem
Antenna arrays for transmitting and receiving electromagnetic signals have limited bandwidth and flexibility due to small bandwidth in individual transmission/reception paths, leading to reduced system flexibility.
Innovation Solution
A device comprising an antenna array, a combiner/splitter unit, and a signal processing unit with switching units that allow switching between broadband mode for high bandwidth and spatial resolution mode, enabling flexible operation by routing signals through different paths and processing units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If antenna arrays use individual transmission/reception paths for each antenna element, then spatial resolution is achieved, but bandwidth is limited
Solution Approach 1:
The patent implements dynamic switching between two operational modes: spatial resolution mode (individual transmission/reception paths) and broadband mode (combined paths). The switching unit allows the system to adapt its configuration based on operational requirements, transitioning between narrowband high-resolution operation and broadband operation as needed.
Solution Approach 2:
The antenna array system is designed to perform multiple functions through a single configuration: it can operate in spatial resolution mode for applications requiring directional precision, and in broadband mode for applications requiring wide frequency coverage. The combiner/splitter unit and switching mechanism enable the same hardware to serve dual purposes.
2Adaptability or versatility
If antenna arrays combine all antenna element paths, then bandwidth is increased, but spatial resolution is lost
Solution Approach 1:
The system dynamically reconfigures its signal paths using switching units. When broadband operation is required, the switching unit connects all antenna elements to the combiner/splitter unit, combining their paths to increase bandwidth. When spatial resolution is needed, the switching unit reconfigures to provide individual paths for each antenna element.
Solution Approach 2:
The signal processing architecture is segmented into separate functional units: antenna elements, switching units, combiner/splitter unit, and signal processing unit. This segmentation allows flexible reconfiguration of signal paths by the switching units, enabling the system to choose between combined paths (for bandwidth) and individual paths (for spatial resolution).
3Adaptability or versatility
If a switching mechanism is added to enable mode switching, then flexibility is improved, but device complexity increases
Solution Approach 1:
The switching unit acts as an intermediary component between the antenna elements and the combiner/splitter unit. This mediator enables flexible reconfiguration of signal paths without requiring complex changes to the core signal processing architecture. The switching unit manages the complexity by providing a standardized interface for mode transitions.
4Measurement precision
If individual signal processing is performed for each antenna element, then spatial resolution is maintained, but processing complexity increases
Solution Approach 1:
The signal processing architecture is divided into separate processing paths for each antenna element, with each path having its own signal processing unit. This segmentation enables independent processing of signals from different antenna elements, which is essential for maintaining spatial resolution while allowing flexible reconfiguration through the switching units.
Data Source
AI summary
A device for transmitting and/or receiving electromagnetic signals includes an antenna array, a combiner/splitter unit, a signal processing unit, and a switch. The antenna array includes a plurality of N antenna elements adapted to transmit and/or receive electromagnetic signals. The signal processing unit comprises at least one analog-to-digital converter and/or digital-to-analog converter for each of the antenna elements of the antenna array. The switching unit is adapted to switch between a broadband mode and a spatial resolution mode.