Scalable Antenna Array with Switchable DSA Tiles for RF Beam Control
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Solution Overview
Problem
Current RF communication systems face challenges in achieving higher throughput and greater ranges while efficiently managing multiple frequencies and signals, as existing solutions either require excessive power or are inflexible in operation.
Innovation Solution
The use of modular RF devices comprising differential segmented aperture (DSA) tiles with 2D arrays of electrically conductive tapered projections, allowing for dynamic switching between independent and cooperative modes to optimize power and bandwidth, enabling scalable and flexible operation across various frequency bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If existing RF systems use high power to achieve higher throughput and greater ranges, then transmission distance and data rate improve, but power consumption increases excessively
Solution Approach 1:
The RF aperture is segmented into multiple independently controllable RF pixels arranged in a 2D array. Each pixel can be individually activated or deactivated, allowing the system to transmit high-power signals through only the necessary subset of pixels rather than requiring all pixels to operate at high power simultaneously. This segmentation enables achieving high throughput and range while reducing overall power consumption.
Solution Approach 2:
The system dynamically reconfigures the RF aperture by selectively activating different combinations of RF pixels based on communication requirements. The RF pixels can be dynamically switched between active and inactive states, and their individual phases and amplitudes can be adjusted in real-time to optimize power efficiency while maintaining required throughput and transmission range.
2Power
If existing RF systems are designed for high-power operation, then transmission capability improves, but flexibility in operating modes deteriorates
Solution Approach 1:
The RF aperture provides dynamic reconfigurability by allowing selective activation of RF pixels and adjustment of their individual phases and amplitudes. This enables the system to switch between different operating modes including high-power transmission through selected pixels, low-power operation using fewer pixels, and various beamforming configurations, thereby achieving both high transmission power capability and operational flexibility.
Solution Approach 2:
The same RF aperture structure serves multiple functions: it can operate in high-power transmission mode, low-power mode, beamforming mode, and distributed MIMO mode. The universal RF pixel design allows the aperture to adapt to different communication requirements without requiring separate hardware configurations, providing both high power capability and versatility.
3Area of stationary object
If RF systems use wide beam operation, then coverage area improves, but power efficiency and focused delivery deteriorate
Solution Approach 1:
The system applies local quality control by selectively activating specific RF pixels and adjusting their individual phases and amplitudes to create focused beams directed at specific targets. Rather than uniformly illuminating a wide area with all pixels operating simultaneously, the system concentrates power locally in desired directions while leaving other areas with reduced or zero power, thereby improving power efficiency while maintaining appropriate coverage.
Solution Approach 2:
The beam direction and coverage area are dynamically adjustable by reconfiguring which RF pixels are active and how their phases and amplitudes are set. The system can switch between wide coverage modes (activating more pixels with broader beam patterns) and focused high-efficiency modes (activating fewer pixels with concentrated beams), allowing dynamic optimization between coverage area and power efficiency based on real-time requirements.
Data Source
AI summary
A modular radio frequency (RF) device includes N base units, each including a differential segmented array (DSA) tile with a support board and a two-dimensional (2D) array of electrically conductive tapered projections disposed on the support board. Neighboring pairs of the electrically conductive tapered projections form RF pixels. The N DSA tiles are arranged to form an RF aperture. The N base units are programmed to switch the RF aperture between a first operating mode and a second operating mode. In the first operating mode, the N base units are operated as at least two independent subsets with each subset operating as an RF transmitter or receiver independently of the other subsets. In the second operating mode all N base units coherently combine as a single phased array RF transmitter or receiver.