Modular Antenna Array Switching Between Phased and Independent Modes
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Solution Overview
Problem
Existing RF communication systems face challenges in achieving high throughput and long range while efficiently managing power and antenna directionality, especially in dynamically changing environments with varying frequency and signal requirements.
Innovation Solution
The use of modular RF devices comprising differential segmented aperture (DSA) tiles and RF units (RFU) that can operate in independent or cooperative modes, allowing for scalable, flexible, and efficient RF signal transmission and reception across multiple bands and frequencies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a single large phased array antenna is used to achieve high throughput and long range, then the RF aperture area increases, but the device complexity and power consumption increase significantly
Solution Approach 1:
The patent divides the large RF aperture into multiple smaller DSA tiles that can be independently operated or coherently combined. Each tile contains a manageable number of RF pixels and associated electronics, reducing the complexity of individual units while achieving large aperture area through modular assembly. The system can dynamically configure subsets of tiles to operate independently or together based on operational requirements.
Solution Approach 2:
The system implements dynamic reconfiguration capability where DSA tiles can be switched between independent operation mode and coherent phased array mode. The RF pixels within each tile can be selectively activated or deactivated based on signal requirements, allowing the aperture area and complexity to be dynamically adjusted rather than fixed at maximum size.
2Speed
If a large phased array is used to achieve narrow beam and high gain, then the directional control improves, but the power consumption increases
Solution Approach 1:
The system dynamically adjusts the operational state of individual DSA tiles and RF pixels based on real-time signal requirements. When narrow beam and high gain are needed, only the necessary subset of tiles is activated in coherent mode, rather than operating all tiles at full power. This dynamic power management allows fast beam steering while consuming only the power necessary for the current operational requirement.
Solution Approach 2:
The patent implements partial activation of RF pixels and DSA tiles, using only the portion of the aperture necessary to achieve the desired beam characteristics. Instead of always operating at full aperture capacity, the system activates minimal necessary elements to achieve the required gain and directional control, reducing overall power consumption while maintaining beam steering capability.
3Power
If the RF system is designed for high-power transmission, then the transmit power increases, but the antenna size and device complexity increase
Solution Approach 1:
The patent segments the high-power transmission capability across multiple DSA tiles, each contributing a portion of the total power. Individual tiles can operate at lower power levels independently, or combine coherently to achieve high total transmit power. This segmentation allows high power output without requiring a single large antenna element, as the distributed array achieves the same effect through constructive interference.
Solution Approach 2:
Multiple DSA tiles are merged to operate in coherent phased array mode, combining their individual power outputs constructively to achieve high total transmit power. The coherent combination of signals from multiple smaller aperture elements produces the same field intensity as a single large element would require, achieving high power transmission with reduced individual antenna size.
4Adaptability or versatility
If the system supports multiple frequency bands and signal interactions, then the adaptability improves, but the device complexity increases
Solution Approach 1:
Each DSA tile is designed with universal RF pixels that can operate across multiple frequency bands. The same physical hardware structure supports different frequency operations without requiring separate dedicated antennas for each band. This multi-functionality at the tile level enables the entire system to adapt to various frequency requirements while avoiding the complexity of having separate systems for each band.
Solution Approach 2:
The system dynamically reconfigures the operational parameters of DSA tiles and RF pixels to match the required frequency band and signal characteristics. Rather than having fixed hardware configurations for different bands, the system adapts its operation in real-time, selecting and configuring appropriate tiles and pixels based on the current communication requirements, thereby achieving versatility without proportional complexity increase.
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.