Phased Array Register-Bank Control for Fast Beam Switching
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Solution Overview
Problem
Existing phased array systems face challenges in efficiently controlling the directivity and power consumption of beam-formed signals, particularly in rapidly switching between different beam patterns and orientations.
Innovation Solution
The implementation of a phased array control circuit with a register bank system that includes addressable and programmable register sets and fast beam switching circuitry, allowing for rapid switching between different beam configurations and power control parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If traditional phased array control methods are used, then beam forming capability is achieved, but switching speed between different beam patterns is slow
Solution Approach 1:
The control circuit is segmented into multiple independent register banks, where each register bank stores a complete set of beam forming parameters for a specific beam pattern. This segmentation allows the system to switch between beams by simply changing the selected register bank, dramatically improving switching speed while keeping each individual register bank relatively simple in structure.
Solution Approach 2:
All beam forming parameters for different beam patterns are pre-configured and stored in the respective register banks before operation. When beam switching is required, the system only needs to retrieve the pre-stored parameters from the selected register bank, eliminating the need for real-time calculation and significantly accelerating the beam switching process.
2Adaptability or versatility
If multiple beam patterns are supported, then system versatility is improved, but power consumption increases
Solution Approach 1:
The system dynamically activates only the register bank corresponding to the currently required beam pattern, while other register banks remain in a low-power standby state. This dynamic selection mechanism allows the system to support multiple beam patterns for versatility while minimizing power consumption by keeping inactive beam configuration circuits dormant.
Solution Approach 2:
Different register banks are independently controllable, allowing the system to apply power management locally to specific beam pattern configurations. Only the locally selected register bank consumes full power for active beam forming, while other local register banks operate in low-power mode, achieving a balance between versatility and energy efficiency.
Data Source
AI summary
Register banks are used to allow for fast beam switching in a phased array system. Each beam forming channel is associated with a register bank containing M register sets for configuring such things as gain/amplitude and phase parameters of the beam forming channel. The register banks for all beam forming channels can be pre-programmed and then fast beam switching circuitry allows all beam forming channels across the array to be switched to use the same register set from its corresponding register bank at substantially the same time, thereby allowing the phased array system to be quickly switched between various beam patterns and orientations. Active power control circuitry may be used to control the amount of electrical power provided to or consumed by one or more individual beam forming channels such as to reduce DC power consumption of the array and/or to selectively change the effective directivity of the array.