Radar System Noise Reduction via Segmented Power Supplies
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Solution Overview
Problem
Radar systems face challenges in integrating high-performance digital components with analog components due to noise interference and heat generation, which are exacerbated by power consumption peaks and limited options for EMI protection and ventilation in compact designs.
Innovation Solution
The radar system separates RF and digital processing activities using distinct power supplies, with a low noise power supply for RF operations and a high efficiency power supply for digital processing, and implements memory power state switching to reduce overall power consumption and heat generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If digital components are integrated with analog components in a compact radar system, then device miniaturization is achieved, but noise interference from digital operations impacts RF performance
Solution Approach 1:
The patent divides the radar system into separate analog and digital domains with dedicated power supplies. The analog domain uses a low-noise power supply isolated from digital switching noise, while the digital domain uses a separate power supply. This segmentation physically separates the harmful digital noise from sensitive RF operations, enabling compact integration without compromising RF performance.
Solution Approach 2:
The patent introduces an intermediary power supply isolation mechanism between analog and digital components. By using separate power supply circuits with decoupling capacitors and isolation barriers, the system mediates the interaction between digital switching operations and analog RF operations, preventing noise propagation while maintaining compact form factor.
2Device complexity
If a single power supply is used for both analog and digital components, then device complexity is reduced, but noise from digital operations degrades RF signal quality
Solution Approach 1:
The patent segments the power supply system into separate analog and digital power supply circuits. Each domain has its own dedicated power supply with appropriate filtering and regulation, eliminating the noise coupling that would occur with a single shared power supply while maintaining manageable system complexity through modular architecture.
Solution Approach 2:
The patent applies local quality by providing domain-specific power supply characteristics tailored to each component type. The analog domain receives clean, low-noise power with specific filtering, while the digital domain receives power optimized for switching operations. This localized power delivery optimizes both signal quality and overall system efficiency.
3Ease of operation
If all memory components operate in active power state continuously, then data accessibility is improved, but overall power consumption increases
Solution Approach 1:
The patent implements periodic action by switching memory components between active and low-power states based on operational requirements. Memory blocks are activated only when needed for current processing tasks and transition to low-power states when not in use. This periodic activation pattern maintains data accessibility for active operations while dramatically reducing overall power consumption during idle periods.
Solution Approach 2:
The patent applies dynamics by making the memory power states changeable and adaptable rather than fixed. The system dynamically adjusts memory power states based on real-time operational needs, task priorities, and access patterns. This dynamic power management allows the system to optimize between accessibility and consumption based on current operational context.
Data Source
AI summary
A radar system may include a set of analog components to perform one or more radio frequency (RF) operations during an active radar phase of the radar system. The radar system may include a set of digital components to perform one or more digital processing operations during at least a digital processing phase of the radar system. The one or more digital processing operations may be performed such that performance of the one or more digital processing operations does not overlap performance of a substantive portion of the one or more RF operations.