Multi-Band Radar IC with Shared Upconversion for Stepped Sensing
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Solution Overview
Problem
Traditional stepped frequency radar systems are limited in their ability to efficiently operate across multiple frequency bands, requiring separate components and modes for low-band and high-band operations, which complicates implementation and resource usage in integrated circuit devices.
Innovation Solution
The integration of transmit and receive components in a single integrated circuit device that uses a conversion signal to upconvert low-band signals to high-band signals for transmission and downconvert high-band signals to low-band signals for reception, enabling efficient operation in both low-band and high-band modes using a single IC device, with specific frequency ranges such as 2-6 GHz and 122-126 GHz.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate components and modes are used for low-band and high-band operations, then frequency band coverage is improved, but device complexity increases
Solution Approach 1:
The patent implements a single integrated circuit device that can operate in both low-band and high-band modes by using frequency conversion techniques. The same hardware components (transmit components, receive components, mixers) are used across both frequency bands, with the ability to switch between bands through frequency upconversion and downconversion operations, thereby achieving multi-functionality without requiring separate dedicated components for each band.
Solution Approach 2:
The patent changes the operating frequency parameter dynamically by using mixers to upconvert low-band signals to high-band frequencies and downconvert high-band signals to low-band frequencies. This allows the same hardware to adapt to different frequency bands by modifying the frequency parameter through signal conversion, rather than requiring separate hardware configurations for each band.
2Adaptability or versatility
If separate components are used for low-band and high-band operations, then frequency band coverage is improved, but resource usage efficiency deteriorates
Solution Approach 1:
The patent makes the same transmit components, receive components, and mixing circuits serve both low-band and high-band operations. By designing the system so that these components can operate across multiple frequency bands through frequency conversion, the patent eliminates the need for duplicate hardware resources for each band, thereby improving resource usage efficiency while maintaining broad frequency coverage.
Solution Approach 2:
The patent merges the low-band and high-band operational paths into a single integrated circuit device. Instead of having separate component sets for each band, the patent combines the functionality into one device where components share common resources (such as oscillators, amplifiers, and signal processing circuits), reducing the total quantity of hardware resources required.
3Ease of manufacture
If traditional stepped frequency radar is implemented, then implementation simplicity is improved, but capability expansion deteriorates
Solution Approach 1:
The patent maintains the simplicity of traditional stepped frequency radar implementation by keeping the core radar architecture intact, but expands capability by introducing frequency conversion through mixers. The system can now change operating bands by adjusting frequency conversion parameters rather than requiring complete redesign, thus expanding capabilities while preserving implementation simplicity.
Solution Approach 2:
The patent introduces mixers as intermediary components that enable frequency conversion between low-band and high-band operations. These mixers act as mediators that allow the radar system to access multiple frequency bands without fundamentally altering the traditional stepped frequency radar architecture, thus expanding capability while maintaining relative simplicity through the use of standard frequency conversion techniques.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach allows for a highly integrated multi-band RF IC device that can efficiently implement stepped frequency radar sensing across different frequency bands, optimizing resource usage and enabling applications in health parameter monitoring and security, such as blood glucose monitoring and weapon detection.
Implementation Method 1
mixers connected to upconvert the first signal at the low-band frequency to the second signal at the high-band frequency for transmission from the high-band transmit interface and to downconvert the fourth signal at the high-band frequency received at the high-band receive interface to a fifth signal at the low-band frequency
Data Source
AI summary
Devices, systems, and methods for multi-band radar sensing are disclosed. A method for operating an IC device involves setting a configuration of the IC device to select from available options of low-band and high-band operational modes, transmitting and receiving RF signals at a low-band frequency when the configuration of the IC device is set to the low-band operational mode, and transmitting and receiving RF signals at a high-band frequency when the configuration of the IC device is set to the high-band operational mode, wherein transmitting RF signals at the high-band frequency comprises upconverting a first signal at the low-band frequency to a second signal at the high-band frequency and wherein receiving RF signals at the high-band frequency comprises downconverting a third signal at the high-band frequency to a fourth signal at the low-band frequency, wherein the upconversion and the downconversion are implemented using a conversion signal at a conversion frequency.