Multi-Band Radar IC Frequency Conversion for Compact Sensing
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Solution Overview
Problem
Traditional stepped frequency radar systems are limited in their capability to operate efficiently across multiple frequency bands, necessitating the development of a technology that can seamlessly transition between low-band and high-band frequencies within a single integrated circuit (IC) device.
Innovation Solution
The implementation of a multi-band radar sensing system using an integrated circuit device with transmit and receive components that can upconvert low-band signals to high-band signals and downconvert high-band signals to low-band signals using a conversion signal, enabling efficient operation in both low-band and high-band modes on a single IC device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional stepped frequency radar operates at a single frequency band, then the device complexity is reduced, but the adaptability and versatility of the radar system is limited
Solution Approach 1:
The patent implements a universal integrated circuit device that can operate across multiple frequency bands (low-band and high-band) by incorporating both low-band and high-band transmit interfaces and receive interfaces within a single device. The circuit uses a conversion signal generator to produce a conversion signal that enables the same circuit components to handle both frequency bands, making the device multi-functional and adaptable to different radar applications without requiring separate dedicated circuits for each band.
Solution Approach 2:
The patent changes the operational parameters of the radar system by dynamically switching between different frequency bands. The circuit receives control signals that determine whether to operate in low-band mode or high-band mode, and accordingly activates the appropriate transmit and receive interfaces. This parameter change approach allows the system to adapt its frequency of operation based on application requirements while using the same physical hardware infrastructure.
2Area of stationary object
If separate IC devices are used for low-band and high-band radar operations, then the reliability of each band is maintained, but the IC device real estate and system integration are reduced
Solution Approach 1:
The patent merges the low-band radar circuit and high-band radar circuit into a single integrated circuit device. The device includes both low-band transmit interface and high-band transmit interface, as well as corresponding receive interfaces, all integrated within the same chip. This consolidation reduces the overall area required compared to using separate devices while maintaining the functionality of both bands through shared components and a unified control architecture.
Solution Approach 2:
The integrated circuit is designed with universal components that can handle both low-band and high-band signals. The conversion signal generator produces a conversion signal that enables the circuit to process both frequency bands, and the transmit/receive interfaces are configured to operate in either band based on control signals. This multi-functional design allows a single device to replace what would traditionally require multiple separate devices.
3Measurement precision
If frequency conversion is implemented using separate circuits, then the conversion precision is maintained, but the device complexity and area increase
Solution Approach 1:
The patent combines the frequency conversion functionality into the main integrated circuit device rather than using separate external conversion circuits. The conversion signal generator is integrated within the chip and produces the conversion signal used by the mixers for upconversion and downconversion. This integration maintains conversion precision through controlled signal paths while reducing the overall device area by eliminating the need for separate conversion circuit boards or modules.
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 the efficient use of RF components, conserves IC device real estate, and facilitates multi-step downconversion to an intermediate frequency, enhancing the capability of the radar system to operate across diverse frequency bands for applications such as health parameter monitoring and security.
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
Implementation Method 2
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
Implementation Method 3
Radar detection involves transmitting electromagnetic energy and receiving reflected portions of the transmitted electromagnetic energy
Data Source
AI summary
Devices, systems, and methods for multi-band radar sensing are disclosed. In an embodiment, an integrated circuit device includes transmit components and receive components, a low-band transmit interface connected to output a first signal at a low-band frequency, a high-band transmit interface connected to output a second signal at a high-band frequency, a low-band receive interface connected to receive a third signal at the low-band frequency, a high-band receive interface connected to receive a fourth signal at the high-band frequency, and 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, wherein the upconversion and the downconversion are implemented using a conversion signal at a conversion frequency.