Phase-Coded MIMO Radar Front-End With Integrated Frequency Doubling
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Solution Overview
Problem
Current near-THz radar systems are not effectively utilizing phase-coded MIMO operation due to architectural and circuit-level limitations, leading to inefficiencies in power and frequency multiplication, which hinders high spatial resolution and image quality.
Innovation Solution
A phase-coded transmitter front-end architecture for MIMO radars is implemented, integrating frequency multiplication and phase-coding functionalities into a unified transmitter block using a quadrature-phased distributed doubler core, which serves as an antenna driver, and employs digital on-off control in the I/Q path to achieve phase coding at twice the input frequency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If conventional near-THz radar systems use traditional transmitter architectures, then system operation is maintained, but power efficiency and frequency multiplication performance deteriorate
Solution Approach 1:
The patent merges frequency multiplication and phase-coding functionalities into a unified transmitter block using a quadrature-phased distributed doubler core. This integration eliminates separate frequency multiplication stages and traditional phase coders, achieving both frequency doubling and phase coding simultaneously while improving power efficiency and reducing system complexity.
Solution Approach 2:
The distributed doubler core serves multiple functions: it acts as a frequency multiplier (doubling the input frequency), a phase coder (applying phase shifts through digital on-off control in the I/Q path), and an antenna driver. This multi-functionality resolves the contradiction by consolidating multiple operations into a single efficient component.
2Measurement precision
If traditional transmitter blocks are used for phase-coded MIMO operation, then system compatibility is maintained, but spatial resolution and image quality deteriorate
Solution Approach 1:
By combining frequency multiplication and phase-coding into a unified distributed doubler core, the patent reduces the number of separate components needed in the transmitter architecture. This simplification maintains system compatibility while improving spatial resolution through more efficient phase-coded MIMO operation.
Solution Approach 2:
The patent changes the operational parameters of the transmitter by using digital on-off control in the I/Q path to achieve phase coding at twice the input frequency. This parameter change enables more efficient use of the available spectrum and improves image quality through enhanced phase resolution.
3Adaptability or versatility
If separate frequency multiplication and phase coding stages are used, then implementation flexibility is maintained, but bandwidth and power delivery efficiency deteriorate
Solution Approach 1:
The patent merges separate frequency multiplication and phase coding stages into a single distributed doubler core with quadrature-phased inputs. This integration eliminates redundant components and reduces energy losses associated with multiple signal processing stages, while maintaining implementation flexibility through configurable digital control.
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 architecture enables broadband operation, high output power, and efficient power delivery at near-THz frequencies, overcoming power inefficiencies and bandwidth limitations in existing systems.
Implementation Method 1
a distributed doubler core configured to receive the phased signals, at least one processor and at least one memory having instructions stored thereon such that, when executed, the instructions cause the distributed doubler core to process the phased signals to produce a phase-coded output signal at an output frequency, wherein the output frequency is at least twice the input frequency
Data Source
AI summary
A system (200, 300, 400, 500) and method are provided for an implementation of a phase-coded transmitter front-end architecture for a multiple input, multiple output (MIMO) radar system. This architecture achieves broadband operation, supports major power savings, delivers high wireless power, and operates in the near-THz range. Power combining implementations are also provided.