Pulse Radar Clock Timing for Directivity and Range Control
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Solution Overview
Problem
Pulse radar systems face complexity and increased cost due to the need for phase delay elements to achieve TX and RX directivities, making it challenging to configure on-chip radar devices that effectively control target range and directivity.
Innovation Solution
A pulse radar device that adjusts directivity using clock signals by controlling the time delays between multiple TX and RX clock signals, allowing for flexible control of transmitter and receiver directivity and detection range through a pulse radar driving unit generating multiple clock signals from a reference clock.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If phase delay elements are used to achieve TX and RX directivities, then directivity control is improved, but device complexity and system cost increase
Solution Approach 1:
The patent replaces mechanical phase delay elements with electronic clock signal timing control. Instead of using physical phase shifters or delay lines, the system controls TX and RX directivity by adjusting the timing relationships between multiple clock signals that drive the transmit and receive operations. This substitution of mechanical/electronic phase control with temporal synchronization control reduces hardware complexity while maintaining directivity functionality.
Solution Approach 2:
The patent changes the control parameter from phase delay (requiring physical delay elements) to time delay between clock signals (controlled through timing circuits). By controlling the time delays between multiple TX clock signals and between RX clock signals, the system achieves directivity control through parameter adjustment rather than physical component changes, thereby reducing device complexity.
2Ease of operation
If phase delay elements are used to achieve TX and RX directivities, then directivity control is improved, but system cost rises
Solution Approach 1:
The patent replaces expensive phase delay elements with simpler clock signal timing control mechanisms. By using multiple clock signals with controllable time delays to achieve directivity, the system eliminates the need for costly phase shifter hardware, thereby reducing manufacturing costs while maintaining the ability to control TX and RX directivity.
3Adaptability or versatility
If multiple clock signals with adjustable delays are used, then on-chip integration is improved, but signal synchronization complexity increases
Solution Approach 1:
The patent uses a universal clock signal distribution system that serves multiple functions: it provides timing for TX pulse generation, controls RX sampling timing, and enables directivity control through adjustable delays. This multi-functional clock system facilitates on-chip integration by providing a single synchronization source for all radar operations, reducing the need for separate control circuits while maintaining the ability to adjust timing parameters.
Data Source
AI summary
Provided is a pulse radar device including: a TX unit configured to emit a TX pulse according to a single TX clock signal; a multiple-RX units configured to receive echo pulses received through a plurality of RX antennas according to multiple RX clock signals; a pulse radar driving unit configured to generate the single TX clock signal and the multiple RX clock signals using a reference clock signal. The pulse radar driving unit provides the single TX clock signal and the multiple RX clock signals for the TX unit and the multiple-RX unit. The pulse radar driving unit adjusts an RX clock-to-clock delay that is the delay between the multiple RX clock signals so as to adjust a directivity of the multiple-RX unit, and a TX-to-RX delay between the single TX clock signal and the multiple RX clocks signals so as to adjust a detection range.