一种模拟域异步频率检测电路
By using an analog-domain asynchronous frequency detection circuit, and utilizing a zero-crossing comparator and a time-to-digital converter to measure the zero-crossing event interval, the problems of high power consumption, large delay, and poor real-time performance in existing technologies are solved. This achieves low-latency, low-power frequency detection, which is suitable for radar, communication, and electronic reconnaissance systems.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- UNIV OF ELECTRONICS SCI & TECH OF CHINA
- Filing Date
- 2026-03-13
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies suffer from high power consumption, large latency, and poor real-time performance in frequency detection, making it difficult to meet the requirements of high-speed, wide-bandwidth, and low-power front-end real-time frequency detection.
An analog-domain asynchronous frequency detection circuit is adopted. The zero-crossing event of the input signal is detected by a zero-crossing comparator, and the time interval between adjacent zero-crossing events is measured by a time-to-digital converter to achieve frequency detection. The circuit structure is simplified, and dual TDCs are used to work alternately to avoid detection gaps.
It achieves low latency, high real-time performance, and low power consumption frequency detection, making it suitable for systems with stringent requirements for response speed and energy efficiency, and applicable to scenarios such as radar, communication, and electronic reconnaissance.
Smart Images
Figure CN122017343B_ABST