Excitation source circuit module for micro radar

Abstract

The invention belongs to the field of radars and provides an excitation source circuit module for a micro radar; the excitation source circuit module comprises a mono-stable pulse generation circuit, a mono-stable pulse delay circuit and an excitation pulse output circuit, wherein the mono-stable pulse generation circuit is used for outputting a pulse signal with a certain pulse width; the mono-stable pulse delay circuit is connected with the mono-stable pulse generation circuit and used for receiving the pulse signal output by the mono-stable pulse generation circuit and outputting a delay pulse signal; and the excitation pulse output circuit is connected with the mono-stable pulse delay circuit and used for performing delay treatment of the pulse signal and outputting a periodic pulse signal. According to the invention, a forward narrow pulse signal with a certain pulse width is generated by the mono-stable pulse generation circuit; a certain delay time is formed by the mono-stable pulse delay circuit; after being subjected to the delay treatment, the pulse signal forms the periodic pulse signal through the excitation pulse output circuit and is output to a radar excitation circuit; the signal receiving and transmitting isolation of the radar is increased; and the multi-path interference of echo after being reflected and refracted for many times on the radar is avoided.

Description

technical field [0001] The invention belongs to the field of radar, in particular to an excitation source circuit module for micro radar. Background technique [0002] At present, clinical methods for monitoring the vital signs of hospitalized patients include: [0003] (1) Nurses round the ward to detect breathing, heartbeat, etc.; [0004] (2) Use sensors such as instruments and corresponding electrodes for contact monitoring. [0005] The non-contact radar life detection technology is used to monitor the breathing and heartbeat of hospitalized patients, which not only reduces the workload of nurses, but also does not interfere with sleeping patients. More importantly, it can grasp the status of patients in real time, continuously and at any time. . In order to take appropriate medical measures in a timely manner. [0006] Micro and micro-power radars used for clinical monitoring require small size, easy installation without affecting the ward environment, and at the s...

AI Technical Summary

Problems solved by technology

[0008] The present invention provides an excitation source circuit module for micro-radar, aiming to solve the problem that when the radar provided by the prior art uses a circulator as the excitation source, the isolation between the received signal and the transmitted signal is low, and the echo is reflected multiple times. It can only enter the radar after refraction and multipath interference to the radar

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