Single-substrate millimeter wave radar system

Abstract

The invention provides a single-substrate millimeter wave radar system, and aims to provide a single-substrate radar system which has a high degree of integration and good versatility and enables high-frequency and low-frequency functional components to work simultaneously and compatibly. The technical scheme adopted is as follows: a millimeter wave transmitting antenna and a millimeter wave receiving antenna are integrated on the front side of a single substrate, and a millimeter wave radio-frequency front-end circuit and a signal processing circuit are integrated on the back side of the single substrate; the signal processing circuit sends a control signal to the millimeter wave radio-frequency front-end circuit, and the millimeter wave radio-frequency front-end circuit transmits a generated millimeter wave radio-frequency signal through the millimeter wave transmitting antenna according to the control signal; the millimeter wave receiving antenna feeds back the received millimeter wave radio-frequency signal to the millimeter wave radio-frequency front-end circuit; and the millimeter wave radio-frequency front-end circuit sends a processed intermediate-frequency signal to the signal processing circuit for fast Fourier transform FFT operation to get the radial distance and radial speed information of a target through calculation, and outputs target information detected by millimeter wave radar through an external interface circuit.

Description

technical field [0001] The present invention relates to occasions where millimeter-wave radar needs to be miniaturized, installed and used, especially a single-substrate millimeter-wave radar system that needs to break through and solve the integration and miniaturization design of millimeter-wave antennas, millimeter-wave radio frequency front-ends, and signal processing circuits. Background technique [0002] Millimeter waves are being widely developed and applied in the fields of radar, target recognition and detection, communication, meteorology, and remote sensing. The operating frequency of millimeter waves is between microwaves and light, and is located in the wavelength range where microwaves and far-infrared waves overlap. Usually, millimeter waves refer to electromagnetic waves with a frequency range of 30-300 GHz and a wavelength of 1 mm to 10 mm. Because of the characteristics of two kinds of spectrums, the high end of the millimeter wave spectrum is close to inf...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to address the shortcomings of the existing millimeter-wave radar system, and provide a single-substrate millimeter-wave radar with low technical difficulty, high integration, good versatility, and compatibility with high-frequency and low-frequency functional components. system to solve the problems of completely independent and separate design of millimeter-wave radar systems, large product volume and weight, and high development costs

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