Millimeter wave frequency modulated continuous wave (FMCW) two-unit phased array distance and velocity measurement monolithic radar transceiver

A unit phase and millimeter wave technology, applied in radio wave measurement systems, instruments, etc., can solve the problems of high price, large size, and restrictions on the widespread use of millimeter wave radar, and achieve the effect of low cost and small size

Active Publication Date: 2013-01-09
TSINGHUA UNIV
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  • Claims
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AI Technical Summary

Problems solved by technology

[0004] Most of the millimeter-wave radars currently in the market are implemented with discrete microwave

Method used

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  • Millimeter wave frequency modulated continuous wave (FMCW) two-unit phased array distance and velocity measurement monolithic radar transceiver
  • Millimeter wave frequency modulated continuous wave (FMCW) two-unit phased array distance and velocity measurement monolithic radar transceiver
  • Millimeter wave frequency modulated continuous wave (FMCW) two-unit phased array distance and velocity measurement monolithic radar transceiver

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Embodiment Construction

[0028] The invention consists of an FMCW transmitting module, a two-unit receiving module, a digital control module and a bias generating module. The FMCW transmitting module is mainly composed of a phase-locked loop PLL that generates FMCW modulation signals and a power amplifier PA; the two-unit receiving module is mainly composed of two parallel low-noise amplifiers LNA1 and LNA2, two parallel mixers MIXER1 and MIXER2 and two It consists of parallel phase shifters PHASE SHIFTER1 and PHASE SHIFTER2, an analog baseband part and a digital-to-analog converter ADC.

[0029] exist figure 2 An embodiment of the ranging and speed measuring single-chip radar system is given in . This embodiment includes three parts, an antenna part, a single-chip radar part for distance measurement and speed measurement, and a digital processing baseband part. Among them, the antenna part includes two receiving antennas RX_ANT_1 and RX_ANT_2 and one transmitting antenna TX_ANT, and the digital pr...

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Abstract

The invention provides a millimeter wave frequency modulated continuous wave (FMCW) two-unit phased array distance and velocity measurement monolithic radar transceiver and belongs to the field of distance and velocity measurement radar transceivers. The millimeter wave FMCW two-unit phased array distance and velocity measurement monolithic radar transceiver is characterized by being formed by a FMCW transmitting module, a two-unit receiving module, a digital control module and a polarization generating module. The FMCW transmitting module is used for generating FMCW continuous-wave modulated signals, the continuous-wave modulated signals are sent out through an antenna after being amplified, the two-unit receiving module is used for processing signals reflected back from a target, the digital control module is used for controlling configurable amount in a system, sweep frequency cycle of FMCW modulation signals, sweep frequency bandwidth, signal transmitting power, gain of a receiving branch, bandwidth of a five-order Butterworth low-pass filter and phase shift value of a phase shifter can be configured, and the millimeter wave FMCW two-unit phased array distance and velocity measurement monolithic radar transceiver can be applied to detection of targets at close distance, far distance and different angles.

Description

technical field [0001] The invention belongs to the field of range-measuring and speed-measuring radar transceivers, and in particular relates to a radar transceiver device working in the millimeter wave band and adopting a continuous wave modulation (FMCW) mode for two-unit phased array reception realized by single-chip integrated circuit technology. Background technique [0002] The frequency band of the millimeter wave is 30GHz~300GHz, and its wavelength is in the range of 1mm~10mm. Due to the particularity of its wavelength, millimeter waves have unique properties. Compared with submillimeter waves, infrared and visible light bands, millimeter waves have very little attenuation in environments such as smoke, fog, clouds, and sandstorms. Therefore, in many scenarios where infrared and visible light detection equipment cannot work normally, millimeter waves can still work normally, which can greatly improve the adaptability of millimeter wave detection equipment to complex...

Claims

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Application Information

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IPC IPC(8): G01S7/28G01S7/282G01S7/285
Inventor 池保勇贾海昆况立雪王志华
Owner TSINGHUA UNIV
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