Multi-band millimeter wave signal source

Abstract

The invention discloses a multi-band millimeter wave signal source. The multi-band millimeter wave signal source includes a modulation module, an intermediate frequency module, a frequency division module and a radio frequency module. The modulation module modulates multiple input baseband signals to generate modulation signals, and transmits the modulation signals to the intermediate frequency module; the intermediate frequency module processes the modulation signals to obtain intermediate frequency signals, and transmits the intermediate frequency signals to the frequency division module; the frequency division module processes the intermediate frequency signals to obtain signals of different multiple frequencies; and the radio frequency module includes multiple radio frequency circuits,and signals processed by the frequency division module respectively enter different radio frequency circuits for processing and are emitted. The multi-band millimeter wave signal source is advantageous in that through co-utilization of a set of modulation and intermediate frequency modules, the equipment quantity is reduced, the cost is reduced, miniaturization is easier; through the integrationof three kinds of different frequency ranges, the signal utilization rate is improved, advantages of the three frequency ranges are integrated, clutter can be effectively inhibited; and the multi-bandmillimeter wave signal source has a wide application prospect in the field of automotive anti-collision radar, and the like.

Description

technical field [0001] The present invention relates to the technical field of millimeter waves, in particular to a multi-band millimeter wave signal source. Background technique [0002] Millimeter waves are located in the wavelength range where microwaves and far-infrared waves overlap, so they have the characteristics of both spectra. The theory and technology of millimeter wave are the extension of microwave to high frequency and the development of light wave to low frequency. Compared with light waves, millimeter waves have less attenuation when propagating through the atmospheric window, and are less affected by natural light and thermal radiation sources. It has the advantages of extremely wide bandwidth, narrow beam, less affected by climate, and easy miniaturization of components, etc., and has broad application prospects in the fields of communication, radar, remote sensing, and astronomy. [0003] The rapid development of automotive electronics has promoted the ...

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Problems solved by technology

[0004] In addition, the signal source needs to use a filter to filter and select the channel. The current filter has the defects of high transmission loss and low out-of-band suppression, which leads to poor clutter filtering effect and affects the work of the signal source. stability

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