Fundamental wave mixing and harmonic wave mixing hybrid millimeter wave dual-band passive mixer

Abstract

The invention discloses a fundamental wave mixing and harmonic wave mixing hybrid millimeter wave dual-band passive mixer, which comprises a first-stage annular mixing core, a second-stage annular mixing core, a local oscillator distribution network, a quasi duplexer, a radio frequency balun and a load capacitor, a quasi-duplexer is introduced between two stages of annular frequency mixing cores,two different frequency conversion paths are obtained, one frequency conversion path (path I) is used for fundamental wave frequency mixing and is suitable for a millimeter wave low-frequency band, and the other frequency conversion path (path II) is used for harmonic frequency mixing and is suitable for a millimeter wave high-frequency band; by reasonably configuring the local oscillator frequency, the mixer not only can be switched between two different millimeter wave frequency bands for use, but also can work at the same time at the two frequency bands.

Description

technical field [0001] The invention belongs to the field of millimeter wave technology, and relates to a millimeter wave dual-band passive mixer, in particular to a fundamental wave mixer that can be switched between two different millimeter wave frequency bands and can also work in two frequency bands simultaneously. Frequency and harmonic mixing hybrid mmWave dual-band passive mixer. Background technique [0002] With the advent of the 5G era, the application of millimeter wave frequency bands has become a hot spot of concern in the communications industry of various countries. At present, many countries and regions in the world have released millimeter wave spectrum for 5G deployment, such as the 24.75-27.5GHz and 37-42.5GHz frequency bands in China, the 24.25-27.5GHz frequency band in the European Union, and the 27.5-28.35GHz frequency band in the United States. GHz, 37-40GHz and 47.2-48.2GHz and other frequency bands. In order to enable the same chip / system to suppor...

AI Technical Summary

Problems solved by technology

These two dual-band mixers use the harmonic components of the LO or the harmonic mixing mode in the higher mmWave frequency band, which effectively reduces the operating frequency of the LO, thus easing the design of the LO in the high mmWave band. However, they can only be switched between two frequency bands and cannot work in both frequency bands at the same time, which greatly limits their functions and application range.

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