Narrowband switching millimeter wave voltage-controlled oscillator with wide tuning range

A technology of voltage-controlled oscillators and wide tuning, applied in power oscillators, electrical components, etc., can solve problems such as poor phase noise performance, achieve good phase noise, avoid high-order harmonic distortion, and good symmetry
CN110729967AActive Publication Date: 2020-01-24TIANJIN UNIV
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
TIANJIN UNIV
Publication Date
2020-01-24

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Abstract

The invention discloses a narrowband switching millimeter wave voltage-controlled oscillator with a wide tuning range, and the narrowband switching millimeter wave voltage-controlled oscillator comprises a negative resistance unit which provides energy for maintaining oscillation for a resonant cavity, and a main oscillation circuit which employs an improved pi-type differential circuit structureand is used for achieving the oscillation and improving the quality factor of a resonant circuit; the filter capacitor and the tail current source MOS tube form a low-pass filter, so that the phase noise of the oscillator is reduced; the narrowband switching circuit comprises four basic LC VCOs. The output buffer circuit connects the four narrow-band VCOs in a common-drain manner, outputs the selected narrow-band VCO, and provides driving for subsequent circuits. According to the invention, based on the 65nm CMOS process design, good noise performance is realized.
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Description

technical field

[0001] The invention relates to the field of radio frequency oscillators, in particular to a millimeter-wave voltage-controlled oscillator with a wide tuning range based on CMOS technology, using narrow-band switching technology and an improved ฯ€-type structure. Background technique

[0002] With the continuous development of modern science and technology, wireless communication technology has become the biggest hotspot in the field of communication, and it has also been widely used in mobile phone networks, wireless local area networks, Bluetooth, satellite TV, aerospace, radar technology, national defense and military affairs, etc. Radio Frequency Integrated Circuit (RFIC), as the physical support of wireless communication technology, has been gradually integrated into the field of daily life and national security, and is constantly changing our production and lifestyle. Among them, millimeter waves can solve many problems faced by signals in high-speed tra...

Claims

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