A low-voltage frequency mixer

A mixer and low-voltage technology, applied in the field of low-voltage CMOS folded cascode mixers, to meet the requirements of lower power supply voltage, facilitate low-voltage and low-power design, and improve linearity and noise performance
CN101188402BInactive Publication Date: 2010-06-09BEIHANG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
BEIHANG UNIV
Publication Date
2010-06-09
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a low-voltage CMOS folding co-source co-grid mixer. The mixer includes the following parts: a pair of transconductance poles composed of NMOS tubes, tow pairs of switch poles composed of NMOS tubes, a pair of load poles composed of NMOS, and a current source. In the structure of the mixer circuit, the transconductance poles are connected with the switch poles in a co-sourceco-grid method. The invention solves the problems of the high power supply high voltage caused by the overlapping of the transconductance poles and the switch poles of the traditional Gilbert mixer, and the compromise design between the high transconductance and the high linearity of the transconductance poles and the low noise of the switch poles. The invention can be used in the application of the deep submicron RF CMOS circuit, in particular in the design developing of the satellite navigation double-system compatible receiver radio frequency integrated circuit. The invention has bright application prospect in both the military and the civilian fields.
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Description

technical field

[0001] The invention belongs to the field of deep submicron RF CMOS integrated circuits, and in particular relates to a low-voltage CMOS folded cascode mixer. Background technique

[0002] The mixer is an important part of the navigation receiver, which is mainly used to realize the frequency conversion. Some performance parameters of the mixer directly affect the performance of the entire navigation receiver, for example: the conversion gain of the mixer determines the influence degree of the post-stage module of the mixer in the navigation receiver to the system performance, the mixer function The reduction of power consumption has an important impact on the reduction of power consumption of the receiver system. The improvement of the linearity of the mixer plays a key role in the improvement of the linearity of the entire receiver. The noise of the mixer also seriously affects the sensitivity of the receiver. Therefore, it is very important to have a mixe...

Claims

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