Voltage-controlled oscillator and electronic equipment

Abstract

The invention discloses a voltage-controlled oscillator and electronic equipment, the voltage-controlled oscillator comprises a bias circuit, a core circuit and a buffer stage circuit which are connected in sequence, and the core circuit comprises a PMOS cross coupling pair, an NMOS cross coupling pair and an LC resonance circuit which are connected in parallel. Compared with an existing voltage-controlled oscillator, the core circuit of the voltage-controlled oscillator provides negative resistance through the PMOS cross coupling pair and the NMOS cross coupling pair, the number of active devices and the number of stacked layers in the core circuit are reduced, and optimization of the noise performance of the voltage-controlled oscillator and low-voltage implementation are facilitated; meanwhile, according to the voltage-controlled oscillator, the substrate voltage of the PMOS cross coupling pair and the NMOS cross coupling pair in the core circuit is adjusted through the biasing circuit, so that the voltage-controlled oscillator can work under low voltage and low power consumption, meanwhile, the change amplitude of the current of the core circuit and the transconductance of the MOS tube along with the change of environmental factors such as temperature can be reduced, and the circuit robustness is improved.

Description

A voltage controlled oscillator and electronic equipment technical field [0001] The application relates to the technical field of radio frequency integrated circuits, in particular to a voltage controlled oscillator and electronic equipment. Background technique In recent years, with the rapid development of wireless communication technology, all walks of life for the transmission and processing of information data. The requirements have also increased, and the fourth-generation wireless communication technology has gradually been unable to meet the requirements, and people urgently need higher data. Therefore, the fifth generation wireless communication system emerges as the times require. However, with the fifth generation With the gradual application and popularization of line communication systems, its frequency resources have become very valuable. At present, the frequency spectrum below 6 GHz has been Crowded and high occupancy rate. In order to obtain higher...

AI Technical Summary

Problems solved by technology

However, with the gradual application and popularization of the fifth-generation wireless communication system, its frequency resources have become very precious. At present, the spectrum below 6GHz is already very crowded and has a high occupancy rate.

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