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Dual-mode oscillator and multiphase oscillator

An oscillator, multi-phase technology, applied in power oscillators, electrical components, etc., can solve problems such as poor phase noise performance and limit the performance of communication systems, and achieve the effect of improving phase noise performance

Inactive Publication Date: 2017-04-19
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the existing dual-mode oscillator can provide wide-band oscillation signal output, its phase noise performance is still poor, which is one of the important factors limiting the performance of communication systems

Method used

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  • Dual-mode oscillator and multiphase oscillator
  • Dual-mode oscillator and multiphase oscillator
  • Dual-mode oscillator and multiphase oscillator

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Embodiment Construction

[0053] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0054] figure 2 A circuit structure diagram of a dual-mode oscillator provided in the embodiment of the present application. The dual-mode oscillator can be applied to various fields including wireless communication systems.

[0055] Such as figure 2 As shown, the dual-mode oscillator provided in the embodiment of the present application is designed based on a transformer-coupled oscillator, and may specifically include two transformer-coupled oscillators 210 and...

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Abstract

Embodiments of the invention disclose a dual-mode oscillator and a multiphase oscillator. The dual-mode oscillator achieves switching two working modes through a mode switching circuit to obtain oscillation signals of two different frequency ranges. At the same time, two transformer coupled oscillators are adopted to form the dual-mode oscillator. A step up transformer in each transformer coupled oscillator multiplies the voltage amplitude of the drain electrode of a first MOS tube and injects the multiplied voltage amplitude into the grid electrode of a second MOS tube, so that the larger grid electrode voltage amplitude is obtained without increasing power supply voltage of the oscillator, thereby improving the phase noise performance of the dual-mode oscillator. The multiphase oscillator is characterized in that multiple dual-mode oscillators are connected through a multi-phase coupling circuit to form a Mobius band, multiphase oscillation signal can be generated, and the phase noise performance of the whole oscillator can be improved.

Description

technical field [0001] The present application relates to the technical field of oscillators, in particular to a dual-mode oscillator and a multi-phase oscillator based on the dual-mode oscillator. Background technique [0002] An oscillator is an energy conversion device that converts DC power into AC power with a certain frequency. It is widely used in various fields such as measurement, automatic control, wireless communication and remote control. In a wireless communication system, an oscillator (such as a carrier oscillator of a transmitter) is mainly used to generate a multi-frequency oscillating signal output; the frequency range of the oscillating signal determines the working bandwidth of the wireless communication system. With the development of the wireless communication system, the wireless communication system is required to have a wider operating bandwidth, which requires the oscillator used in the system to output an oscillation signal with as wide a frequency...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03B1/02
CPCH03B5/24H03B5/1228H03B5/1218H03B5/1296H03B5/1243H03B27/00H03B2200/0074H03B2200/009H03B2201/0266H03B5/1265H03B5/1212H03B2200/0072H03B5/1209H03B5/1215H03B5/02
Inventor 舒一洋钱慧珍罗讯
Owner HUAWEI TECH CO LTD
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