High-performance voltage-controlled oscillator

A voltage-controlled oscillator, high-performance technology, applied in pulse generation, electrical components, electric pulse generation, etc., can solve the problem that VCO is difficult to meet broadband at the same time

Inactive Publication Date: 2019-09-24
WUHAN SYNTEK CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] The present invention aims at the problem that existing widely used VCOs are difficult to simultaneously satisfy broadband and low phase noise, and p

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Embodiment Construction

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to 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 making creative efforts belong to the protection scope of the present invention.

[0041] A high-performance voltage-controlled oscillator provided by an embodiment of the present invention, such as figure 1 As shown, the voltage controlled oscillator includes: an automatic amplitude control circuit 1 , a first compensation loop 2 , an inductance component 3 , a capacitor component 4 and a second compensation loop 5 .

[0042] The automatic amplitude control circuit 1 includes a digital automatic amplitude control circuit 11 and an analog au...

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Abstract

The invention discloses a high-performance voltage-controlled oscillator, and belongs to the technical field of semiconductor integrated circuits. The voltage-controlled oscillator comprises an automatic amplitude control circuit (1), a first compensation loop (2), an inductor assembly (3), a capacitor assembly (4) and a second compensation loop (5) which are connected in parallel. The automatic amplitude control circuit (1) comprises a digital automatic amplitude control circuit (11) and an analog automatic amplitude control circuit (12), and through the combination of the digital automatic amplitude control circuit and the analog automatic amplitude control circuit, the voltage-controlled oscillator can work at a critical point of a current limited region and a voltage limited region. The inductor assembly (3) adopts an 8-type inductor designed by connecting metal layers in parallel. The capacitor assembly (4) comprises a switched capacitor array unit (41) and a varactor unit (42), so that the voltage-controlled oscillator realizes a broadband function. According to the voltage-controlled oscillator, the broadband and low-phase noise are realized, and meanwhile, the low-power consumption performance can be realized.

Description

technical field [0001] The invention relates to the technical field of semiconductor integrated circuits, in particular to a high-performance voltage-controlled oscillator. Background technique [0002] With the development of wireless communication technology and integrated circuit industry, transceiver chips compatible with multiple protocols have become a research hotspot in the field of wireless communication. As a key module of the RF front-end, the frequency synthesizer is mainly used to provide a frequency-programmable local carrier signal to the frequency conversion circuit in the transceiver. In order to improve spectrum efficiency, most modern wireless communication systems use frequency division multiplexing technology to divide the total bandwidth of the channel used to transmit signals into several sub-frequency bands (or sub-channels), and each sub-channel transmits one signal. The wireless transceiver performs real-time channel switching according to channel ...

Claims

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Application Information

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IPC IPC(8): H03K3/013H03K3/012
CPCH03K3/013H03K3/012
Inventor 刘览琦邹维胡昂杨阳江帆逯召静石琴琴张科峰
Owner WUHAN SYNTEK CO LTD
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