System and method for dual-core vco

A core and transistor technology, applied in the field of dual-core VCO systems, can solve problems such as poor phase noise performance

Active Publication Date: 2018-10-09
INFINEON TECH AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, as the frequency of operation of RF systems continues to increase, generating signals at such high frequencies becomes a significant challenge
Oscillators operating at high frequencies may suffer from poor phase noise performance caused by 1 / f and thermal noise in devices including VCOs

Method used

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  • System and method for dual-core vco
  • System and method for dual-core vco
  • System and method for dual-core vco

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0054] Example 1: A method of operating a voltage controlled oscillator (VCO), comprising: generating a first oscillation signal in a first VCO core and generating a second oscillation signal in a second VCO core such that the first oscillation signal and the second The oscillating signals have the same frequency and a fixed phase offset. The VCO includes a first VCO core and a second VCO core, and each VCO core includes a pair of transistors. The VCO also includes a transformer having a first winding coupled between control nodes of the transistor pair of the first VCO core and a second winding coupled between control nodes of the transistor pair of the second VCO core.

example 2

[0055] Example 2: The method of example 1, wherein the first VCO core and the second VCO core each include a Colpitts oscillator.

example 3

[0056] Example 3: The method of one of examples 1 and 2, further comprising buffering a fundamental frequency of the first oscillating signal from the output node of the transistor pair of the first VCO core or the second VCO core.

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Abstract

The invention discloses a system and method for dual-core VCO. In accordance with an embodiment, a method of operating a voltage controlled oscillator (VCO) includes generating a first oscillating signal in a first VCO core and generating a second oscillating signal in a second VCO core, such that the first oscillating signal and the second oscillating signal have a same frequency and a fixed phase offset. The VCO includes the first VCO core and the second VCO core, and each VCO core includes a pair of transistors. The VCO also includes a transformer having a first winding coupled between control nodes of the pair of transistors of the first VCO core and a second winding coupled between control nodes of the pair of transistors of the second VCO core.

Description

technical field [0001] The present invention relates generally to electronic devices and, in particular embodiments, to systems and methods for dual-core VCOs. Background technique [0002] Due to the rapid development of low-cost semiconductor technologies such as silicon-germanium (SiGe) and fine-geometry complementary metal-oxide-semiconductor (CMOS) processes, applications in the mmWave frequency range have attracted great interest over the past few years. The availability of high-speed bipolar and metal-oxide-semiconductor (MOS) transistors has led to increased demand for integrated circuits for millimeter-wave applications at 60 GHz, 77 GHz, and 80 GHz, and above 100 GHz. Such applications include, for example, automotive radar and multi-gigabit communication systems. [0003] In some radar systems, the range between the radar and the target is determined by transmitting a frequency modulated signal, receiving reflections of the frequency modulated signal, and determi...

Claims

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Application Information

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IPC IPC(8): H03B5/12H03B5/24
CPCH03B5/124H03B5/1256H03B5/1296H03B5/24H03B5/1243H03B5/1231H03B5/1293H03B2200/0008H03B2200/009H03B2200/004
Inventor V·伊萨科夫F·帕多万
Owner INFINEON TECH AG
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