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Gm-boosted differential voltage-controlled oscillator (VCO)

A voltage-controlled oscillator, differential technology, applied in power oscillators, electrical components, etc., can solve problems such as poor startup characteristics and high power consumption

Pending Publication Date: 2020-01-03
NXP USA INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Despite past developments, combining high output power oscillator signals to implement mmWave VCOs with low phase noise (PN) and wide tuning range (TR) remains challenging
[0004] It has been shown that state-of-the-art VCOs with a Colpitts configuration partially meet the above requirements, but with significantly poorer start-up characteristics, which means that high power dissipation must be accepted to ensure reliable start-up

Method used

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  • Gm-boosted differential voltage-controlled oscillator (VCO)
  • Gm-boosted differential voltage-controlled oscillator (VCO)
  • Gm-boosted differential voltage-controlled oscillator (VCO)

Examples

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Embodiment Construction

[0040] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. It is to be noted that the same reference numerals are used in the drawings to designate the same or equivalent elements, and descriptions thereof will not be repeated. The examples set forth below represent the necessary information to enable those skilled in the art to practice the invention. After reading the following description in light of the accompanying drawing figures, those skilled in the art will understand the concepts of the invention and will recognize applications of these concepts not particularly addressed herein. It should be understood that these concepts and applications fall within the scope of this disclosure and the appended claims.

[0041] refer to figure 1 , shows a schematic circuit diagram for illustrating the configuration of a Gm-enhanced differential voltage-controlled oscillator (VCO) according to an example of th...

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Abstract

The present application relates to a differential Colpitts voltage-controlled oscillator (VCO) circuit, which comprises a pair of transistors with control terminals biased by a common biasing voltageand a pair of couplers arranged to cross-couple corrector / drain of the transistors and the base / gate of the differential transistors. The pair of couplers have a coupling factor kc, which used to enhance the transconductance of the transistor pair, therefore can be used for power consumption reduction and phase noise minimalization.

Description

technical field [0001] The present disclosure generally relates to a differential voltage controlled (VCO) oscillator. In particular, the present disclosure relates to a Gm-enhanced (transconductance-enhanced) differential VCO with a Colpitts configuration. Background technique [0002] Automotive driver assistance systems (ADAS), high-throughput short-range wireless communications, and non-destructive scanning systems for safety and security have driven the development of mmWave silicon technology over the past few years. For example, ADAS utilizes ultra-wideband (UWB) / frequency-modulated continuous-wave (FMCW) radar circuits in the W-band (75GHz to 110GHz). A complete ADAS device typically includes a 77-81GHz short-range radar (SRR) UWB sensor for parking assistance, blind spot detection and collision mitigation assistance and a 76-77GHz with FMCW modulation for front monitoring and adaptive cruise control (ACC) Long range radar (LRR) sensor. Currently, IEEE (802.15.TG3...

Claims

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Application Information

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IPC IPC(8): H03B5/12
CPCH03B5/1212H03B5/1231H03B5/129H03B2200/0008H03B5/1215H03B5/1228H03B5/1243H03B5/1296H03B5/124H03B2200/004
Inventor 殷毅
Owner NXP USA INC
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