slide1 n.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
National Changhua University Department of Graduate Institute of Integrated Circuit Design PowerPoint Presentation
Download Presentation
National Changhua University Department of Graduate Institute of Integrated Circuit Design

Loading in 2 Seconds...

play fullscreen
1 / 22

National Changhua University Department of Graduate Institute of Integrated Circuit Design - PowerPoint PPT Presentation


  • 121 Views
  • Uploaded on

Programmable active inductor-based wideband VCO/QVCO design G. Huang B.-S. Kim Microwaves, Antennas & Propagation, IET Page (s):830-838 Dec. 2008. National Changhua University Department of Graduate Institute of Integrated Circuit Design Advisor : Dr. Zhi-Ming Lin Advisee : Shi-Hao Zheng.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'National Changhua University Department of Graduate Institute of Integrated Circuit Design' - declan-harding


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
slide1

Programmable active inductor-based wideband VCO/QVCO designG. Huang B.-S. KimMicrowaves, Antennas & Propagation, IETPage (s):830-838 Dec. 2008

National Changhua University

Department of Graduate Institute of Integrated Circuit Design

Advisor : Dr. Zhi-Ming Lin

Advisee : Shi-Hao Zheng

outline
outline
  • Abstract
  • Introduction
  • Active inductor design
  • Programmable wideband VCO/QVCO design
  • Phase-noise analysis of the proposed VCO topology
  • Measurement results
  • Conclusions
abstract
Abstract
  • Programmable wideband VCO and QVCO which adopt modified gyrator-C-type active inductors with PMOS transistors in the feedback path are presented here.
introduction
Introduction
  • There are mainly two approaches to integrate the multimode and multi-band systems.

1.Parallel integration of many receivers on the chip level sharing the common blocks each maintaining a signal path.

2.Software-defined radio (SDR) system.

Among 1. and 2., either multiple local oscillators (LO) or a programmable wideband LO is required.

  • The programmable wideband LO is more attractive than the multiple LOs in the modern IC design, due to its characteristic of small chip size and low power dissipation.
slide16
The total noise current of the active inductor-based VCO is much larger than that of the passive LC-VCO.
  • However, the noise power from the active inductor can be reduced by increasing the feedback resistor Rv or parasitic capacitor Cv, but that lowers the oscillation frequency and frequency tuning range.
  • Therefore, a trade-off among phase noise, oscillation frequency and tuning range must be considered for the design of wideband VCO based on the active inductor.