Radio Frequency Circuits for Tunable Multi-Band CMOS Receivers for Wireless LAN Applications

Abstract

Currently, three mainstream wireless LAN (WLAN) standards, IEEE 802.11a, b and g, co-exist in the market. The network should be able to work with all these standards. This has increased the demand of multi-band wireless LAN transceivers. Being a commercial application, the transceiver must be low cost, which points to a CMOS single chip solution. This dissertation addresses the design issues of multi-band CMOS WLAN receivers. A multi-band and multi-function receiver architecture is proposed for wireless LAN applications. The key blocks include RF switches, a multi-band RF down-converter, a multi-band voltage controlled oscillator (VCO) and a wide-tuning range VCO. This thesis work demonstrates the feasibility of realizing these circuits in CMOS technology. Two RF CMOS switches working at 2.4 GHz and 5.8 GHz were designed and tested. The 2.4-GHz switch exhibits sufficient performance for 802.11b/g applications.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 2004
Accession Number
ADA465551

Entities

People

  • Zhenbiao Li

Organizations

  • University of Florida

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Amplitude Modulation
  • Automatic Gain Control
  • Bandwidth
  • Circuit Boards
  • Communication Systems
  • Converters
  • Frequency
  • Frequency Bands
  • Integrated Circuits
  • Local Area Networks
  • Low Noise Amplifiers
  • Modulation
  • Multiple Access
  • Orthogonal Frequency Division Multiplexing
  • Radio Frequency
  • Resonant Frequency
  • Semiconductors

Readers

  • Computer Networking
  • Electronics Engineering
  • Integrated Circuit Design and Technology.