A frequency synthesizer with optimally coupled QVCO and harmonic-rejection SSBmixer for multi-standard wireless receiver

Deping Huang, Wei Li, Jin Zhou, Ning Li, Jinghong Chen

Research output: Contribution to journalArticlepeer-review

Abstract

This paper presents a wide-band fractional-N frequency synthesizer for multi-standard cellular and short-range wireless communication receivers. The synthesizer covers the frequency band from 1.8 to 6 GHz and supports the standards of DCS1800, WCDMA, TD-SCDMA, WLAN802.11 a/b/g and Bluetooth. Architecture design and frequency planning are carefully performed to tradeoff wide frequency range and power efficiency. A quadrature voltage-controlled oscillator (QVCO) with a new phase shifter scheme is developed which shows better phase noise performance and more stable oscillation. Combining harmonic rejection and single sideband mixing, a harmonic-rejection SSBmixer (HR-SSBmixer) is developed to suppress unwanted sidebands and spurious signals. It serves as a power-saving solution to generate the LO signal for the 802.11a mode by avoiding power-hungry poly-phase filters or high-frequency LO buffers and dividers. The synthesizer is designed in a 0.13-μ m CMOS technology. It occupies an active area of 1.86 mm2 and consumes 35.6 to 52.62 mW of power. Measurement results show that the synthesizer is able to provide in-phase and quadrature-phase (I/Q) signals supporting the standards mentioned above.

Original languageEnglish (US)
Article number5772989
Pages (from-to)1307-1320
Number of pages14
JournalIEEE Journal of Solid-State Circuits
Volume46
Issue number6
DOIs
StatePublished - Jun 2011
Externally publishedYes

Keywords

  • Automatic frequency control
  • QVCO
  • frequency synthesizer
  • harmonic rejection
  • multi-standard wireless communication
  • phase noise
  • single sideband mixer

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'A frequency synthesizer with optimally coupled QVCO and harmonic-rejection SSBmixer for multi-standard wireless receiver'. Together they form a unique fingerprint.

Cite this