A novel superharmonic coupling topology for quadrature oscillator design at 6 GHz

Author

Hancock, Timothy M. ; Rebeiz, Gabriel M.

Author_Institution

Radiat. Lab., Michigan Univ., Ann Arbor, MI, USA

fYear

2004

fDate

6-8 June 2004

Firstpage

285

Lastpage

288

Abstract

This paper presents the design and measurement of a quadrature voltage controlled oscillator (VCO) at 6 GHz in a SiGe process. Phase quadrature is achieved by using a novel coupling scheme that is area efficient, does not increase power consumption and decreases the phase-noise by 3 dB. The QVCO has a 24% tuning range with a maximum output frequency of 5.92 GHz and an average output power of -5.3 dBm. The QVCO is compact, occupying an area of only 810 μm×485 μm without pads. A single VCO, identical to the core of the QVCO, was also designed and measured for comparison.

Keywords

Ge-Si alloys; MMIC oscillators; circuit tuning; coupled circuits; harmonic oscillators (circuits); injection locked oscillators; phase noise; semiconductor materials; voltage-controlled oscillators; 485 micron; 5.92 GHz; 6 GHz; 810 micron; ILO; QVCO tuning range; SiGe; VCO; injection locked oscillators; phase quadrature; phase-noise; quadrature voltage controlled oscillator; superharmonic coupling topology; Coupling circuits; Energy consumption; Frequency; Germanium silicon alloys; Injection-locked oscillators; Passive networks; Silicon germanium; Topology; Tuning; Voltage-controlled oscillators;

fLanguage

English

Publisher

ieee

Conference_Titel

Radio Frequency Integrated Circuits (RFIC) Symposium, 2004. Digest of Papers. 2004 IEEE

ISSN

1529-2517

Print_ISBN

0-7803-8333-8

Type

conf

DOI

10.1109/RFIC.2004.1320597

Filename

1320597