A 5 GHz quadrature relaxation oscillator with mixing for improved testability or compact front-end implementation

Luis Bica Oliveira; Chris Van Den Bos; Jorge R. Fernandes; Chris J. M. Verhoeven; Manuel M. Silva

doi:10.1002/cta.562

A 5 GHz quadrature relaxation oscillator with mixing for improved testability or compact front-end implementation

Luis Bica Oliveira, Chris Van Den Bos, Jorge R. Fernandes, Chris J. M. Verhoeven, Manuel M. Silva

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

Abstract

We demonstrate by measurements on a test circuit that a 5 GHz relaxation oscillator with accurate quadrature outputs and low phase-noise can be obtained, and that these favorable properties can be preserved while the mixing function is performed by this oscillator. This is useful either to measure the quadrature error at a low frequency, or to implement a low-intermediate frequency (IF) or zero-IF (homodyne) radio frequency front-end.

Original language	English
Pages (from-to)	359-366
Number of pages	8
Journal	International Journal of Circuit Theory and Applications
Volume	38
Issue number	4
DOIs	https://doi.org/10.1002/cta.562
Publication status	Published - 2010

Keywords

Low-IF receivers
Mixer
Quadrature error measurement
Quadrature oscillator
Relaxation oscillator

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10.1002/cta.562

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abstract = "We demonstrate by measurements on a test circuit that a 5 GHz relaxation oscillator with accurate quadrature outputs and low phase-noise can be obtained, and that these favorable properties can be preserved while the mixing function is performed by this oscillator. This is useful either to measure the quadrature error at a low frequency, or to implement a low-intermediate frequency (IF) or zero-IF (homodyne) radio frequency front-end.",

keywords = "Low-IF receivers, Mixer, Quadrature error measurement, Quadrature oscillator, Relaxation oscillator",

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AU - Fernandes, Jorge R.

AU - Verhoeven, Chris J. M.

AU - Silva, Manuel M.

PY - 2010

Y1 - 2010

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AB - We demonstrate by measurements on a test circuit that a 5 GHz relaxation oscillator with accurate quadrature outputs and low phase-noise can be obtained, and that these favorable properties can be preserved while the mixing function is performed by this oscillator. This is useful either to measure the quadrature error at a low frequency, or to implement a low-intermediate frequency (IF) or zero-IF (homodyne) radio frequency front-end.

KW - Low-IF receivers

KW - Mixer

KW - Quadrature error measurement

KW - Quadrature oscillator

KW - Relaxation oscillator

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ER -

A 5 GHz quadrature relaxation oscillator with mixing for improved testability or compact front-end implementation

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Keywords

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