NDLI: A simple IQ-regeneration technique for six-port communication receivers

Content Provider	IEEE Xplore Digital Library
Author	Hentschel, T.
Copyright Year	2004
Description	Author affiliation: Technische Univ. Dresden, Germany (Hentschel, T.)
Abstract	Modern radio terminals for high data rate communication require wideband receivers. The well-known receiver architectures, such as zero-IF-receivers usually require very accurate component matching. In order to relax these requirements digital techniques are used on one side. On the other side alternative receiver architectures such as the six-port are investigated. The six-port has been introduced as a very flexible and elegant means for microwave measurements in the 1960s and 1970s. Later on it has been used in radar applications. It was not until recently that communication receivers have been built upon the six-port principle. In order to generate the required IQ-signal from the output signals of a six-port, knowledge of the six-port structure and/or of the signal statistics must be available. The first can be obtained by means of calibration procedures, while the latter can be used in blind techniques. Classical calibration procedures employ probes that are connected to the six-port. This is not applicable in communication receivers. Alternatively, a method is presented that uses the incoming signal as the calibration-driving probe and moreover uses the fact that the I-component and the Q-component of the signal are uncorrelated in most practical scenarios.
Sponsorship	IEEE IEEE Finland Section IEEE SP/CAS Chapter, Finland EURASIP UCSB Tampere Univ. of Technol. Ecole Superieure des Sciences et Techniques de Tunis, ESSTT, Univ. of Manouba
Starting Page	311
Ending Page	314
File Size	421050
Page Count	4
File Format	PDF
ISBN	0780383796
DOI	10.1109/ISCCSP.2004.1296288
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-03-21
Publisher Place	Tunisia
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Radio frequency Costs Filters Surface acoustic waves Receivers Modems Calibration Probes Wideband Microwave measurements
Content Type	Text
Resource Type	Article

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