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System-Level Compensation Approach to Overcome Signal Saturation, DC Offset, and 2nd-Order Nonlinear Distortion in Linear Direct Conversion Receiver

Hiroshi TSURUMI, Miyuki SOEYA, Hiroshi YOSHIDA, Takafumi YAMAJI, Hiroshi TANIMOTO, Yasuo SUZUKI

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Summary :

The architecture and control procedure for a direct conversion receiver are investigated for a linear modulation scheme. The proposed design techniques maintain receiver linearity despite various types of signal distortion. The techniques include the fast gain control procedure for receiving a control channel for air interface connection, DC offset canceling in both analog and digital stages, and 2nd-order intermodulation distortion canceling in an analog down-conversion stage. Experimental and computer simulation results on PHS (Personal Handy-phone System) parameters, showed that required linear modulation performance was achieved and thus the applicability of the proposed techniques was demonstrated.

Publication
IEICE TRANSACTIONS on Electronics Vol.E82-C No.5 pp.708-716
Publication Date
1999/05/25
Publicized
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DOI
Type of Manuscript
Special Section PAPER (Special Issue on Low Distortion Technology for Microwave Devices and Circuits)
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