Olli Mylläri

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Nowadays, the direct-conversion and the low-IF transceiver principles are seen as the most promising architectures for future flexible radios. Both of the architectures employ complex I/Q mixing for up- and downconversion. Consequently, the performance of the transceiver architectures can be seriously deteriorated by the phenomenon called I/Q imbalance. I/Q(More)
Communication transceivers utilizing the inphase/ quadrature (I/Q) up- and down-conversion principle face a common problem of amplitude and phase mismatch. These mismatches result in the generation of an image signal and thus, cause mirror-frequency interference. Moreover, quadrature modulation/demodulation errors also affect the performance of(More)
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