Vesa Lehtinen

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In frequency division duplex transceivers employing non-contiguous carrier aggregation (CA) transmission, achieving sufficient isolation between transmit and receive chains using radio frequency filtering alone is increasingly difficult. Particularly challenging problem in this context is spurious intermodulation (IM) components due to nonlinear power(More)
Multistage implementation of decimators is in many cases more efficient than single-stage one. However, if the decimation ratio is prime, it cannot be factorised into a product of smaller integer factors. Previously it has been proposed that a rational decimation stage can be used to enable arbitrary selection of the decimation ratios. This way the(More)
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