Frank Henkel

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A fully re-configurable channel select filter is presented which is used as a part of a multi mode direct conversion receiver. The filter supports different modes including GSM, IS-95, and UMTS. A 4 th order Butterworth filter is realized in a g m C filter topology. The filter circuit is implemented in a standard 0.35 µm CMOS process. The filter is able to(More)
Concepts and techniques for re-configurability in mobile wireless terminals are presented which can be used in future SDR terminals. The techniques are used to obtain a multi-mode operation, so that a mobile terminal can support different wireless standards with the same hardware platform. This is demonstrated first by using UMTS and its extension as well(More)
With the objective of designing a transceiver IC for multi mode operation, the RF requirements for the whole transceiver from antenna to baseband are derived from the UMTS-and GSM-standards. The RF-parameters found for the overall system are broken down to building block level. The boundary conditions for the transceiver IC were defined using specifications(More)
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