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For the DECT telephone system, a zero-IF front-end Integrated Circuit (UAA2078) has been designed in Philips' high speed QUBIC BiCMOS process. This IC contains all RF circuits required to directly down-convert the RF signal to the IF frequency around zero. At these high frequencies (1.8 GHz), it is advantageous to use flip-chip as mounting technique. Wide-band measurements of the input impedance showed...
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