Ubidyne, Inc.

Ingeborg Sigrid Ilse-Dore Korte-Gericke, Legal Representative

Clemens Rheinfelder

Werner Korte

Digital Transceiver (DTRX) usable in a radio communications systems for transmitting and receiving digital base-band signals, wherein the DTRX () comprises: at least one digital up-converter (DUC) () for transmitting digital base-band signals and at least one digital down-converter for receiving digital base-band signals. In one aspect of the teachings disclosed herein the DUC () comprises at least two over-sampling units (), at least one quadrature modulation unit (), and at least one time-discrete sigma delta band-pass modulator (). The digital down-converter comprises at least one quadrature demodulation unit (), at least two decimator units (), and at least two sub-sampling units (). The digital base-band signal comprises an in-phase component (I-signal) and a quadrature component (Q-signal).

Digital transceiver

A digital sigma-delta modulator () for modulating a digital input signal (x) is described. The digital sigma-delta modulator () comprises a quantizer () for quantizing an input signal (s) and producing a quantized output signal (y) at a first output () and an error output signal (&#x2212;q) at a second output (), at least one feedback loop () connected to an input adder () and the first outputs () and the second output () of the quantizer () and a feedback filter () in the at least one feedback loop (). The input adder () produces the sum signal (s) by adding the digital input signal (x) at an input () and output signals of the at least one feedback loop filters ().

Growing community of inventors

Eschwege, Germany

Ingeborg Sigrid Ilse-Dore Korte-Gericke, Legal Representative