Patent ID: 7236802
Filing Date: 2007-06-26
Classification: H03F,H04B

Abstract:
1. A coupling device for coupling an electronic circuit to at least one antenna unit to exchange electrical signals between the electronic circuit and the at least one antenna unit, comprising: a) first input/output terminals connected to the electronic circuit by a first input/output signal path; b) a matching unit coupled to the first input/output terminals by a first signal path for performing an impedance matching with respect to the electrical signals; c) a filter unit coupled to the output of the matching unit by a second signal path for filtering the electrical signals; and d) second input/output terminals connected to the filter unit and the at least one antenna unit by a second input/output signal path, wherein e) the signal paths arranged between the electronic circuit and the at least one antenna unit are provided completely differential, and f) the matching unit includes a differentially arranged matching network.