Active radio aerial for motor vehicle - has extra filters designed to prevent unwanted signals from entering given signal paths
摘要
<p>The active radio aerial is fitted on a motor vehicle. It has the passive circuit of the passive art of the aerial provided with additional filters which protect the inputs of one or both radio paths against the entry of signals from one or more further radio services. The additional filters are arranged so that they acts as a capacitance connected parallel to the input of the transmission path of the long, medium and short wave bands. One or more additional transmission parths for signals from other radio services outside the band can be connected to these filters.</p>
