| 摘要 |
<p>The invention relates to apparatus for use in the passage therethrough of data from a plurality of data streams such as those transmitted by satellite. The apparatus includes a set of n input ports and a set of n output ports and channels which connect said input and output ports. Each of the ports in one of the said sets of ports provides data for one of the said data streams and the said channels are configured and joined such that each of the ports in the other of the set of ports provides data for all of the said data streams. The said channels are joined intermediate the respective input and output ports by at least one hybrid coupler in a first plane and at least one hybrid coupler in a second plane so as to minimise the size and weight of the apparatus whilst ensuring the data transfer is achieved.</p> |
