| 摘要 |
<p>A switchable integrated electronic device comprises at least three elements r1..r14, S1..S14 serially coupled in a chain between a first port (22, 24) and a second (16, 18) and comprises a node between successive elements r1..r14, S1..S14 of the chain. There is a switch means (30, 50) for coupling a selectable one of the nodes to a third port (12, 14). If successive elements r1..r14, S1..S14 in the chain are denoted ri, i=1 to N, and if adjacent positions occupied by the elements are numbered consecutively 1 to N, then element ri occupies position (Formula AA) for i=1 to (Formula BB) and position (Formula CC) for (Formula DD) to N.</p> |
