| 摘要 |
The present invention concerns a circuit arrangement (1) comprising an antenna port (6), a first receiving port (3), a second receiving port (5), a first transmission port (3), a second transmission port (4),90 degree hybrids (7, 8, 9, 10, 1) being configured to transfer an input signal into two output signals that are phase shifted relative to each other, and two quadplexers (12, 13), wherein each quadplexer (12, 3) comprises a first duplexer (14) and a second duplexer (15),wherein the quadplexers (12, 13) and the 90 degree hybrids (7, 8, 9, 10, 11) are interconnected such that a leakage signal travelling from one of the transmission ports (2, 4) to one of the receiving ports (3, 5) destructively interferes at the receiving port (3, 5). |
