| 摘要 |
<p>A system having a transmit path and a receive path coupled to an antenna includes a cryostat, a receive filter disposed in the cryostat, a transmit filter disposed outside of the cryostat and in the transmit path, and a coupler that couples the antenna and the receive filter. The coupler includes a phase-adjusting portion disposed in the cryostat to provide duplexing functionality. The receive path includes the filter and the phase-adjusting portion of the coupler.</p> |
