| 摘要 |
This invention provides for separating undesired signals from spectra of desired signals in a communication system. Specifically, a communication system for transmitting and receiving spectra of signals having undesired signals and desired signals comprising: a transceiver system; a TEE-junction coupled to the transceiver system and having first and second ports, the undesired and desired signals being separated at the TEE-junction; an Off-line signal interference reduction device coupled to the first port, the Off-line signal interference reduction device receiving the undesired signals from the first port; and an In-line signal interference reduction device coupled to the second port and an antenna system. The Off-line signal interference reduction device connected to the TEE-junction of the communication system for shunting undesired signals included: a SIRD switch coupled to the TEE-junction for selectively coupling the Off-line signal interference reduction device; a main load coupled to a ground for dissipating the undesired signals; and a filtering system coupled between the SIRD switch and the main load. The In-line interference reduction device comprises: a first SIRD switch having first and second terminals and coupled to the TEE-junction; a second SIRD switch having first and second terminals and coupled to the antenna system; a filtering system having a plurality of filtering channels connected between the first and second SIRD switches; and a signal line connected between the first terminals of the first and second SIRD switches, wherein the filtering system is connected between the second terminals of the first and second SIRD switches, the SIRD switches for selectively bypassing the filtering system by coupling the TEE-junction and the antenna through the signal line.
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