| 摘要 |
A frequency division (FD) multiplexing device includes a multiplexer including a band-pass and a band-stop filter, the multiplexer is communicatively coupled to an antenna, the band-pass filter is configured to allow pass band frequencies to pass un-attenuated and to attenuate signals outside of the pass band. The band-stop filter is configured to attenuate signals at frequencies in at least a portion of the pass-band and allow frequencies outside the pass-band to pass un-attenuated. The multiplexing device further includes filters communicatively coupled to the multiplexer to receive first and second receive signals in first and second receive bands, where the first and second receive filters attenuate signals at frequencies outside of the first and second receive bands, respectively, and first and second transmit filters attenuate signals at frequencies outside a first transmit band and signals at frequencies outside a second transmit band, and couple the first and second filtered transmit signals to the multiplexer such that the first and second transmit signals are transmitted via the antenna. At least one of the first receive band and the first transmit band are located in the pass-band and intermingled between the second receive band and the second transmit band. |
