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    • 2. 发明申请
    • DUAL ANTENNA DISTRIBUTED FRONT-END RADIO
    • 双天线分布式前端无线电
    • WO2012129238A2
    • 2012-09-27
    • PCT/US2012029825
    • 2012-03-20
    • QUALCOMM INCWEISSMAN HAIM MBRILLANT AVIGDORMANSOUR RIMONFONG GENE
    • WEISSMAN HAIM MBRILLANT AVIGDORMANSOUR RIMONFONG GENE
    • H04B1/04H04B1/10
    • H04B1/0458H04B1/0057H04B1/109H04B1/406
    • Certain aspects of the present disclosure provide a dual antenna distributed radio frequency front end (RFFE). RFFE topologies described herein may provide lower insertion loss (IL), reduced emission mask, decreased power consumption, and/or lower noise figure (NF) compared to conventional RFFE topologies. One example apparatus for wireless communications generally includes first and second power amplifiers (PAs) for amplifying signals for transmission, a transmit antenna for transmitting the amplified signals, a receive antenna for receiving other signals to be processed in a receive path, and a first transmit filter configured to filter the amplified signals from the first PA before amplification by the second PA. For certain aspects, a divided inter-stage filter providing overlapping frequency bands may be utilized. For certain aspects, the RFFE may support frequency-division duplexing (FDD)/TDD (time-division duplexing) coexistence, including support for FDD/TDD MIMO (multiple input multiple output).
    • 本公开的某些方面提供了一种双天线分布式射频前端(RFFE)。 与常规RFFE拓扑相比,本文所述的RFFE拓扑可以提供较低的插入损耗(IL),减少的发射掩模,降低的功率消耗和/或较低的噪声系数(NF)。 用于无线通信的一个示例性装置通常包括用于放大用于传输的信号的第一和第二功率放大器(PA),用于发射放大的信号的发送天线,用于接收在接收路径中要处理的其它信号的接收天线和第一发射 滤波器被配置为在由第二PA放大之前对来自第一PA的放大信号进行滤波。 对于某些方面,可以使用提供重叠频带的划分的级间滤波器。 对于某些方面,RFFE可以支持频分双工(FDD)/ TDD(时分双工)共存,包括对FDD / TDD MIMO(多输入多输出)的支持。