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    • 1. 发明申请
    • A COMMUNICATION TRANSMITTER AND METHOD
    • 通信发射机和方法
    • WO2016202371A1
    • 2016-12-22
    • PCT/EP2015/063511
    • 2015-06-17
    • HUAWEI TECHNOLOGIES CO., LTD.REGEV, DrorSHILO, ShimiEZRI, DoronBOON, Chirn ChyeYI, XiangZHANG, JunpingHU, GengenLIANG, DongMIAO, Yannan
    • REGEV, DrorSHILO, ShimiEZRI, DoronBOON, Chirn ChyeYI, XiangZHANG, JunpingHU, GengenLIANG, DongMIAO, Yannan
    • H04B1/04
    • H04B1/0475
    • The invention relates to a communication transmitter (100) for transmitting a communication signal including a plurality of frequency channels, the plurality of frequency channels comprising a first frequency channel situated around a frequency f RF1 and a second frequency channel situated around a frequency f RF2 and defining a mutual spectral range of interest having a spectral bandwidth Δf and being situated around a frequency f RF . The communication transmitter (100) comprises: a first modulator (103a) being configured to modulate a first base band frequency channel on the basis of a first local oscillator frequency f LO1 to obtain a first modulated signal including the first frequency channel; a second modulator (103b) being configured to modulate a second base band frequency channel on the basis of a second local oscillator frequency f LO2 to obtain a second modulated signal including the second frequency channel; a first combiner (105) being configured to add the first modulated signal and the second modulated signal to obtain a combined modulated signal; and a mixer (107) being configured to mix the combined modulated signal with a periodic mixing signal having a mixing frequency f c for generating the communication signal, wherein the communication signal comprises the down-converted first frequency channel of the combined modulated signal and the up- converted second frequency channel of the combined modulated signal. A particular merit of this invention is its superior immunity to LO pulling and crosstalk that impair the performance of prior art parallel processing transmitters.
    • 本发明涉及一种用于发送包括多个频率信道的通信信号的通信发射机(100),所述多个频率信道包括位于频率fRF1周围的第一频率信道和围绕频率fRF2定义的第二频率信道 感兴趣的相互光谱范围具有光谱带宽Δf并且位于频率fRF周围。 通信发射机(100)包括:第一调制器(103a),被配置为基于第一本地振荡器频率fLO1来调制第一基带频道,以获得包括第一频率信道的第一调制信号; 第二调制器(103b)被配置为基于第二本地振荡器频率fLO2来调制第二基带频率信道,以获得包括第二频率信道的第二调制信号; 第一组合器(105)被配置为添加第一调制信号和第二调制信号以获得组合调制信号; 以及混合器(107),其被配置为将组合的调制信号与具有用于产生通信信号的混频器fc的周期性混频信号混合,其中通信信号包括组合调制信号的下变频第一频道和上 - 转换的组合调制信号的第二频道。 本发明的特别优点在于其对于LO牵引和串扰的优越的抗扰性,这削弱了现有技术的并行处理发射机的性能。