论文部分内容阅读
详细论述了一种具有极低功耗和高本振抑制的发射机,该发射机是射频收发芯片的重要组成部分,它起到将低频基带信号转化成射频信号,并以一定的功率发射出去的作用,由于其结构简单易于实现,具有较高的可靠性,所以可以大规模量产和使用。该发射机适用于时分同步码分多址接入(TD-SCDMA)系统并集成了电阻阵列衰减器(R2R),极大的降低了发射机的功耗。同时,该发射机采用了直流(DC)校正模块,可以极大的改善本振抑制并输出高质量的射频信号。
A transmitter with extremely low power consumption and high LO suppression is discussed in detail. The transmitter is an important part of RF transceiver chip. It plays the role of converting low-frequency baseband signals into RF signals and transmitting them with a certain power , Because of its simple and easy to implement structure, with high reliability, so mass production and use. The transmitter is suitable for TD-SCDMA system and integrates resistor array attenuator (R2R), which greatly reduces the power consumption of the transmitter. At the same time, the transmitter uses a DC correction module, which can greatly improve LO suppression and output high quality RF signals.