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提出了一种基于IQ单元共享的高效数字正交发射机架构，通过共享数字I/Q路径中的单元来减少面积和功耗，同时保持调制精度。解决了传统数字发射机中I/Q路径独立导致面积大、效率低的问题。
employ various modulation methods in various frequency bands, interest in the software-defined radio (SDR) transceiver to support the standards is increasing. For the flexible transceiver, a digital-intensive transmitter has many advantages and has been pursued intensively. The efficiency of the transmitter chain is strongly dependent on the PA, and switching PAs, such as Class-D and F PAs, are used due to their high efficiency. A polar transmitter is suited for the switching operation and receives a large attention. However, a CORDIC is needed for I/Q-to-Polar conversion, and it is very complex. Moreover, the polar signal has a large bandwidth compared to the I/Q signal bandwidth. On the contrary, the quadrature transmitter that
Hadong Jin1, Dongsu Kim2, Sangsu Jin1, Hankyu Lee1,
Kyunghoon Moon1, Huijung Kim2, Bumman Kim1 Pohang University of Science and Technology, Pohang, Korea Samsung Electronics, Hwaseong, Korea 1 2 As new complex communication standards