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首页> 外文期刊>IEEE Journal of Solid-State Circuits >A wide-band linear amplitude modulator for polar transmitters based on the concept of interleaving delta modulation
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A wide-band linear amplitude modulator for polar transmitters based on the concept of interleaving delta modulation

机译:基于交织增量调制概念的极性发射机宽带线性幅度调制器

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摘要

Polar transmission techniques offer the capability of multimode wireless transmission and the potential for significant efficiency gains over solutions based on I/Q. However, polar transmitters are difficult to implement because of the wide bandwidths associated with the phase and envelope signals. Moreover, accurate synchronization between envelope and phase components is essential in minimizing distortion. A concept named Interleaving Delta Modulation (iDM) is proposed to overcome some of the issues associated with polar transmission. IDM minimizes distortion and improves efficiency by replacing a stream of fast drive pulses to the amplitude modulator with a parallel stream of slower pulses. Circuitry to implement iDM has been designed, fabricated, and measured in 0.35-Μm CMOS technology.
机译:与基于I / Q的解决方案相比,极性传输技术提供了多模式无线传输的功能,并具有显着提高效率的潜力。然而,由于与相位和包络信号相关联的宽带宽,极地发射机难以实现。此外,包络和相位分量之间的精确同步对于最小化失真至关重要。提出了一种名为交错增量调制(iDM)的概念,以克服与极性传输相关的一些问题。 IDM通过将并行的较慢脉冲流替换为幅度调制器的快速驱动脉冲流,将失真最小化并提高了效率。已经以0.35-μmCMOS技术设计,制造并测量了实现iDM的电路。

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