⚡ 本页包含 AI 生成的分析内容，仅供参考
该论文提出了一种全数字多模极性发射机架构，采用17位RF DAC，支持3G模式，旨在降低多模多频段手机的成本和尺寸。通过全数字方式实现极性调制，解决了传统模拟发射机在集成度和灵活性上的局限。
Jose Moreira1, Hans Geltinger1, Timo Gossmann1, Peter Pfann1, Alexander Belitzer1, Thomas Bauernfeind3 1 Infineon Technologies, Neubiberg, Germany, Infineon Technologies, Villach, Austria, 3DICE, Linz, Austria 2 The constantly growing quest for global roaming with a fast mobile internet access has further increased demand for multiband 3G cell phones supporting also 2G/2.5G standards, in order to provide full coverage any time, any place. In order to substantially reduce cost and size of the multimode, multiband handsets, it is necessary to develop a transmitter architecture that enables use of a multimode, multiband power amplifier, a key prerequisite to substantially reduce the number of external components, pins count, and PCB area, while at the same time significantly lowering power consumption. A direct quadrature voltage modulator has been disclosed in [1] and current mode upconversion mixer with linearity boosting technique in [2] as preferred
Zdravko Boos1, Andreas Menkhoff1, Franz Kuttner2, Markus Schimper1,