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首页> 外文期刊>IEEE Journal of Solid-State Circuits >A 20 mW 3.24 mm2 Fully Integrated GPS Radio for Location Based Services
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A 20 mW 3.24 mm2 Fully Integrated GPS Radio for Location Based Services

机译:20 mW 3.24 mm2完全集成GPS无线电,用于基于位置的服务

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The challenges in the co-existence of a GPS receiver with cellular phones for location based services are addressed in this paper. A fully integrated GPS radio, realized in a 0.18 mum SiGe technology, demonstrates a 1 dB gain desensitization at 1.9 GHz of -8 dBm, a noise figure of 5 dB, with 20 mW power consumption. Chip area is 3.24 mm2 . The receiver includes a highly selective LNA, key to minimize desensitization and reciprocal mixing due to the large cellphone leakage, a novel quadrature VCO topology capable of directly driving quadrature passive mixer with high swing and low power consumption, complex bandpass filter, variable gain amplifier, automatic gain control, 2-bit quantizer, and a fractional-N sigma-delta-based PLL that can lock to any crystal frequency
机译:本文解决了GPS接收器与蜂窝电话共存以提供基于位置的服务所面临的挑战。采用0.18微米SiGe技术实现的完全集成的GPS无线电,在1.9 GHz时的-8 dBm增益衰减为1 dB,噪声系数为5 dB,功耗为20 mW。切屑面积为3.24 mm2。该接收器包括一个高度选择性的LNA,用于最大程度地减少由于大量手机泄漏而引起的脱敏和相互混频的关键,一种新颖的正交VCO拓扑结构,能够直接驱动具有高摆幅和低功耗的正交无源混频器,复杂的带通滤波器,可变增益放大器,自动增益控制,2位量化器和基于小数NΣ-Δ的PLL,可以锁定任何晶体频率

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