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首页> 外文期刊>IEEE Journal of Solid-State Circuits >A single-chip tuner for DVB-T
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A single-chip tuner for DVB-T

机译:DVB-T的单芯片调谐器

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A new architecture is presented for a single-chip tuner for digital terrestrial television, based on existing double conversion and direct conversion topologies. The new design forms part of a mixed-signal Digital Video Broadcasting-Terrestrial (DVB-T) receiver system, employing digital signal processing at baseband to ensure minimal performance requirements for the analog circuitry. To evaluate the potential performance of this new tuner/receiver system, high-level system simulations have been performed, followed by the construction of a prototype DVB-T receiver using a custom-designed analog ASIC which integrates all analog tuner blocks (including channel filtering) on one chip. Measured results from this chip, implemented in a 20-GHz bipolar technology, show an overall third-order input referred intercept point of 116 dB/spl mu/V, a noise figure of 14 dB and an automatic gain control range of 71.4 dB, drawing 250 mA at a 5-V supply.
机译:基于现有的双转换和直接转换拓扑,提出了一种用于数字地面电视的单芯片调谐器的新架构。新设计构成了地面混合信号数字视频广播(DVB-T)接收器系统的一部分,该系统在基带采用数字信号处理以确保对模拟电路的最低性能要求。为了评估这种新型调谐器/接收器系统的潜在性能,已进行了高级系统仿真,然后使用定制设计的模拟ASIC构建了DVB-T接收器原型,该模拟ASIC集成了所有模拟调谐器模块(包括通道滤波) )放在一个芯片上。该芯片采用20 GHz双极技术实现的测量结果显示,整体三阶输入参考截点为116 dB / spl mu / V,噪声系数为14 dB,自动增益控制范围为71.4 dB,在5V电源下消耗250 mA的电流。

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