低功耗/噪声发射LTE全A/B类发射机，具有可编程输出平衡

2014 21st IEEE International Conference on Electronics, Circuits and Systems (ICECS) Pub Date : 2014-12-01 DOI:10.1109/ICECS.2014.7050107

Elisa Girard, Nicola Codega, R. Castello

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引用次数: 0

摘要

介绍了一种适用于多标准无线通信(包括LTE)的电流模式发射机。为了限制电流消耗和rx波段噪声，遵循完整的a /B类方法(从DAC到上变频器)。该电路由三部分组成:基带包括B类DAC和二阶低通滤波器(有源一阶和无源一阶)，并结合a /B类上转换器。对于LTE10，电流消耗(来自1.8V稳压电源)在输出功率为0dBm时分别为47.5mW和-6dBm时分别为27.37mW。完整的发射机在30MHz偏移(LTE 10的频段5)下提供-160.5dBc/Hz的rx波段噪声注入。

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A low power/noise emission LTE fully class A/B transmitter with a programmable output balun

A current-mode transmitter for multi-standard wireless communications (including LTE) is presented. To limit both current consumption and RX-band noise a complete class A/B approach (from the DAC to the up-converter) is followed. The circuit is made up of three portions: a baseband that includes class B DAC and a second order low-pass filter (an active first order and a passive first order) combined with a class A/B up-converter. For LTE10 the current consumption (from a 1.8V regulated supply) is 47.5mW at 0dBm and 27.37mW at -6dBm output power respectively. The complete transmitter gives -160.5dBc/Hz RX-band noise injection at 30MHz offset (band 5 for LTE 10).

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来源期刊

2014 21st IEEE International Conference on Electronics, Circuits and Systems (ICECS)

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