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首页> 外文期刊>IEEE Journal of Solid-State Circuits >A direct-conversion CMOS transceiver for the 802.11a/b/g WLAN standard utilizing a Cartesian feedback transmitter
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A direct-conversion CMOS transceiver for the 802.11a/b/g WLAN standard utilizing a Cartesian feedback transmitter

机译:使用笛卡尔反馈发送器的802.11a / b / g WLAN标准的直接转换CMOS收发器

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摘要

A fully integrated dual-band transceiver is implemented in 0.18-Μm CMOS and is compliant with the IEEE 802.11a/b/g standards. The direct-conversion transceiver occupies 12 mm2 in a QFN-40 package. A fractional-N synthesizer operates at twice the channel frequency, covering continuously bands from 4.9 to 5.9 GHz, as well as the 2.4-GHz band. The 5- and 2.4-GHz receivers achieve a sensitivity level below -73 dBm in the 54-Mb/s mode and below -93 dBm in the 6-Mb/s mode, while consuming 230 mW. A fast RSSI-channel power-detection system allows to power-down signal processing in the listen mode. The 5- and 2.4-GHz transmitters implement a wideband Cartesian feedback loop for enhanced EVM performances and improved spectrum masks compliance. The transmitters deliver -2-dBm average power with an EVM of 3% in the 54-Mb/s mode while consuming 300 mW.
机译:完全集成的双频段收发器以0.18-μmCMOS实现,并符合IEEE 802.11a / b / g标准。采用QFN-40封装的直接转换收发器占地12 mm2。 N分频合成器的工作频率是信道频率的两倍,覆盖了4.9至5.9 GHz的连续频带以及2.4 GHz频带。 5 GHz和2.4 GHz接收机在54 Mb / s模式下的灵敏度水平低于-73 dBm,在6 Mb / s模式下的灵敏度水平低于-93 dBm,同时消耗230 mW。快速的RSSI信道功率检测系统允许在监听模式下关闭信号处理。 5 GHz和2.4 GHz发射机实现了宽带笛卡尔反馈环路,以增强EVM性能并改善频谱模板的合规性。在54 Mb / s模式下,发射器以EVM为3%的方式提供-2-dBm平均功率,同时消耗300 mW。

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