A Low-Power RF Direct-Conversion Receiver/Transmitter for 2.4-GHz-Band IEEE 802.15.4 Standard in 0.18- $\mu{\hbox {m}}$ CMOS Technology
A Low-Power RF Direct-Conversion Receiver/Transmitter for 2.4-GHz-Band IEEE 802.15.4 Standard in 0.18- $\mu{\hbox {m}}$ CMOS Technology
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发表时间：
2006
影响因子：
4.3
通讯作者：
Student Member Ieee Trung-Kien Nguyen;V. Krizhanovskii;Jeong-Seon Lee;Seok-Kyun Han;Member Ieee Sang-Gug Lee
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文献类型：
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作者：
Student Member Ieee Trung-Kien Nguyen;V. Krizhanovskii;Jeong-Seon Lee;Seok-Kyun Han;Member Ieee Sang-Gug Lee
本文提出了一种基于0.18 μ m CMOS技术的2.4 ghz频段IEEE 802.15.4标准的低功耗射频接收/发送前端。一种射频接收机包括单端低噪声放大器、正交无源混频器和跨阻放大器。采用具有良好1/f噪声性能的电流型无源混频器将射频信号直接转换为基带信号。此外，这种类型的无源混频器显示出高线性性能，导致整体RF接收器线性度的改善。采用无源混频器和两级驱动放大器实现了低功耗、高线性度的发射器前端，其中第一级是传统级联放大器，第二级使用折叠级联放大器。接收机前端实现30db电压转换增益，7.3 db噪声系数，1/f噪声角频率为70khz， - 8dbm输入三阶截距点，+ 40dbm输入二阶截距点。发射机前端显示12db功率转换增益，0-dBm输出功率，10dbm输出三阶截距，- 30db本地振荡器抑制。接收器和发射器前端分别从1.8 v电源耗散3.5 mA和3 mA
This paper presents a low-power RF receiver/transmitter front-end for 2.4-GHz-band IEEE 802.15.4 standard in 0.18-mum CMOS technology. An RF receiver comprises a single-ended low-noise amplifier, a quadrature passive mixer, and a transimpedance amplifier. A current-mode passive mixer showing a very good 1/f noise performance is adopted to convert an RF signal directly to a baseband signal. Moreover, this type of passive mixer shows high-linearity performance, leading to overall RF receiver linearity improvement. A low-power, high-linearity transmitter front-end is implemented by using a passive mixer and two-stage driver amplifier in which the first stage is a conventional cascode amplifier and the second stage uses a folded cascode one. The receiver front-end achieves 30-dB voltage conversion gain, 7.3-dB noise figure with 1/f noise corner frequency of 70 kHz, -8-dBm input third-order intercept point, and +40-dBm input second-order intercept point. The transmitter front-end shows 12-dB power conversion gain, 0-dBm output power with 10-dBm output third-order intercept point, and -30-dB local-oscillator suppression. The receiver and transmitter front-end dissipate 3.5 and 3 mA from a 1.8-V supply, respectively