Switchable Direct-Conversion Receiver for 2GHz and 5GHzwith Sub-harmonic Mixer

被引：0
|
作者：
Lee, Mi-young [1 ]
机构：
[1] Hannam Univ, Dept Elect Engn, Daejon 306791, South Korea
来源：
INTERNATIONAL JOURNAL OF FUTURE GENERATION COMMUNICATION AND NETWORKING | 2016年 / 9卷 / 08期
关键词：
Switchable DCR; Frequency synthesizer; VCO; Sub-harmonic mixing;
D O I：
10.14257/ijfgcn.2016.9.8.10
中图分类号：
TN [电子技术、通信技术];
学科分类号：
0809 ;
摘要：
This paper reports on a fully-integrated CMOS switchable direct-conversion receiver for 2GHz, 5GHz. Switchable low noise amplifier is proposed for suiting for multiband (2GHz, 5GHz). Sub-harmonic mixing is used for down-conversion to minimize the DC-offset due to LO-leakage. The residual DC-offset is cancelled by a digital-to-analog converter at the output of mixer. For quadrature down-conversion with sub-harmonic mixing, octa-phase LO signals are generated by an integer-N type frequency synthesizer. Implemented in a 0.18m CMOS technology, the receiver dissipates 97mA from a 1.8V supply voltage and has 6.5dB noise figure (NF) and -4dBm input third-order intercept point (iIP3). The phase noise of the closed-loop VCO is -108dBc/Hz at 1MHz offset.
引用
收藏
页码：99 / 110
页数：12
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