Ja-yol Lee, Kwi-Dong Kim, Jong-Kee Kwon, Seung-Chul Lee, Jongdae Kim, Sang-Heung Lee
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引用次数: 10
摘要
在本文中，我们提出了一个3.8-5.5 GHz多波段CMOS频率合成器，用于WLAN和UWB应用。在多频带频率合成器中，提出了新型多模预分频器和自适应多频带LC压控振荡器。所提出的多模预分频器产生除2/3、4/5、8/9、16/17、32/33和64/65六种模式。在自适应多频带LC压控振荡器中，通过调整交叉耦合MOS阵列的栅极宽度来校准MOS的振荡幅度，减轻MOS的1/f闪烁噪声。多频带频率合成器在5.24 GHz载波的5 MHz偏移处表示-121 dBc/Hz。该多频带频率合成器在1.2 V时的总电流为26mA，采用0.13 μ m CMOS工艺技术制造
A 3.8-5.5-GHz Multi-Band CMOS Frequency Synthesizer for WPAN/WLAN Applications
In this paper, we present a 3.8-5.5 GHz multi-band CMOS frequency synthesizer for WLAN and UWB applications. In the multi-band frequency synthesizer, both new multi-mode prescaler and adaptive multi-band LC VCO are proposed. The proposed multi-mode prescaler produces six modes of divide-by-2/3, 4/5, 8/9, 16/17, 32/33, and 64/65. In the adaptive multi-band LC VCO, the gate width of cross-coupled MOS array is tuned to calibrate oscillation amplitude and alleviate 1/f flicker noise of MOS. The multi-band frequency synthesizer represents -121 dBc/Hz at 5 MHz offset from 5.24 GHz carrier. The multi-band frequency synthesizer consumes a total current of 26mA at 1.2 V, and is manufactured in 0.13-mum CMOS process technology
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