Design of a 10 GHz LC-VCO with low tuning gain fluctuation

被引：0
|
作者：
Qi X. [1 ]
Yu J. [1 ]
Sun X. [1 ]
Gao M. [1 ]
Zhang Z. [1 ]
Zhao W. [1 ]
机构：
[1] School of Information Science and Technology, Northwest University, Xi'an
来源：
Guofang Keji Daxue Xuebao/Journal of National University of Defense Technology | 2021年 / 43卷 / 02期
关键词：
Distributed biased varactor array; Switched capacitor array; Switched varactor array; Tuning gain; VCO;
D O I：
10.11887/j.cn.202102008
中图分类号：
学科分类号：
摘要：
Based on 0.18 μm CMOS process, a low-variable tuning gain LC-VCO(inductance capacitance-voltage controlled oscillator) was designed for wireless communication and radar systems. The circuit includes a distributed bias varactor array and a switched capacitor array, a reasonable selection of the bias voltage can achieve the purpose of expanding the C-V(capacitance-voltage) curve, thereby effectively reducing the tuning gain within the entire tuning voltage range. The three-bit switched capacitor array divides the entire adjustable frequency range into 8 sub-bands, which is implemented by controlling the varactor array. And the switched varactor array is adopted, which can effectively suppress the variation of the LC-VCO tuning gain. Based on the model of 1P6M 0.18 μm technology, the post-layout simulation results show the good performance on property of tuning gain variation rate, which is 21.5% with the frequency tuning range from 9.13 GHz to 11.15 GHz, at the same time, the VCO DC power consumption is 9 mW with 1.8 V supply voltage, the phase noise is -105 dBc/Hz@1 MHz when the VCO oscillating frequency is around 10 GHz. © 2021, NUDT Press. All right reserved.
引用
收藏
页码：54 / 60
页数：6
相关论文
共 22 条
  • [1] CAO S G, HAN K F, TAN X, Et al., A 1.0 V differential VCO in 0.13 μm CMOS technology, Chinese Journal of Semiconductors, 32, 2, pp. 126-129, (2011)
  • [2] DAI Xishi, Design of a high performance LC-VCO for broadband application, Microelectronics, 44, 1, pp. 47-50, (2014)
  • [3] LI Zhongqiu, ZENG Quansheng, Relationship analysis between PLL phase noise and PLL bandwidth, Modern Electronics Technique, 32, 14, pp. 132-134, (2009)
  • [4] TANG Xuefeng, Design of wide-band LC VCO with low phase noise, Application of Electronic Technique, 41, 11, pp. 54-57, (2015)
  • [5] SONG Xiang, The design of high performance wideband voltage-controlled oscillator in DRM/DAB receiver, (2015)
  • [6] CHENG Fuhai, Design of 2.4 GHz CMOS low power VCO, (2017)
  • [7] WANG Min, XIE Sheng, MAO Luhong, Et al., Design of a mm-wave LC-VCO with a wide tuning range, Journal of Nanjing University (Natural Sciences), 56, 1, pp. 151-157, (2020)
  • [8] YUAN Lu, TANG Zhangwen, Min Hao, A wideband LC-VCO with small tuning gain fluctuation, Journal of Semiconductors, 29, 5, pp. 1003-1009, (2008)
  • [9] XU Leijun, WANG Chaoran, BAI Xue, A novel capacitor bank for linearized and wide-band VCO, Microelectronics, 46, 6, pp. 781-787, (2016)
  • [10] LUO Y B, MA C Y, GAN Y B, Et al., A dual-band CMOS LC-VCO with highly linear frequency tuning characteristics, Microelectronics Journal, 46, 12, pp. 1420-1425, (2015)
123