共查询到19条相似文献,搜索用时 624 毫秒
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提出了一种基于柔性衬底的平面螺旋电感,介绍了柔性衬底的优点,对比了平面电感的结构类型,给出了平面螺旋电感的自感、电容、串联电阻及互感的计算方法,并对方形平面电感进行了仿真。 相似文献
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介绍了单晶集成电感、单晶传输线变压器以及将其作为balun的运用方案.对射频电路中平面螺旋电感的分布参数模型进行了分析,进而讨论了平直导体的电感值的理论计算方法,然后以此为基础,以两圈的长方形、一圈的平面螺旋线圈电感和正方形平面螺旋电感为例计算了其电感值. 相似文献
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锥形螺旋电感是一种新型电感,在较宽的频带内有良好的一致性,在毫米波电路和光载无线通信系统(RoF Radio-over-Fiber)中有广泛的应用.本文对锥形螺旋电感感值、螺旋电感长度、直流电阻的计算方法进行了研究,给出了精确计算方法,其中,电感值误差在10.2%以内,直流电阻误差在6.5%以内;对锥形空心螺旋电感微波特性进行研究,提出了一种等效模型,该模型拟合计算结果与实测曲线有较好的一致性,使用该模型给出了螺旋电感宽带特性的详细理论推导,同时利用该模型首次对锥形螺旋电感的宽带特性进行了直观解释;最后,将绕制参数对电感微波性能的影响进行分析,引入单位长度电感量参数α和电感量-频率参数β,可对超宽带锥形电感微波特性进行优化,对某些特性进行快速优化. 相似文献
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Physical modeling of spiral inductors on silicon 总被引:29,自引:0,他引:29
This paper presents a physical model for planar spiral inductors on silicon, which accounts for eddy current effect in the conductor, crossover capacitance between the spiral and center-tap, capacitance between the spiral and substrate, substrate ohmic loss, and substrate capacitance. The model has been confirmed with measured results of inductors having a wide range of layout and process parameters. This scalable inductor model enables the prediction and optimization of inductor performance 相似文献
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Tzyy-Sheng Horng Kang-Chun Peng Je-Kuan Jau Yu-Shun Tsai 《Microwave Theory and Techniques》2003,51(11):2197-2202
This paper formulates various quality (Q) factors associated with the applications of on-chip spiral inductors to radio-frequency integrated circuits using S-parameters. The formulations start with the Q factor of a spiral inductor in a generalized two-port configuration based on a new complex-power approach and then extend to the Q factors of a tank and matching circuits that use the spiral inductors. In the demonstration, the two-port S-parameters for a series of CMOS spiral inductors have been measured to further generate such various Q factors for a many-sided evaluation of the inductor performance. 相似文献
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30-100-GHz inductors and transformers for millimeter-wave (Bi)CMOS integrated circuits 总被引:2,自引:0,他引:2
Dickson T.O. LaCroix M.-A. Boret S. Gloria D. Beerkens R. Voinigescu S.P. 《Microwave Theory and Techniques》2005,53(1):123-133
Silicon planar and three-dimensional inductors and transformers were designed and characterized on-wafer up to 100 GHz. Self-resonance frequencies (SRFs) beyond 100 GHz were obtained, demonstrating for the first time that spiral structures are suitable for applications such as 60-GHz wireless local area network and 77-GHz automotive RADAR. Minimizing area over substrate is critical to achieving high SRF. A stacked transformer is reported with S/sub 21/ of -2.5 dB at 50 GHz, and which offers improved performance and less area (30 /spl mu/m/spl times/30 /spl mu/m) than planar transformers or microstrip couplers. A compact inductor model is described, along with a methodology for extracting model parameters from simulated or measured y-parameters. Millimeter-wave SiGe BiCMOS mixer and voltage-controlled-oscillator circuits employing spiral inductors are presented with better or comparable performance to previously reported transmission-line-based circuits. 相似文献
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Design and modeling of a micromachined high-Q tunable capacitor with large tuning range and a vertical planar spiral inductor 总被引:3,自引:0,他引:3
Jinghong Chen Jun Zou Chang Liu Schutt-Aine J.E. Kang S.-M.K. 《Electron Devices, IEEE Transactions on》2003,50(3):730-739
In wireless communication systems, passive elements including tunable capacitors and inductors often need high quality factor (Q-factor). In this paper, we present the design and modeling of a novel high Q-factor tunable capacitor with large tuning range and a high Q-factor vertical planar spiral inductor implemented in microelectromechanical system (MEMS) technology. Different from conventional two-parallel-plate tunable capacitors, the novel tunable capacitor consists of one suspended top plate and two fixed bottom plates. One of the two fixed plates and the top plate form a variable capacitor, while the other fixed plate and the top plate are used to provide electrostatic actuation for capacitance tuning. For the fabricated prototype tunable capacitors, a maximum controllable tuning range of 69.8% has been achieved, exceeding the theoretical tuning range limit (50%) of conventional two-parallel-plate tunable capacitors. This tunable capacitor also exhibits a very low return loss of less than 0.6 dB in the frequency range from 45 MHz to 10 GHz. The high Q-factor planar coil inductor is first fabricated on a silicon substrate and then assembled to the vertical position by using a novel three-dimensional microstructure assembly technique called plastic deformation magnetic assembly (PDMA). Inductors of different dimensions are fabricated and tested. The S-parameters of the inductors before and after PDMA are measured and compared, demonstrating superior performance due to reduced substrate loss and parasitics. The new vertical planar spiral inductor also has the advantage of occupying much smaller silicon areas than the conventional planar spiral inductors. 相似文献
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Micro-electromechanical system (MEMS) suspended inductors have been widely studied in recent decades because of their excellent radio frequency performance. However, few studies have been performed on the failure analysis of MEMS suspended inductors under mechanical shock. In this study, the failure of MEMS suspended inductors with a planar spiral coil is investigated through analytical and experimental methods. We present a stress and deformation analysis to study the failure mode of the suspended inductors under shock. To verify the theoretical analysis, MEMS inductors are designed and fabricated, and shock tests are carried out. The shock tests show that the failure mode of the MEMS suspended inductors is a fracture that occurs at the ends of the inductor coil, and the test results agree with the theoretical analysis. 相似文献
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提出了一种用于提高硅基螺旋电感性能的局部介质增厚技术.这种技术通过淀积、光刻和湿法腐蚀工艺,局部增加电感下方的氧化层厚度,以降低衬底损耗和提高电感性能.所采用的结构及工艺简单、成本低廉,与CMOS工艺兼容良好.用这种技术制作的几种不同电感量的方形螺旋电感、品质因数和自谐振频率均显著提高.10,5和2nH的电感,品质因数的峰值分别提高了46.7%,49.7%和68.6%;而自谐振频率的改善更明显,分别达到了92.1%,91.0%及不低于68.1%. 相似文献
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A Novel Local-Dielectric-Thickening Technique for Performance Improvements of Spiral Inductors on Si Substrates 总被引:2,自引:2,他引:0
A novel local-dielectric-thickening technique is presented for performance improvements of Si-based spiral inductors.This technique employs the processes of deposition,photolithography,and wet-etching,to locally thicken the oxide layer under the inductor,which can decrease the substrate loss and improve the inductor performance.Both the structures and processes are compact,economical,and compatible with CMOS processing.Several square spiral inductors with different inductances are fabricated,and the quality factors and the self-resonant frequencies both increase clearly with this proposed technique:for the 10,5,and 2nH inductors,the peak quality factors are effectively improved by 46.7%,49.7%,and 686%,respectively;however,the improvement percents of the selfresonant frequencies are more significant,which are 92.1%,91.0%,and no less than 68.1%,respectively. 相似文献