Design and simulation of a lumped element metal finger capacitor for RF-CMOS power splitters

Uddin, Md. Jasim and Nordin, Anis Nurashikin and Ibrahimy, Muhammad Ibn and Reaz, Mamun Bin Ibne (2010) Design and simulation of a lumped element metal finger capacitor for RF-CMOS power splitters. In: Circuits and Systems (APCCAS), 2010 IEEE Asia Pacific Conference on, 6-9 Dec 2010, Kuala Lumpur.

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Abstract

Design, development and simulation results of an interdigitated metal-fingers capacitors in 0.18 #x03BC;m RF-CMOS technology that are exploiting both lateral and vertical metal-metal capacitances are presented. Two RF-CMOS capacitors are designed specifically for applications in a 2.45GHz power splitter circuit. Five metal RF-CMOS layers are used to design two capacitors of 1.39pF and 2.2pF, consisting of 101 and 105 metal fingers respectively. The real impedance obtained at the input is Z1 = 35.04 #x03A9; and Z2 = 39.73 #x03A9;, while the insertion loss is S21 = 2.47dB. Return loss S11 and S22 are simulated as 4.042dB and 4.047dB respectively. Phase measurements of 110.9 #x00B0; and 101.2 #x00B0; are obtained for the input and output ports, indicating that the phase shift is not degraded too much due to the capacitor.

Item Type:	Conference or Workshop Item (Full Paper)
Additional Information:	3239/3704
Uncontrolled Keywords:	RF-CMOS capacitors;RF-CMOS layers;RF-CMOS power splitters;RF-CMOS technology;capacitance 1.39 pF;capacitance 2.2 pF;frequency 2.45 GHz;insertion loss;interdigitated metal-fingers capacitors;lateral metal-metal capacitances;loss 2.47 dB;loss 4.042 dB;loss 4.047 dB;lumped element metal finger capacitor;phase measurements;phase shift;power splitter circuit;real impedance;resistance 35.04 ohm;resistance 39.73 ohm;size 0.18 mum;vertical metal-metal capacitances;CMOS integrated circuits;capacitance;capacitors;impedance matching;lumped parameter networks;phase measurement;phase shifters;power dividers;radiofrequency integrated circuits;
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK7800 Electronics. Computer engineering. Computer hardware. Photoelectronic devices > TK7885 Computer engineering
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering > Department of Electrical and Computer Engineering
Depositing User:	Dr. Anis Nurashikin Nordin
Date Deposited:	22 Sep 2011 10:34
Last Modified:	22 Sep 2011 10:34
URI:	http://irep.iium.edu.my/id/eprint/3704

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