In this paper, a novel voltage controlled oscillator (VCO) with low phase noise, low power consumption and wide tuning range in the industrial, scientific and medical (ISM) band is proposed for communication systems applications. For improving the phase noise, filtering technique is used and VCO is designed with TSMC CMOS 0.18 μm technology and the power supply is 1.5 V. The simulation results with advanced design system (ADS) shows that phase noise in 1 MHz offset frequency from the carrier is -122 dBc/Hz and tuning range is 2 to 2.8 GHz. The power consumption of the core is 2.49 mW.
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Dashtbayazi, M., Sabaghi, M. and Marjani, S. (2015) Dynamic Comparator with Using Negative Resistance and CMOS Input Pair Strategies in FS = 4 MHz - 10 GHz. Journal of Electrical and Electronic Engineering, 3, 93-96. http://dx.doi.org/10.11648/j.jeee.20150304.15
Dashtbayazi, M., Marjani, S. and Sabaghi, M. (2015) A 4 MHz - 10 GHz, 10-ps/dec Dynamic Comparator Using Negative Resistance Combined with CMOS Input Pair. The Progress in Electromagnetics Research Symposium (PIERS), Prague, Czech Republic, 6-9 July 2015, 831-834.
Sabaghi, M., Majdabadi, A., Dashtbayazi, M. and Marjani, S. (2015) A 4 MHz - 10 GHz, Dynamic Comparator Using Negative Resistance Combined with CMOS Input Pair Strategy in Dynamic Pre-Amplifier. The Iranian Conference on Optics and Laser Engineering (ICOLE), Isfahan, Iran, 2-3 September 2015, 136-139.
Dashtbayazi, M., Sabaghi, M. and Marjani, S. (2015) An Optimized DAC Timing Strategy in SAR ADC with Considering the Overshoot Effect. Journal of Electrical and Electronic Engineering, 3, 19-24. http://dx.doi.org/10.11648/j.jeee.20150302.12
Dashtbayazi, M., Sabaghi, M., Rezaei, M. and Marjani, S. (2014) New Delta Sigma Modulator Structure Using Second Order Filter in One Stage Technique. Journal of Electrical and Electronic Engineering, 2, 82-88. http://dx.doi.org/10.11648/j.jeee.20140206.11
Sabaghi, M., Dashtbayazi, M. and Marjani, S. (2016) Dynamic Hysteresis Band Fixed Frequency Current Control. World Applied Programming, 6, 1-4.
Sabaghi, M., Dashtbayazi, M. and Marjani, S. (2015) An Optimized Opamp-Sharing in 2nd Order ΔΣ Modulator Based on Changing the Stages Output Capacitance Timing Strategy. The Progress in Electromagnetics Research Symposium (PIERS), Prague, Czech Republic, 6-9 July 2015, 827-830.
Dashtbayazi, M., Majdabadi, A., Sabaghi, M. and Marjani, S. (2015) An Optimized Opamp-Sharing Technique in 2nd Order Delta-Sigma Modulator Based on Changing the Stages Output Capacitance Timing Strategy. The Iranian Conference on Optics and Laser Engineering (ICOLE), Isfahan, Iran, 2-3 September 2015, 129-131.
Dashtbayazi, M., Marjani, S., Sabaghi, M. and Majdabadi, A. Changing the Clock Pulse-Width Dedicated to Stages Strategy for Opamp-Sharing Technique in 2nd Order High-Pass Delta-Sigma Modulators. The International Conference on Electrical, Computer, Mechanical and Mechatronics Engineering (ICE), Dubai, United Arab Emirates, 4-5 February 2016, Unpublished.
Marjani, A., Marjani, S. and Shirazian, S. (2011) Numerical Simulation of Silicon Carbide Polymers (6H-SiC & 3C-SiC) as the Active Area for 0.83 μm Wavelength Semiconductor Laser. The 14th Iranian Physical Chemistry Conference, Kish, 25-28 February 2011, 876-878.
Marjani, S., Faez, R. and Marjani, H. (2011) Analysis and Design of Semiconductor Laser with Silicon Carbide Polymers (6H-SiC and 3C-SiC). Australian Journal of Basic and Applied Sciences, 5, 1060-1063.
Marjani, S. and Marjani, H. (2012) Self-Heating Effects in a Silicon Carbide Polymers (6H-SiC and 3C-SiC) Semiconductor Laser. Asian Journal of Chemistry, 24, 3145-3147.
Marjani, S. and Marjani, H. (2012) Effects of Lattice Temperature on the Various Elements of Heat Sources in Silicon Carbide Polymers (6H-SiC and 3C-SiC) Semiconductor Laser. Asian Journal of Chemistry, 24, 3123-3125.
Marjani, S., Faez, R. and Marjani, H. (2012) Analysis of the Various Elements of Heat Sources in Silicon Carbide Polymers (6H-SiC and 3C-SiC) Semiconductor Laser. Asian Journal of Chemistry, 24, 2333-2335.
Marjani, S., Faez, R. and Marjani, H. (2012) Design and Modeling of a Semiconductor Laser by Employing Silicon Carbide Polymers (6H-SiC, 3C-SiC and 4H-SiC). Asian Journal of Chemistry, 24, 2177-2179.
Marjani, S., Faez, R. and Hosseini, S.E. (2013) Analysis of Lattice Temperature Effects on a GaInP/6H-SiC Strained Quantum-Well Lasers. Asian Journal of Chemistry, 25, 4715-4717.
Madadi, R., Marjani, S. and Faez, R. (2013) Silicon Carbide Polymers (6H-SiC, 3C-SiC and 4H-SiC) Semiconductor Laser: Influence of Self-Heating. The 3rd Iranian Conference on Optics and Laser Engineering (ICOLE), Isfahan, 9-10 October 2013, 1069-1072.
Rafighi, F., Behrouzinia, S., Khorasani, K., Sabaghi, M. and Marjani, S. (2016) The Electrical Parameters Modeling and Ex-Perimentation of Copper Vapor Laser. Circuits and Systems, 7, 23-28. http://dx.doi.org/10.4236/cs.2016.71003
Behrouzinia, S., Khorasani, K., Marjani, S., Sabaghi, M., Aeinehvand, M.E. and Mohammadpour Lima, S. (2016) Experimental Study of Buffer Gas Flow Rate Effect on Output Power of a Copper Vapor Laser. Optics and Photonics Journal, in Press.
Faez, R., Marjani, A. and Marjani, S. (2011) Design and Simulation of a High Power Single Mode 1550nm InGaAsP VCSELs. IEICE Electronics Express, 8, 1096-1101. http://dx.doi.org/10.1587/elex.8.1096
Marjani, S., Faez, R. and Marjani, H. (2011) An Impact of the Hole Etching Depth within a Photonic Crystal VCSEL on Its Heat Sources. Australian Journal of Basic and Applied Sciences, 5, 766-770.
Marjani, S., Faez, R. and Marjan, A. (2011) Design and Modeling of a High Single Mode Power Long Wavelength InGaAsP Photonic Crystal VCSEL. Australian Journal of Basic and Applied Sciences, 5, 1064-1069.
Marjani, S., Rahnama, M. and Marjani, H. (2011) Numerical Optimization of Single-Mode InGaAsP Vertical-Cavity Surface-Emitting Lasers. Australian Journal of Basic and Applied Sciences, 5, 1207-1211.
Marjani, S. and Marjani, H. (2011) Effects of Lattice Temperature on the Various Elements of Heat Sources in a Long Wavelength InGaAsP Photonic Crystal VCSEL. Australian Journal of Basic and Applied Sciences, 5, 1257-1261.
Marjani, S. and Marjani, H. (2011) Analysis of Lattice Temperature Effects on a Long Wavelength InGaAsP Photonic Crystal VCSEL. Australian Journal of Basic and Applied Sciences, 5, 1374-1378.
Marjani, S. and Marjani, H. (2012) Optimization of a Long Wavelength Vertical-Cavity Surface-Emitting Lasers by Employing Photonic Crystal. Asian Journal of Chemistry, 24, 3174-3176.
Marjani, S. and Marjani, H. (2012) Effects of Hole Etching Depth in a Long Wavelength InGaAsP Photonic Crystal Vertical Cavity Surface Emitting Laser. Asian Journal of Chemistry, 24, 3194-3196.
Marjani, S. (2013) Various Elements of Heat Sources within an Optimized Photonic Crystal Vertical Cavity Surface Emitting Laser: Influence of Hole Etching Depth. Asian Journal of Chemistry, 25, 4153-4156.
Marjani, S. (2013) Optimization of an InGaAsP Vertical-Cavity Surface-Emitting Diode Lasers for High-Power Single-Mode Operation in 1550 nm Optical-Fibre Communication Systems. Asian Journal of Chemistry, 25, 4150-4152.
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Naeemi, M.A., Marjani, S. and Peiravi, A. (2014) Time to Failure Analysis of Single Mode Long-Wavelength InGaAsP Vertical-Cavity Surface-Emitting Lasers. The 22nd Iranian Conference on Electrical Engineering (ICEE), Tehran, 20-22 May 2014, 43-47. http://dx.doi.org/10.1109/iraniancee.2014.6999500
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