Doctorates' Information System

     Vamsi Krishna Velidi

Ph.D. fromIIT Kharagpur - Electronics and Electrical Communication Engineering
Supervisor(s)  Prof. Subrata Sanyal
Ph.D. status  Joined in 2008 :: Completed in 2012
AddressAnechoic Chamber Lab, E and ECE Dept., IIT Kharagpur, WB, India 721302.
Phone8095100552
Emailvvamsi.iitkgp@gmail.com
Formal Education
Exam / Degree Board / UnivBranchYear
M.Tech.IIT KharagpurE and ECE Dept. (RF and Microwave Engg.)2008
B.Tech.JNT University, Andhra PradeshElectronics and Communication Engineering2003
12Board of Intermediate Education, Andhra PradeshMaths, Physics, Chemistry1999
10Board of Secondary Education, Andhra Pradesh.General1997

Research Areas
  • Passive Microwave Integrated Circuit Design
  • Planar RF and Microwave integrated circuits, computer-aided design and synthesis procedure
  • Filters and passive components for ultra-wideband (UWB) wireless communication system
  • Microwave measurement
  • Characterization and modeling of passive integrated circuits
  • Integrated circuits and systems in semiconductor technology
  • Monolithic microwave integrated circuits (MMIC)
  • Planar antennas for wideband microwave and millimeter-wave systems

Skills
  • Engineering Software/Simulation tools- IE3D, Ansoft, HFSS, CST Microwave Studio
  • Mathematical Software- Matlab
  • Operating Systems- Windows 9X/2000/2003, XP and Linux.

Experience
  • Internship at IBM SRDC, Bangalore - 3 months - 8 May 2010 to 31 July 2010
  • Research/Teaching Assistant - 3 plus years - July 2007 to present - IIT Kharagpur
  • Lecturer/Assistant Professor - 3 Years - June 2003 to July 2006 - Engineering colleges in Andhra Pradesh

Teaching Experience
  • Electronics and Communication Engineering(L) at TP Institute of Science and Technology, Bobbili, Andhra Pradesh June 2003 - May 2005 (2 terms)
  • Electronics and Communication Engineering(L) at Vignans Institute of Information Technology, Visakhapatnam, Andhra Pradesh June 2005 - July 2006 (1 terms)
  • Modern Radar Systems, Design Laboratory(T) at IIT Kharagpur July 2007 - May 2008 (1 terms)
  • Basic Electronics Laboratory and Design Laboratory(P) at IIT Kharagpur July 2008 - May 2009 (1 terms)
  • Computational Techniques in Electromagnetics, RF and Microwave Circuits Laboratory, Design Lab, Electromagnetic Engg(T) at IIT Kharagpur July 2009 - May 2010 (1 terms)

Fellowships / Scholarships
  • Ph.D Research Assistantship 2008 (Institute Scholar), Indian Institute of Technology Kharagpur.
  • AICTE QIP Assistantship 2006-2008 for M.Tech study at IIT Kharagpur.
  • National Merit Scholarship-1997 (Govt. of Andhra Pradesh), X class.
  • District 2nd rank in X class (1997).
  • Telugu Vignana Parithoshakam (Govt. of Andhra Pradesh) for X (1997) and VII (1994) classes.

Papers Published in Journals
  • Sharp roll-off lowpass filter with wide stopband using stub-loaded coupled-line hairpin unit by Vamsi K. Velidi, and S. Sanyal IEEE Microwave and Wireless Component Letters vol. 21, no. 6, pp. 301-303, June. (2011)
  • Sharp-rejection ultra-wide bandstop filters by Vamsi. K. Velidi, G. Ajaybabu, and S. Sanyal IEEE Microwave and Wireless Component Letters vol.19, no.8, pp. 503-505, Aug. (2009)
  • Compact wideband bandstop filter with multiple transmission zeros based on edge-coupled parallel line and transmission line signal interference by V. K. Velidi, and S. Sanyal Wiley Microwave and Optical Technology Letters vol. 53, no. 10, pp. 2265-2268, Oct. (2011)
  • Improved compact spurious passband suppression rat-race coupler using asymmetric T-shaped units by V. K. Velidi, S. Shrivastava and S. Sanyal Wiley Microwave and Optical Technology Letters vol. 53, no. 10, pp. 2248-2251, Oct. (2011)
  • Compact sharp-cutoff wide-stopband lowpass filters using H-shaped coupled microstrip line units by Vamsi. K. Velidi, and S. Sanyal Wiley Microwave and Optical Technology Letters vol. 52, no. 6, pp. 1402-1405, June. (2010)
  • Microstrip rat-race couplers with predetermined miniaturization and harmonic suppression by Vamsi K. Velidi, D. Pandey, and S. Sanyal Wiley Microwave and Optical Technology Letters vol. 52, no. 1, pp.30-34, Jan (2010)
  • Compact tapped stepped impedance open stub dual-band bandstop filters with sharp rejection characteristics by Vamsi K. Velidi, G. Ajaybabu, and S. Sanyal Wiley Microwave and Optical Technology Letters  vol. 51, no. 10, pp. 2274-2277, Oct (2009)
  • Uniplanar harmonic suppressed compact rat-race couplers by Vamsi K. Velidi, M. K. Mandal and A.Bhattacharya Wiley Microwave and Optical Technology Letters vol. 50, no. 11, pp. 2812-2814, Nov (2008)
  • Miniaturized quadrature hybrid coupler using high impedance lines by M. K. Mandal, Vamsi K. Velidi, A. Bhattacharya and S. Sanyal Wiley Microwave and Optical Technology Letters vol. 50, no. 5, pp. 1135-1137 May (2008)
  • Design of ultra-wideband bandstop filter with three transmission zeros by M. K. Mandal, Vamsi K. Velidi, S. Sanyal and A. Bhattacharya Wiley Microwave and Optical Technology Letters vol. 50, no. 11, pp. 2955-2957, Nov. (2008)
  • Compact planar dual-wideband bandstop filters with cross coupling and open-ended stepped impedance resonators by Vamsi. K. Velidi, and S. Sanyal ETRI Journal vol. 32, no. 1, pp. 148-150, Feb. (2010)
  • Microstrip coupled-line lowpass filter with wide-stopband for RF/ Wireless systems by Vamsi K. Velidi, M. K. Mandal and S. Sanyal  ETRI Journal vol.31, no.3, pp.324-326, Jun (2009)
  • High-rejection wide-stopband lowpass flters using signal interference technique by Vamsi K. Velidi, and S. Sanyal International Journal of RF and Microwave Computer-Aided Engineering vol. 20, no. 3, pp. 253-258, May (2010)
  • Harmonic suppressed compact wideband branch line coupler using unequal length open-stub units by Vamsi K. Velidi, Bhavesh Patel and S. Sanyal Wiley International Journal of RF and Microwave Computer-Aided Engineering vol. 21, no. 1, pp. 115-119, Jan. (2011)
  • Harmionics and size reduced microstrip branch line balun using shunt open-stubs by Vamsi K. Velidi, Ajeet Pal and S. Sanyal Wiley International Journal of RF and Microwave Computer-Aided Engineering vol. 21, no. 2, pp. 190-205, Mar. (2011)
  • Sharp-rejection microstrip bandpass filters with multiple tranmsission zeros by Vamsi K. Velidi, and S. Sanyal Elsevier International Journal of Electronics and Communication vol. 64, no. 12, pp. 1173-1177, Dec (2010)
  • Wide range suppressed harmonic response compact microstrip balun by Vamsi K Velidi, and S Sanyal Elsevier International Journal of Electronics and Communications (AEU) In Press, Available online 2 June (2011)

Papers Presented at Conferences
  • Wideband sharp-rejection signal interference bandstop filter using branch-line coupler by V. K. Velidi, S. Rath, and S. Sanyal International Conference on Devices and Communications, ICDeCom 2011 BIT Mesra, India, pp.1-4, 24-25 Feb. (2011)
  • A compact-size microstrip rat-race coupler with high performance by V. K. Velidi, S. Shrivastava, and S. Sanyal IEEE TechSym, International Conference IIT Kharagpur, India, pp. 57-60, Jan. (2011)
  • A compact planar microstripline balun with suppressed harmonic response by A. Pal, V. K. Velidi, and S. Sanyal Signal Processing and Communications (SPCOM), International Conference IISc Bangalore, India, pp. 1-4, July (2010)
  • Sharp-rejection microstrip lowpass filter using dual-transmission lines by Vamsi K. Velidi, and S. Sanyal APSYM 2010 Kochi, India, pp. 183-186, 14-16 Dec. (2010)
  • Compact dual-wide-bandstop filters by A. B. Guntupalli, V. K. Velidi, and S. Sanyal Applied Electromagnetics Conference (AEMC) 2009 Kolkata, India, pp.1-4, 14-16 Dec. (2009)
  • Miniaturized planar 90 hybrid coupler with unchanged bandwidth using single characteristic impedance line by V. K. Velidi, and A. Bhattacharya Microwave Conference, 2008 China-Japan Joint (CJMW 2008) Shanghai, China, pp. 396 - 399, Sept. (2008)
  • A stub tapped compact hybrid ring coupler with broad-band harmonic rejection by V. K. Velidi, and A. Bhattacharya TENCON 2008, IEEE Region 10 Conference Hyderabad, India, pp. 1-5, 18-21 Nov. (2008)
  • Compact microstrip dual-band quadrature hybrid coupler for mobile bands by V. K. Velidi, M. K. Mandal, A. Bhattacharya and S. Sanyal National Conference on Communications (NCC-2008) IIT Bombay, India, pp. 27-31, Feb. (2008)
  • Design of compact planar microstrip bandpass filter using quadrature hybrid coupler for wireless applications by V. K. Velidi, A. Bhattacharya and S. Sanyal International Conf. on RF and Signal Processing Systems (RSPS 2008), IEEE Hyderabad section Vaddeswaram, India, 1-2 Feb (2008)

Indian Institute of Technology, Kharagpur-721 302, INDIA
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