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Roghoyeh Salmeh - Alumni

Radio Frequency Integrated Circuit (RFIC)

Demand for wireless devices such as cellular phones and wireless local area networks is rapidly increasing. Wireless communication requires circuits with low voltage and low power consumption, which makes very large scale integrated circuits (VLSI's) very attractive. For microwave telecommunications, increasing the transmission capacity is also very important and this is achieved by sophisticated amplitude and phase modulation techniques.

The guiding objective of my research is to design and construct a complete analog direct-conversion receiver at microwave frequencies. Performance characteristics of the receiver such as linearity and noise figure will also be optimized. The two major methods to perform modulation are the Super-heterodyne quadrature modulation and the direct conversion modulation. The direct conversion modulation offers considerable advantages over the Super-heterodyne architecture in terms of system simplification and performance.

The front end of the receiver will include a low noise amplifier (LNA), in-phase and quadrature splitters, two balanced mixers, a quadrature phase comparator and circuits to adjust phases and amplitudes. IBM's SiGe5AM and ST's 90 nm CMOS technologies will be used to design the integrated circuits.

The required integrated circuits will be fabricated using the Canadian Microelectronics Corporation's (CMC) integrated circuit fabrication services available to graduate students. The required testing equipment are available in the Calgary Center for Innovative Technology (CCIT) and TRLabs Calgary.

Teaching:

Microwave Circuits and Antennas (ENEL 575) Fall 2007

Educations:

- Ph. D. in Electrical Engineering - University of Calgary

- M. Sc. in Electrical Engineering - University of Calgary

- B. Sc. in Electrical Engineering - University of Tehran

Publications:

1.  R. Salmeh and B. Maundy,"A Novel Q Tuning System for Lowpass Continuous Time Filters", International Journal of Electronics, Vol. 89, No.6, pp. 477-491, June 2002.

2.  R. Salmeh and B. Maundy, "A Linearly Tuned Fully Differential OTA and Its Applications in Filter Design", IEEE Canadian Conference on Electrical and Computer Engineering (CCECE02) ,vol. 1,pp.393-398, May 2002.

3.  D. Westwick, B. Maundy and R. Salmeh,"Approximate LMS Tuning of Continuous Time Filters: Convergence and Sensitivity Analysis"", IEE Proceedings - Circuits Devices and Systems, Vol. 152, No. 1, pp. 1-6, February 2005.

4.  R. Salmeh, B. Maundy and R. H. Johnston, ""A Comparison of Bipolar and CMOS Mixer Structures for Direct Conversion Modulation at Microwave Frequencies", IEEE CCECe2003-Canadian Conference on Electrical and Computer Engineering, Volume 1: pp. 85-88, May 2003.

5.  R. Salmeh, B. Maundy and R. H. Johnston,"Direct Modulation and De-Modulation at Microwave Frequencies," Micronet Proceeding, pp. 27-28, September 2003.

6.  R. Salmeh, B. Maundy and R. H. Johnston,"Design Issues of Direct Conversion Receiver in SiGe technology," IEEE Canadian Conference on Electrical and Computer Engineering (CCECE04) ,vol. 1,pp.0061-0064, May 2004.

7.  R. Salmeh and B. Maundy, "VLSI Implementation of An Automatic Q Tuning System", Proceedings of the 2004 IEEE ACM Great Lake Symposium on VLSI, pp. 260-265, April 2004.

8.  R. Salmeh and B. Maundy ,"Complete Automatic Q Tuning System on a Chip", Integration, The VLSI Journal, Vol. 38/3, pp. 399-415, November 2004.

9.  R. Salmeh, B. Maundy and R. H. Johnston ,"AN ACTIVE DIRECT DOWN CONVERSION MIXER FOR WLAN APPLICATIONS," IEEE International Conference on Electrical and Electronics Engineering and X Conference on Electrical Engineering (ICEEE/CIE) 2004, pp. 222-225, September 2004.

10. R. Salmeh, B. Maundy and R. Johnston, "Minimum Noise Figure of a Low Noise Amplifier Based on Noise Optimization Technique" , IEEE 7th International Conference on Advanced Communication Technology (ICACT 2005), Vol. 1, pp. 612-615, Feb. 2005.

11. R. Salmeh, "A Low Voltage/ Low Power 1.5 GHz Low Noise Amplifier" 2005 IEEE/ Sarnoff Symposium on Advances in Wired and Wireless Communications, pp. 81-84, April 2005.

12. R. Salmeh, B. Maundy and R. Johnston, "Effects of Input Matching Inductor on the Minimum Noise Figure of a Low Noise Amplifier Designed Based on Noise Optimization Technique" IEEE- International conference on PhD Research in Microelectronics and Electronics 2005. vol. 2, Page 190-193, July 2005.

13. R. Salmeh "Effects of variation of input matching inductor on the minimum noise figure of a low noise amplifier" IEEE- 48th Midwest Symposium on Circuits and Systems. Page 1123-1126, August 2005.

14. R. Salmeh, “Effects of the load on the gain, noise figure and linearity of a Gilbert cell double balanced mixer,” IEEE Mid-West Symposium on Circuit and Systems, vol. 1, pp. 366-369, August 2006.

15. R. Salmeh, “An Ultra Low Power ESD Protected Mixer in 90nm RF CMOS,” IEEE Mid-West Symposium on Circuit and Systems, , vol. 1, pp. 47-50, August 2006.

16. R. Salmeh, B. Maundy and R. Johnston, “A Novel 5.3 GHz Wide-Band Input and Output Matched Low Noise Amplifier,” IEEE Mid-West Symposium on Circuits and Systems, 4 pages, 2007.

17. R. Salmeh and B. Maundy, “Impact of pads, ESD diodes and package parasitic on the noise figure and gain of a common source low noise amplifier,” Submitted to IEEE Transaction on Microwave and Theory, 6 pages.

18. R. Salmeh, B. Maundy and R. Johnston, “A Novel Low Power RF Mixer with High Gain and Low Noise Figure,” Submitted to IEEE Transactions on Circuits and System, 5 pages, 2007.

Research interests:

- Radio Frequency Integrated Circuit (RFIC) Design

- Adaptive Tuning System Design

- Mixed Signal Circuit Designs for High Frequency Communications

- Low Voltage Analog IC Design of Filters and AGC

- Design of Low Voltage and Low Power Recievers

Work Experience:

Quality Technical Manager Honeywell Inc.

Sessional Instructor Schulich School of Engineering, University of Calgary

Senior RFIC Design Engineer SiRF Technology Inc., San Jose, California

Lead DCS Engineer Mahab Ghodss Consulting Engineering Co.

Awards:

1) Natural Science and Engineering Research Council of Canada Scholarship (NSERC IPS), Ph. D. program, January 2004.

2) TRLabs wireless communication, Graduate scholarship, Ph. D. program.

3) Alberta Ministry of Learning Scholarship, for excellence in M. Sc. Program.

4) ICORE, Science to Society scholarship, Ph. D. program, 2006 and 2007.

5) Graduate Teaching Assistantship, University of Calgary, M. Sc. and Ph. D. programs.

6) Graduate Research Assistantship, University of Calgary, M. Sc. and Ph. D. programs.

7) Ministry of Higher Education Scholarship, University of Tehran, B. Sc. Program.

8) Ranked first in the High-school diploma exam in the province of Mazandaran, Iran.

Other Activities and Interests:

- Registered Member of APEGGA (The Association Professional Engineers, Geologists and Geophysicts of Alberta), P. Eng.

- Member of IEEE.

- Reviewer of IEEE Transaction on Circuit and System.