Publications

[NOTE: This list is out of date. To be updated]

Refereed Journal Publications
[1] Xu, Z.; MacEachern, L., “Multiple stage uncompensated Marchand balun with 7:1 bandwidth ratio on double side PCB”. Electronics Letters, Volume 45, Issue 10, May 7 2009, Page(s):512 – 514
[2] Brzezina, Greg; Roy, Langis; MacEachern, Leonard, “Design enhancement of miniature lumped-element LTCC bandpass filters”, IEEE Transactions on Microwave Theory and Techniques, v 57, n 4, p 815-823, April 2009
[3] Ghyslain Gagnon, and Leonard MacEachern (2008), “Digital compensation of DAC mismatches in multibit delta-sigma ADCs,” IEEE Electronics Letters 44(12): 721-722.
[4] G. M. Brzezina, L. Roy, and L. MacEachern, “Planar Antennas in LTCC Technology for Ultra-Wideband Applications with Transceiver Integration Capability”, IEEE Journal on Microwave Theory and Techniques, vol. 54, pp. 2830-2839, June 2006.
[5] S. Ghoniemy, L. MacEachern and S. Mahmoud, “Implications of laser nonlinearity on the performance of integrated analog wireless/optical networks: modeling, simulation and measurements”, Kluwer Academic Publishers in the Analog Integrated Circuits and Signal Processing International Journal.
[6] S. Ghoniemy, L. MacEachern, and S. Mahmoud, “Analytical expressions, modeling, and simulations of intensity and frequency fluctuations in directly modulated semiconductor lasers”, Journal of Optical Engineering 43(01), pp. 224-233, Jan 2004.
[7] S. Ghoniemy, L. MacEachern, and S. Mahmoud, “Extended Robust Semiconductor Laser Modeling for Analog Optical Link Simulations”, Journal of Selected Topics in Quantum Electronics, vol. 9, No. 3, pp. 872-878, 2003.

Other Refereed Contributions
Book Chapter
[8] L. MacEachern and T. Manku, “MOSFETs at Radio Frequencies”, CRC RF and Microwave Handbook 2nd Edition, CRC Press, Oct. 2007.

Papers In Refereed Conference Proceedings
[9] Ghoniemy, S.S.A.; Mahmoud, S.; MacEachern, L., “Semi-analytical semiconductor parameters extraction algorithm for optical link simulations”, 2008 International Conference on Laser and Fiber-Optical Networks Modeling, p 113-16, 2008
[10] El-Khatib, Ziad; MacEachern, Leonard; Mahmoud, Samy A., “Fully-integrated CMOS bidirectional distributed amplifier as tunable active duplexer for wireless transceiver applications”, 1st Microsystems and Nanoelectronics Research Conference, MNRC 2008 - Enabling Synergy and Accelerating Excellence in Graduate Student Research, p 5-8, 2008
[11] Xu, Zhan; MacEachern, Leonard, “A predistortion circuit design technique for high performance analogue optical transmission”, 1st Microsystems and Nanoelectronics Research Conference, MNRC 2008 - Enabling Synergy and Accelerating Excellence in Graduate Student Research, p 213-216, 2008
[12] Kuendiger, Till; Chen, Fang; MacEachern, Leonard; Mahmoud, Samy , “A novel digitally controlled low noise ring oscillator”, Proceedings - IEEE International Symposium on Circuits and Systems, p 1016-1019, 2008
[13] Sinisa Milicevic, and Leonard MacEachern, “A Phase-Frequency Detector and a Charge Pump Design for PLL Applications,” 2008 IEEE International Symposium on Circuits and Systems, May 2008.
[14] G. M. Brzezina, L. Roy, and L. MacEachern, “A Miniature LTCC Bandpass Filter Using Novel Resonators for GPS Applications”, European Microwave Conference, 2007 IEEE International, [4 pages], Oct. 8-12, 2007
[15] Ghyslain Gagnon and Leonard MacEachern, “System-Level Design Aspects of a DAC Calibration Technique for Bandpass Delta-Sigma Modulators”, Proceedings of the 51st IEEE Midwest Symposium on Circuits and Systems, Montreal, QC, August 5-8, 2007.
[16] Karim Abdelhalim, Leonard MacEachern and Samy Mahmoud, “A Nanowatt Successive Approximation ADC with a Calibrated Capacitor Array for Biomedical Applications”, Proceedings of the 51st IEEE Midwest Symposium on Circuits and Systems, Montreal, QC, August 5-8, 2007.
[17] Sinisa Milicevic and Leonard MacEachern, “Frequency of Oscillation of a Cross-Coupled CMOS VCO with Resistor Tail Biasing”, Proceedings of the 51st IEEE Midwest Symposium on Circuits and Systems, Montreal, QC, August 5-8, 2007.
[18] Sinisa Milicevic and Leonard MacEachern, “Frequency of Oscillation for a Multi-Band Voltage Controlled Ring Oscillator”, Proceedings of the 51st IEEE Midwest Symposium on Circuits and Systems, Montreal, QC, August 5-8, 2007.
[19] Sinisa Milicevic and Leonard MacEachern, “Frequency Dividers Implementing Custom Cells with Resistor Tail Bias”, International Symposium on Signals, Systems, and Electronics (ISSSE 2007), Montreal, QC, July 1-August 2, 2007.K. Abdelhalim, L. MacEachern and S. Mahmoud "A Nanowatt Successive Approximation ADC with Offset Correction for Implantable Sensor Applications", .IEEE Int. Symposium on Circuits and Systems (ISCAS), May 2007.
[20] G. Gagnon and L. MacEachern, "Continuous Compensation of Binary-Weighted DAC Nonlinearities in Bandpass Delta-Sigma Modulators,” IEEE Int. Symposium on Circuits and Systems (ISCAS), May 2007.
[21] Ayman Mokhtar, Leonard MacEachern, Samy Mahmoud, “Isolator-Free DFB Laser Diode Operating in Feedback Regime V”, Optics East 2006, [4 pages], October 1-4, 2006.
[22] Karim Abdelhalim, Leonard MacEachern, and Samy Mahmoud, “A Nano-Watt ADC for Ultra-Low-Power Applications”, IEEE International Symposium on Circuits and Systems, May 20-25, 2006.
[23] Scott Miller and Leonard MacEachern, “A Nano-Watt Bandgap Voltage Reference for Ultra-Low-Power Applications”, IEEE International Symposium on Circuits and Systems, May 20-25, 2006.
[24] Ayman Mokhtar, Leonard MacEachern, Samy Mahmoud, “Semiconductor Laser Diode Model Implementation Including Optical Back-Reflection”, IEEE CCECE 2006, pp. 2146-2149, May 7-10, 2006.
[25] G. M. Brzezina, Q. Ye, L. Roy, and L. MacEachern, “A Broadband Tunable Monopole using LTCC Technology for WLAN Applications”, Antenna Technology Small Antennas and Novel Metamaterials, 2006 IEEE International Workshop on, pp. 285-288, March 6-8, 2006
[26] G. M. Brzezina, Q. Ye, L. Roy, and L. MacEachern, “LTCC Ultra-Wideband Antenna with Transceiver Integration Capability”, European Radar Conference, 2005 (EURAD 2005), pp. 303-306, Oct. 6, 2005
[27] Yasser Soliman, Leonard MacEachern, and Langis Roy, “A CMOS Ultra-wideband LNA Utilizing a Frequency-Controlled Feedback Technique”, IEEE 2005 International Conference on Ultra-Wideband, pp. 530-535, 2005.
[28] Sinisa Milicevic, Leonard MacEachern, and Samy Mahmoud, “Voltage-Controlled Ring Oscillators for Multi-Band Radio Systems”, The 17th International Conference on Wireless Communications, Calgary, Alberta, vol. 1, pp. 152-157, July 11-14, 2005.
[29] Daniel J. Olszewski, Leonard MacEachern, and Samy Mahmoud, “An Integrated Circuit for Detecting Radio Frequency Spectrum Whitespace”, The 17th International Conference on Wireless Communications, Calgary, Alberta, July 11-14, vol. 1, pp. 166-172, 2005.
[30] Celine Fletcher, Leonard MacEachern, and Samy Mahmoud, “A Switched-Bias VCO Phase Noise Reduction Technique”, The 17th International Conference on Wireless Communications, Calgary, Alberta, July 11-14, vol. 2, pp. 443-447, 2005.
[31] Mark P. Houlgate, Daniel J. Olszewski, Karim Abdelhalim, and Leonard MacEachern, “Adaptable MOS Current Mode Logic for use in a Multi-Band RF Prescaler”, Proceedings of the 2004 IEEE International Symposium on Circuits and Systems (ISCAS2004), vol. 4, pp. 329-332, Vancouver, BC, Canada, 2004.
[32] Ziad El-Khatib, Leonard MacEachern, and Samy A. Mahmoud, “A 0.1-12 Ghz Fully Differential CMOS Distributed Amplifier Employing A Feedforward Distortion Cancellation Technique”, IEEE 2004 International Symposium on Circuits and Systems (ISCAS2004), vol. 1, pp. 617-620, Vancouver, BC, Canada, 2004.
[33] F. Shearer, L. MacEachern, “A CMOS Analog Cubing Circuit for RF and Radio-Over-Fibre Applications”, The 2nd Annual IEEE Northeast Workshop on Circuits and Systems, pp. 281-284, 2004.
[34] L. MacEachern, “A Differential Active Pixel Sensor”, Proc. SPIE Int. Soc. Opt. Eng. 5578, 536-539 (2004).
[35] Mark P. Houlgate, Daniel J. Olszewski, Karim Abdelhalim, and Leonard MacEachern, “Adaptable Performance MOS Current Mode Logic for use in a 3GHz Programmable Frequency Divider”, Proceedings of the 46th IEEE Midwest Symposium on Circuits and Systems, vol. 3, pp. 1303-1306, December 2003
[36] Leonard MacEachern, “Indirect Conversion Multi-Band Radios”, Proceedings of the 46th IEEE Midwest Symposium on Circuits and Systems, vol. 3, pp. 1247-1250, December 2003
[37] S. Ghoniemy, L. MacEachern and S. Mahmoud, “Implications of laser nonlinearity on the performance of integrated analog wireless/optical networks: modeling, simulation and measurements,” 10th IEEE ICECS, UAE, vol. 3, pp. 1220-1223, Dec. 14-17, 2003.
[38] S. Ghoniemy, L. MacEachern and S. Mahmoud, “Semiconductor Laser Diode Distortion Improvement for High Performance Analog Optical Transmission,” Proceedings of the 46th IEEE Midwest Symposium on Circuits and Systems, December 2003 [4 pages]
[39] S. Ghoniemy, L. MacEachern, and S. Mahmoud, “Analytical expressions, modeling, and simulations of intensity and frequency fluctuation in a directly modulated semiconductor lasers”, Proceedings of the SPIE, Fluctuations and Noise in Photonics and Quantum Optics, vol. 5111, pp. 134-144, June 2-4, 2003, New Mexico USA.
[40] S. Ghoniemy, L. MacEachern, and S. Mahmoud, “Performance Analysis and Enhancement of Rf/Fiber Optical Interface for Microcellular Wireless Transceivers”, Wireless and Optical Communications (WOC 2003), pp. 121-126, July 14-16, 2003, Banff, Canada.
[41] S. Ghoniemy, L. MacEachern, and S. Mahmoud, Invited Paper, IEEE Conference on Advanced Optoelectronics and Lasers (CAOL'2003), vol. 1, pp. 84-90, September 16-20, 2003, Alushta, Crimea, Ukraine.
[42] S. Ghoniemy, L. MacEachern, and S. Mahmoud, “Robust Semiconductor Laser Modeling for Analog Optical Link Simulations”, Numerical Simulation of Semiconductor Optoelectronic Devices, NUSOD-02, Zurich, Switzerland, September 2002. [4 pages]
[43] S. Ghoniemy, L. MacEachern, and S. Mahmoud, “Comprehensive Modeling Of Semiconductor Lasers Including The Effect Of Gain Saturation”, Integrated Photonic Research (IPR’02) Conf., Vancouver, Canada, 2002 Technical Digest, PP ITHI8(1-4), July 2002.
[44] S. Ghoniemy, L. MacEachern, and S. Mahmoud, “Enhanced large signal laser modeling including thermal effects for analog communications” Laser and Fiber Optical Networks Modeling Conf., Kharkiv, Ukraine, Proceedings of LFNM’2002, pp 21-24, June 2002.
[45] S. Ghoniemy, L. MacEachern, and S. Mahmoud, “Large Signal Modeling For Analog Communications”, Proc. SPIE, vol. TD01, pp. 139–141, Ottawa, Canada, May 2002.
[46] MacEachern, L. A. and Manku, T., “Novel Indirect-Conversion Receiver Architectures Using Phantom Oscillators”, 2000 IEEE Radio and Wireless Conference, September, 2000.
[47] L. MacEachern and T. Manku, “Metal-Over-Gate Mosfet Modeling For Radio Frequency IC Applications”, The 2000 IEEE International Symposium on Circuits and Systems, vol. 2, pp. 164 –167, 2000.
[48] L. MacEachern and T. Manku, “Novel Indirect-Conversion Transceiver Architectures
Phantom Oscillators”, Radio and Wireless Conference 2000, pp. 223 –226, 2000.
[49] E. Abou-Allam, M. Obrect, Y. Lin, L. MacEachern, T. Manku, “Noise Characterization and Modeling of MOST”, Micronet Annual Workshop, pp. 53-54.
[50] L. MacEachern, E. Abou-Allam, L. Wang, and T. Manku, “Low Voltage Mixer Biasing
Monolithic Integrated Transformer DC-Coupling”, ISCAS’99. Proceedings of the 1999
International Symposium on Circuits and Systems. VLSI, pp. 180–3 vol.2, 1999.
[51] L. MacEachern and T. Manku, “A Low Voltage And Low Power Integrated Radio
Mixer”, IEEE Canadian Conference on Electrical and Computer Engineering, vol. 1, pp. 525–528, 1999.
[52] L. MacEachern, “Constrained Circuit Optimization Via Library Table Genetic
Proceedings of the 1999 IEEE International Symposium on Circuits and Systems, vol. 6,
pp. 310 –313, 1999.
[53] L. MacEachern and T. Manku, “A Charge Injection Method For Gilbert Cell Biasing”,
Canadian Conference on Electrical and Computer Engineering, vol. I, pp. 365–368, 1998.
[54] L. MacEachern and T. Manku, “Genetic Algorithms For Active Contour Optimization”, Proceedings of the 1998 IEEE International Symposium on Circuits and Systems, vol. 4, pp. 229–232, 1998.
[55] T. Manku and L. MacEachern, “A Dc Method For Measuring All The Gate Capacitors In
Devices with Atto-Farad Resolution”, IEEE Transactions on Semiconductor Manufacturing,
vol. 11, no. 1, pp. 141 –145, 1998.
[56] L. MacEachern and T. Manku, “Hilbert-Peano Curve Descriptions Of Layouts For
Resistance Test Structures In CMOS”, IEEE Canadian Conference on Electrical and
Engineering, vol. 2, pp. 629–632, 1997.

Patents
[57] Manku, T., MacEachern, L., “Modulated local oscillator”, 1999, Patent Numbers, CA2245958, EP0899868, US Patent 9140441
[58] Manku, T., MacEachern, L., “A Radio Frequency Zero IF Direct Downconverter”, 1999, Patent Numbers, CA2243757, FI981816, FR2767989, GB2328813, JP11136038, JP2978484B2, US Patent 6148184.
[59] Sinisa Milicevic, Leonard MacEachern, and Samy Mahmoud, “Enhanced Figure of Merit CMOS Ring Oscillators”, US 11/288,389

Technical Reports, Internal Reports, Discussions
[60] L. MacEachern, “Colour Augmented Active Pixel Sensors by Colour Sub-Sampling”, Internal Report and Seminar, Mitel Semiconductor, Kanata, Ontario, February 1999.
[61] L. MacEachern, “CMOS Active Pixel Sensors and Radio Frequency Integrated Circuits: Seeing and Listening With CMOS”, Carleton University Seminar, December 1999.
[62] L. MacEachern, “Radio Frequency Microelectronics”, Texas A&M University Seminar, September 1999.

Theses
[63] L. MacEachern, “RF CMOS Circuits, Devices, and Architectures Including a Spread Spectrum Oscillator Frequency Conversion Technique”, University of Waterloo Ph.D. Thesis, 2002
[64] L. MacEachern, “Genetic Algorithms for Active Contour Optimization in Computer Vision”, Technical University of Nova Scotia M.A.Sc. Thesis, 1996