Personal Webpage

Research Interests

Mobile communications, nonlinear radio frequency/ microwave devices, GaAs monolithic microwave integrated circuits, phased array antennas.

Nonlinear microwave circuits and devices, quantum well devices, mobile communications,linearization, phased array antennas, digital signal processing.

Selected Publications

T. Wei and S.P. Stapleton, Capacitance of resonant tunneling diodes with spacer layers, Solid State Electronics, 38, pp. 456-459, 1995.

T. Wei, S.P. Stapleton and E. Berolo, Capacitance and hysteresis study of AlAs-GaAs resonant tunneling diodes with asymmetric spacer layers, Journal of Applied Physics, 77(8), pp. 4071-6, April 1995.

T. Wei, S.P. Stapleton and E. Berolo, Microwave impedance measurements on resonant tunneling diodes with asymmetric space layers, Superlattice and Microstructures, 16, pp. 191-195, 1995.

T. Wei, S.P. Stapleton and O. Berolo, Scattering Parameter Measurements of Resonant Tunneling Diodes up to 40 Ghz, IEEE Transactions on Electron Devices, Vol. 42 (7), July 1995.

T. Wei and S.P. Stapleton, Effects of fixed interface charge on the I-V and C-V characteristics of resonant tunneling diodes, Journal of Applied Physics, (June 1995).

S.P. Stapleton, T. McKeen and X. Carbo, Tracking and Diversity for a Base Station Array Antenna, IEEE Vehicular Technology Transaction, Sept. 1995.

S.P. Stapleton, T. McKeen and X. Carbo, Field Test of a Base Station Array Antenna, IEEE Vehicular Technology Transaction, Aug. 1995.

Y. Hu and S.P. Stapleton, "Effect of quasi-bound states in the double barrier resonant tunneling diode, Journal of Physics, Mar. 1995.

S.P. Stapleton and T. Wei, Capacitance calculations of resonant tunneling diodes, Mathematical Modelling and Scientific Computing, 4, pp. 1022-1028, 1994.

D. Hilborn, S.P. Stapleton, and J.K. Cavers, An Adaptive Direct Conversion Transmitter, IEEE Vehicular Technology Transactions, Vol. 43, (2), May 1994.

T. Wei and S.P. Stapleton, Effect of Spacer layer on capacitance of resonant tunneling diodes, Journal of Applied Physics, 76(12), pp. 1287-90, 1994.

L. Quach and S.P. Stapleton, A Postdistortion receiver for Mobile Communications, IEEE Vehicular Technology Transactions, Vol. 42 (4), Nov. 1993.

Yuming Hu and S.P. Stapleton, Sequential Tunneling versus Resonant Tunneling in a Double Barrier Resonant Tunneling Diode, Journal of Applied Physics, 73(12), pp. 8633-6, 1993. Yuming Hu and S.P. Stapleton, Self-consistent Model of a Double Barrier Resonant Tunneling Diode: Dependence on intrinsic bistability on structural parameters, Journal of Applied Physics 73 (10), pp. 5254-63, May 1993.

Yuming Hu and S.P. Stapleton, Double-Barrier Resonant Tunneling Transport Model, IEEE Trans. Quantum Electronics, Vol. 29, No. 2, pp. 327-339, February 1993.

T. Wei and S.P. Stapleton, Equivalent circuit and capacitance of double barrier resonant tunneling diode, Journal of Applied Physics, 73 (2), pp. 829-34, January 1993.

S.P. Stapleton, A Cellular Base Station Phased Array Antenna System, IEEE Vehicular Technology, Conference, New Jersey, May 1993.

S.P. Stapleton, G.S. Kandola and J.K. Cavers, Simulation and Analysis of an Adaptive Predistorter Utilizing a Complex Spectral Convolution, IEEE Trans. Vehicular Technology, accepted for publication, January 1993.

Han-Xiong Lian and S.P. Stapleton, The TM mode in the self-focusing dielectric planar waveguide, IEEE Trans. on Microwave and Optical Technology Letters, August 1992.

S.P. Stapleton and F.C. Costescu, An Adaptive Predistorter for a Power Amplifier Based on Adjacent Channel Emissions, IEEE Trans. Vehicular Technology, February 1992.

Y. Hu and S.P. Stapleton, Double-Barrier Resonant Tunneling Transport Model, IEEE Trans. Quantum Electronics, accepted for publication, 55 MS pages, June 1992.

D. Hilborn, S.P. Stapleton and J.K. Cavers, An Adaptive Direct Conversion Transmitter, accepted for publication, IEEE Vehicular Technology Transactions, November 1992.

Partners and Lab Affiliations

Research contract with Microtel Pacific Research on GaAs MMICs.

Research contract with Photon Systems on optical receivers for CATV applications.

Research collaboration on the Linearization and Phased Array Antennas with Glenayre and MPR. (Funding supported by Science and Technology Development Fund.)

Research collaboration on quantum well devices with Bell Northern Research; quantum well group coordinated by CRC. BNR fabricates MBE wafers and CRC processes them.

Technology (adaptive predistortion) transfers (licensing agreements) to Novatel and National Wireless Research Center Foundation (consortium of Nexus, MPR, Glenayreand a number of smaller BC companies).

Personal Webpage

http://www.ensc.sfu.ca/people/faculty/stapleton/Bio/