Active Microwave Phased Arrays for Medical Hyperthermia: Device Selection, Characterization and Implementation of their Drive Circuits, Michael J. Hill

Abstract: Significant progress toward a functional 73 element, 730 watt, active microwave phased array has been made. This array, designed for medical hyperthermia applications, has significant size restrictions leading to a novel space conscious design. Unlike other hyperthermia devices, each array element is designed to have full 360 degree phase control with better than 1 degree resolution. Full amplitude control, with 10 bit amplitude resolution is implemented. The array is designed to operate in the 2.45 GHz ISM band. Measured operational data is presented and is compared to simulations performed with Compact Software’s Microwave Harmonica®.
A sophisticated control system for the array has been designed, built and tested. The system provides 160 computer controlled 10 bit analog control lines to drive the array. Sampling of various system parameters is made possible through the use of a 96 channel, 12 bit analog to digital converter system. This system provides 4 mV resolution and a 440 Hz sampling rate for each of the 96 measurement channels.
Masters Thesis, The University of Arizona, 1996. UMI# 1387710

Controlled Defect Microwave Bandgap Crystal Experiments, M.J. Hill, R.W. Ziolkowski

U.R.S.I National Radio Science Meeting, University of Colorado at Boulder, January 2000.

A High Performance K-Band Diplexer using High-Q Micromachined Cavities, Michael J. Hill, John Papapolymerou and Richard W. Ziolkowski

Proceedings of the 30th European Microwave Conference, October 2000.

Realization of an Active Narrow Band Filter with Electronically Controlled Defects in a Microwave Bandgap Structure, Michael J. Hill, John Papapolymerou and Richard W. Ziolkowski

Proceedings of the 30th European Microwave Conference, October 2000.

Reconfigurable electromagnetic bandgap structures: modeling and experiments, Richard W. Ziolkowski, Michael J. Hill, and John Papapolymerou

Joint IEEE AP-S / URSI B Session 77, IEEE APS International Symposium and USNC/URSI National Radio Science Meeting, Salt Lake City, UT, July, 2000.

Reduced cost, miniaturized microwave devices for wireless communications, MJ Hill, C. Tavernier, H. Hsu, J. Ives, C. Wai, R.W. Ziolkowski and J. Papapolymerou

The University of Arizona Student Showcase, November 2000.

Simulated and Measured Results from a Duroid Based Planar MBG Cavity Resonator Filter, Michael J. Hill, Richard W. Ziolkowski, and John Papapolymerou

Microwave and Guided Wave Letters, Vol. 10, No. 12, December 2000, pp. 528-530.

Electronically Controlled Microwave Bandgap Filter Structures, Michael J. Hill, Richard W. Ziolkowski, and John Papapolymerou

Applied Physics Letters, Vol. 78, No. 7, February 2001, pp. 1008-1010.

Reconfigurable and Micromachined Microwave Structures, Michael J. Hill

Ph.D. Dissertation, The University of Arizona, May 2001. UMI# 3010204

A High-Q Reconfigurable Planar EBG Cavity Resonator, Michael J. Hill, Richard W. Ziolkowski, and John Papapolymerou

Microwave and Wireless Components Letters, Vol. 11, No. 6, June 2001, pp. 255-257.

Small Antennas for Wireless Applications, Michael J. Hill

Invited short course, The 30th European Microwave Conference, London, England, September 2001.

High-Q Micromachined Resonant Cavities in a K-Band Diplexer Configuration, Michael J. Hill, John Papapolymerou and Richard W. Ziolkowski

IEE Proceedings - Microwaves, Antennas and Propagation, Vol. 148, No. 5, October 2001, pp. 307-312.

A Planar X-Band Electromagnetic Band-Gap (EBG) 3-Pole Filter, H.. Hsu, Michael J. Hill, John Papapolymerou and Richard W. Ziolkowski

Microwave and Wireless Components Letters, Vol. 12, No. 7 July 2002, pp 255-257.

A Duroid Based Planar EBG Cavity Resonator Filter with Improved Quality Factor, H.. Hsu, Michael J. Hill, Richard W. Ziolkowski, and John Papapolymerou

IEEE Antennas and Wireless Propagation Letters, Vol. 1, No. 2 2002, pp 67-70.

Variations in Package Radiation Due to Changes in On-Die and On-Package Capacitance, Michael J. Hill, Jiang-qi He, Parshant Parmar

Proceedings of the 53rd Electronic Components and Technology Conference, New Orleans, LA, May 27-30, 2003.

Capacitor Parameter Extraction - Techniques and Challenges, Michael J. Hill, Leigh Wojewoda

Intel Technology Symposium, San Jose, CA, Sept. 16-17, 2003.

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Keywords:Micromachining, Microwave Band Gap, PBG, Controlled Defects,High Q Diplexer,Hyperthermia,Active Microwave Phased Array, PIN Diode.