HUFF et al.: DIRECTIONAL RECONFIGURABLE ANTENNAS ON LAPTOP COMPUTERS
3227
ranking was altered only by functionality not considered in the
Shenghui Zhang (S'02) received the B.S. degree
from the Beijing Institute of Technology, Beijing,
EVS initial analysis. Therefore, techniques such as the EVS,
China and the M.S. degree in electrical engineering
coupled with experimental investigation and verification, can be
from the China Academy of Space Technology,
used to determine the conditions under which a reconfigurable
China, in 1994 and 1997, respectively. She is
currently working toward the Ph.D. degree in the
antenna can be successfully integrated onto a host structure.
Department of Electrical and Computer Engineering
at the University of Illinois at Urbana-Champaign.
Her current research involves reconfigurable
ACKNOWLEDGMENT
microstrip antennas and electrically small antennas
The authors thank the reviewers for their helpful comments.
(ESA). Her research interests include millimeter
wave and microwave antennas and circuits, reconfigurable antennas, and
electromagnetic compatibility.
REFERENCES
[1] M. Liebendörfer and U. Dersch, "Wireless LAN diversity antenna
system for PCMCIA card integration," in Proc. IEEE 47th Vehicular
Garvin Cung received the B.S. degree in electrical
Technology Conf., vol. 3, 1997, pp. 20222026.
engineering from the University of Illinois at Urbana-
[2] M. Russel, J. Preiss, S. Donaldson, F. Beltran, and A. Marinilli, "Hinged,
Champaign, in 2003, where he is currently working
polarization diverse WLAN antenna," in Proc. IEEE MTT-S Symp. Tech-
toward the M.S. degree.
nologies for Wireless Applications, vol. 1, 1997, pp. 4750.
He is a Research Assistant in the Electromagnetics
[3] D. A. Strohschein and J. T. Bernhard, "Evaluation of a novel integrated
Laboratory, University of Illinois at Urbana-Cham-
antenna assembly for mobile data networks using laptop computers," in
paign. His current interests include wideband
Proc. IEEE Antennas and Propagation Society Int. Symp., vol. 4, 1998,
antennas and microwave circuits.
pp. 19621965.
[4] M. Ali, M. Okoniewski, M. A. Stuchly, and S. S. Stuckly, "Dual-fre-
quency strip-sleeve monopole for laptop computers," IEEE Trans. An-
tennas and Propagation, vol. 47, pp. 317-323, Feb. 1999.
[5] S. Ponnapalli, "Modeling and design for RF wireless systems," IEEE
Trans. Comp., Packag. Manufact. Technol.--A, vol. 19, pp. 487502,
Jennifer T. Bernhard (S'89M'95SM'01) was
Aug. 1996.
born on May 1, 1966, in New Hartford, NY. She
[6] D. Liu, E. Flint, and B. Gaucher, "Integrated laptop antennas--Design
received the B.S.E.E. degree from Cornell Univer-
and evaluation," in Proc. IEEE Antennas Propagation Society Int. Symp.,
sity, Ithaca, NY, in 1988, and the M.S. and Ph.D.
vol. 4, 2002, pp. 5659.
degrees in electrical engineering from Duke Univer-
[7] G. Huff, J. Feng, S. Zhang, and J. T. Bernhard, "A novel radiation pat-
sity, Durham, NC, in 1990 and 1994, respectively,
tern and frequency reconfigurable single turn square microstrip spiral
with support from a National Science Foundation
antenna," IEEE Microwave Wireless Components Lett., vol. 13, no. 2,
Graduate Fellowship.
pp. 5759, Feb. 2003.
While at Cornell, she was a McMullen Dean's
[8] J. T. Bernhard, "Analysis of integrated antenna positions on a laptop
Scholar and participated in the Engineering Co-op
computer for mobile data communication," in Proc. IEEE Antennas
Program, working at IBM Federal Systems Division,
Propagation Society Int. Symp., vol. 4, 1997, pp. 22102213.
Owego, NY. During the 199495, academic year she held the position of
[9] XFDTD©, Remcom, Inc., State College, PA, 16801. v5.3.
Postdoctoral Research Associate with the Departments of Radiation Oncology
and Electrical Engineering, Duke University, where she developed RF and
microwave circuitry for simultaneous hyperthermia (treatment of cancer with
microwaves) and magnetic resonance imaging thermometry. At Duke, she was
also an organizing member of the Women in Science and Engineering (WISE)
Greg H. Huff (S'03) was born in Oklahoma City,
Project, a graduate student-run organization designed to improve the climate
OK, in 1975. He received the B.S. and M.S. degrees
for graduate women in engineering and the sciences. From 1995 to 1999,
from the University of Illinois at Urbana-Champaign,
she was an Assistant Professor in the Department of Electrical and Computer
in 2000 and 2003, respectively, where he is currently
Engineering, University of New Hampshire, Durham, where she held the Class
working toward the Ph.D. degree in the Electromag-
of 1944 Professorship. In 1999 and 2000, she was a National Aeronautics
netics Laboratory.
and Space Administration-American Society for Engineering Education
His current research involves tunable microwave
(NASA-ASEE) Summer Faculty Fellow at the NASA Glenn Research Center,
and millimeter wave devices and reconfigurable an-
Cleveland, OH. From 1999 to 2003, she was an Assistant Professor in the
tennas as well as electromagnetic compatibility and
Department of Electrical and Computer Engineering, University of Illinois
packaging of high frequency circuits.
at Urbana-Champaign (UIUC), where since 2003, she has held the position
Mr. Huff was awarded the 2003 Motorola Center
of Associate Professor. She is also a UIUC College of Engineering Willett
for Communications Graduate Fellowship at the University of Illinois at Ur-
Faculty Scholar and a Research Associate Professor in UIUC's Micro and
bana-Champaign. He was the co-recipient of the 2004 H. A. Wheeler Applica-
Nanotechnology Laboratory. Her industrial experience includes work as a
tions Prize Paper Award from the IEEE Antenna and Propagation Society.
Research Engineer with Avnet Development Laboratories and, more recently,
as a private Consultant for members of the wireless communication community.
She is also a member of the editorial board of Smart Structures and Systems.
Her research interests include reconfigurable and wideband microwave an-
tennas and circuits, wireless sensors and sensor networks, high speed wireless
Judy Feng was born in Urbana, IL, on April 12,
data communication, electromagnetic compatibility, and electromagnetics for
1979. She received the B.S. and M.S. degrees in elec-
industrial, agricultural, and medical applications.
trical engineering from the University of Illinois at
Prof. Bernhard is a Member of Tau Beta Pi, Eta Kappa Nu, Sigma Xi,
Urbana-Champaign, in 2001 and 2003, respectively.
and ASEE. She received the NSF CAREER Award in 2000. She and her
In September 2003, she joined BAE Systems,
students received the 2004 H. A. Wheeler Applications Prize Paper Award
Information and Electronic Warfare Systems, Merri-
from the IEEE Antenna and Propagation Society for their paper published
mack, NH, where she is currently an Antenna Design
in the March 2003 issue of the IEEE TRANSACTIONS ON ANTENNAS AND
Engineer, working on various UHF and VHF an-
PROPAGATION. Since 2001, she has served as an Associate Editor for IEEE
TRANSACTIONS ON ANTENNAS AND PROPAGATION and IEEE ANTENNAS AND
tennas for government and military applications. Her
WIRELESS PROPAGATION LETTERS. She is serving as an Elected Member of
current interests include microstrip patch antennas,
the IEEE Antennas and Propagation Society's Administrative Committee from
transistor oscillators, RF systems and microwave
2004 to 2006.
circuits.