DocumentCode :
1303505
Title :
Design, Simulation, Fabrication and Testing of Flexible Bow-Tie Antennas
Author :
Durgun, Ahmet Cemal ; Balanis, Constantine A. ; Birtcher, Craig R. ; Allee, David R.
Author_Institution :
Sch. of Electr., Comput. & Energy Eng., Arizona State Univ. (ASU), Tempe, AZ, USA
Volume :
59
Issue :
12
fYear :
2011
Firstpage :
4425
Lastpage :
4435
Abstract :
Design, simulation, fabrication and measurement of two different novel flexible bow-tie antennas, a conventional and a modified bow-tie antenna with reduced metallization, are reported in this paper. The antennas are mounted on a flexible substrate fabricated at the Flexible Display Center (FDC) of Arizona State University (ASU). The substrate is heat stabilized polyethylene naphthalate (PEN) which allows the antennas to be flexible. The antennas are fed by a microstrip-to-coplanar feed network balun. The reduction of the metallization is based on the observation that the majority of the current density is confined towards the edges of the regular bow-tie antenna. Hence, the centers of the triangular parts of the conventional bow-tie antenna are removed without compromising significantly its performance. The return losses and radiation patterns of the antennas are simulated with HFSS and the results are compared with measurements, for bow-tie elements mounted on flat and curved surfaces. The comparisons show that there is an excellent agreement between the simulations and measurements for both cases. Furthermore, the radiation performance of the modified bow-tie antenna is verified, by simulations and measurements, to be very close to the conventional bow-tie.
Keywords :
antenna radiation patterns; baluns; bow-tie antennas; microstrip antennas; planar antennas; HFSS; flexible bow-tie antennas; heat stabilized polyethylene naphthalate; metallization reduction; microstrip-to-coplanar feed network balun; radiation pattern; reduced metallization; return losses; Antenna measurements; Antenna radiation patterns; Broadband antennas; Impedance matching; Loss measurement; Microstrip; Bow-tie antenna; broadband antenna; flexible antenna; heat stabilized PEN; microstrip-to-coplanar feed network balun;
fLanguage :
English
Journal_Title :
Antennas and Propagation, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-926X
Type :
jour
DOI :
10.1109/TAP.2011.2165511
Filename :
5993500
Link To Document :
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