DocumentCode :
3445639
Title :
A new class of wide-band microstrip arrays
Author :
Herscovici, Naftali
Author_Institution :
Spike Broadband Systems Inc., Nashua, NH, USA
fYear :
2001
fDate :
2001
Firstpage :
211
Lastpage :
214
Abstract :
Wide-band microstrip antennas are still a challenge and a number of new configurations were reported. Most of these configurations are multilayer patch antennas and some of them achieving up to 40% in bandwidth. Another new geometry was reported previously, a single patch fed by a three-dimensional feed line, which in essence is a very tall patch fed by a wide-band dipole. This antenna is reported to exhibit a 90-100% bandwidth in terms of for VSWR<2:1; towards the high end of the band, however, the radiation from the wide-band dipole is too strong and interferes with the patch pattern resulting in a high cross-polarization level. In the array environment, though, the cross-polarization is reduced by the array factor. The paper analyzes the performance of an eight-element array and its scanning capabilities. To avoid grading lobes the radiating elements have to be very close to each other, so the impact of the mutual coupling is also investigated
Keywords :
antenna radiation patterns; dipole antennas; electromagnetic coupling; electromagnetic wave polarisation; microstrip antenna arrays; scanning antennas; VSWR; array factor; bandwidth; eight-element array; high cross-polarization level; multilayer patch antennas; mutual coupling; patch pattern; performance analysis; radiating elements; scanning antenna array; three-dimensional feed line; wide-band dipole; wide-band microstrip arrays; Bandwidth; Broadband antennas; Dipole antennas; Feeds; Geometry; Microstrip antenna arrays; Microstrip antennas; Nonhomogeneous media; Patch antennas; Wideband;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Radio and Wireless Conference, 2001. RAWCON 2001. IEEE
Conference_Location :
Waltham, MA
Print_ISBN :
0-7803-7189-5
Type :
conf
DOI :
10.1109/RAWCON.2001.947613
Filename :
947613
Link To Document :
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