DocumentCode :
959060
Title :
Scan blindness phenomenon in conformal finite phased arrays of printed dipoles
Author :
Ertürk, Vakur B. ; Bakir, Onur ; Rojas, Roberto G. ; Güner, Baris
Author_Institution :
Dept. of Electr. & Electron. Eng., Bilkent Univ., Turkey
Volume :
54
Issue :
6
fYear :
2006
fDate :
6/1/2006 12:00:00 AM
Firstpage :
1699
Lastpage :
1708
Abstract :
Scan blindness phenomenon for finite phased arrays of printed dipoles on material coated, electrically large circular cylinders is investigated. Effects on the scan blindness mechanism of several array and supporting structure parameters, including curvature effects, are observed and discussed. A full-wave solution, based on a hybrid method of moments/Green´s function technique in the spatial domain, is used to achieve the aforementioned goals. Numerical results show that the curvature affects the surface waves and hence the mutual coupling between array elements. As a result, the array current distribution of arrays mounted on coated cylinders are considerably different compared to similar arrays on planar platforms. Therefore, finite phased arrays of printed dipoles on coated cylinders show different behavior in terms of scan blindness phenomenon compared to their planar counterparts. Furthermore, this phenomenon is completely different for axially and circumferentially oriented printed dipoles on coated cylinders suggesting that particular element types might be important for cylindrical arrays.
Keywords :
Green´s function methods; antenna phased arrays; conformal antennas; current distribution; dipole antenna arrays; method of moments; microstrip antenna arrays; Green´s function technique; array current distribution; circular cylinder; conformal finite phased array; full-wave solution; method of moment; printed dipole antenna; scan blindness phenomenon; Antenna arrays; Blindness; Current distribution; Dielectric substrates; Dipole antennas; Engine cylinders; Moment methods; Mutual coupling; Phased arrays; Surface waves; Coated cylinders; Green´s function; conformal arrays; method of moments (MoM); scan blindness;
fLanguage :
English
Journal_Title :
Antennas and Propagation, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-926X
Type :
jour
DOI :
10.1109/TAP.2006.875482
Filename :
1638365
Link To Document :
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