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Transmission properties of finite curved slot arrays were investigated based on an extension of mutual admittance approach. One-dimensional curvature effects were analyzed, with the influence of column number and flare angle on magnetic current distribution, scattering patterns and frequency response curves. Results show that the curvature effect depends on the flare angle. When the flare angle is large (above 120°), strong curvature effect leads to violent fluctuation of magnetic current distribution, wide beamwidth and high side lobes, and considerable changes also occur in frequency-response characteristics, including resonant frequency, transmission bandwidth and transmission coefficient. When the flare angle is small enough, generally below 60°, only the magnetic current distributions of marginal elements would get influenced, consequently the scattering patterns and transmission characteristics are similar to those of finite planar arrays. The curvature effect may became very weak and be ignored on this condition.
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Keywords:
- frequency selective surface /
- slot arrays /
- transmission properties /
- curvature
[1] Mittra R, Chan C H, Cwik T 1988 Proceedings of the IEEE 76 1593
[2] Munk B A 2000 Frequency Selective Surfaces: Theory and Design (New York: John Wiley)
[3] Gao J Song, Li X Q, Sun L C, Zhao J L 2008 Acta Phys. Sin. 57 3803 (in Chinese) [高劲松、 李小秋、 孙连春、 赵晶丽 2008 57 3803]
[4] Feng X G, Gao J S, Jia H Y 2009 Chin. Phys. B 18 1227
[5] Pelton E L, Munk B A 1974 IEEE Trans. on Anennas and Propagation AP 22 799
[6] Cwik T, Mittra R 1988 IEEE Trans. on Antennas and Propagation 36 612
[7] Caroglanian A, Webb K J 1991 IEEE Trans. on Antennas and Propagation 39 211
[8] Allam A M, Parker E A 1987 IEE proceedings H, Microwave, Antennas & Propagation 134 521
[9] Philips B, Parker E A, Langley R J 1993 Electronics Letters 29 882
[10] Parker E A, Philips B 1996 IEE Colloquium on Advances in Electromagnetic Screens, Radomes and Materials 5/1
[11] Philips B, Parker E A, Langley R J 1995 IEE Proceedings of Microwaves, Antennas & Propagation 142 193
[12] Yu C, Lu C C 2005 Microwave & Optical Tech. Letters 45 107
[13] Stupfel B, Pion Y 2005 IEEE Trans. on Antennas and Propagation 53 1415
[14] Munk B A 2003 Finite Antenna Arrays and FSS (New York: John Wiley)
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[1] Mittra R, Chan C H, Cwik T 1988 Proceedings of the IEEE 76 1593
[2] Munk B A 2000 Frequency Selective Surfaces: Theory and Design (New York: John Wiley)
[3] Gao J Song, Li X Q, Sun L C, Zhao J L 2008 Acta Phys. Sin. 57 3803 (in Chinese) [高劲松、 李小秋、 孙连春、 赵晶丽 2008 57 3803]
[4] Feng X G, Gao J S, Jia H Y 2009 Chin. Phys. B 18 1227
[5] Pelton E L, Munk B A 1974 IEEE Trans. on Anennas and Propagation AP 22 799
[6] Cwik T, Mittra R 1988 IEEE Trans. on Antennas and Propagation 36 612
[7] Caroglanian A, Webb K J 1991 IEEE Trans. on Antennas and Propagation 39 211
[8] Allam A M, Parker E A 1987 IEE proceedings H, Microwave, Antennas & Propagation 134 521
[9] Philips B, Parker E A, Langley R J 1993 Electronics Letters 29 882
[10] Parker E A, Philips B 1996 IEE Colloquium on Advances in Electromagnetic Screens, Radomes and Materials 5/1
[11] Philips B, Parker E A, Langley R J 1995 IEE Proceedings of Microwaves, Antennas & Propagation 142 193
[12] Yu C, Lu C C 2005 Microwave & Optical Tech. Letters 45 107
[13] Stupfel B, Pion Y 2005 IEEE Trans. on Antennas and Propagation 53 1415
[14] Munk B A 2003 Finite Antenna Arrays and FSS (New York: John Wiley)
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