IEICE Transactions on Communications

IEICE Transactions on Communications 2008 E91-B(2):527-535; doi:10.1093/ietcom/e91-b.2.527

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Copyright © 2008 The Institute of Electronics, Information and Communication Engineers

Regular Section -- Papers -- Antennas and Propagation

Isosceles-Trapezoidal-Distribution Edge Tapered Array Antenna with Unequal Element Spacing for Solar Power Satellite

A.K.M. BAKI^1,2, Kozo HASHIMOTO¹, Naoki SHINOHARA¹, Tomohiko MITANI¹ and Hiroshi MATSUMOTO¹

¹ The authors are with Research Institute for Sustainable Humanosphere (RISH), Kyoto University, Uji-shi, 611-0011 Japan. E-mail: baki{at}secs.iub.edu.bd, ² Presently, with the Independent University, Bangladesh.

The Earth will require sustainable electricity sources equivalent to 3 to 5 times the commercial power presently produced by 2050. Solar Power Satellite (SPS) is one option for meeting the huge future energy demand. SPS can send enormous amounts of power to the Earth as the form of microwave (MW). A highly efficient microwave power transmission (MPT) system is needed for SPS. A critical goal of SPS is to maintain highest Beam Efficiency (BE) because the microwaves from SPS will be converted to utility power unlike the MW from communication satellites. Another critical goal of SPS is to maintain Side Lobe Levels (SLL) as small as possible to reduce interference to other communication systems. One way to decrease SLL and increase BE is the edge tapering of a phased array antenna. However, tapering the excitation requires a technically complicated system. Another way of achieving minimum SLL is with randomly spaced element position but it does not guarantee higher BE and the determination of random element position is also a difficult task. Isosceles Trapezoidal Distribution (ITD) edge tapered antenna was studied for SPS as an optimization between full edge tapering and uniform amplitude distribution. The highest Beam Collection Efficiency (BCE) and lowest SLL (except maximum SLL) are possible to achieve in ITD edge tapering and ITD edge tapered antenna is technically better. The performance of ITD is further improved from the perspective of both Maximum Side Lobe Level (MSLL) and BE by using unequal spacing of the antenna elements. A remarkable reduction in MSLL is achieved with ITD edge tapering with Unequal element spacing (ITDU). BE was also highest in ITDU. Determination of unequal element position for ITDU is very easy. ITDU is a newer concept that is experimented for the first time. The merits of ITDU over ITD and Gaussian edge tapering are discussed.

Key Words: SPS, microwave power transmission, phased array, unequally spaced array, antenna tapering

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Manuscript received March 9, 2007. Manuscript revised June 22, 2007.

Reference

[1] H. Matsumoto, "Research on solar power satellites and microwave power transmission in Japan," IEEE Microw. Mag., vol.3, no.4, pp.36–45, 2002.

[2] D.R. Criswell, "Solar power via the moon," The Industrial Physicist, American Institute of Physics, vol.8, no.2, pp.12–15, April/May 2002.

[3] S. Rahman, "Green power: What is it and where can we find it?" IEEE Power & Energy magazine, vol.1, no.1, pp.30–37, Jan./Feb. 2003.

[4] P.E. Glaser, "Power from the sun; its future," Science, vol.162, pp.857–861, Nov. 1968.

[5] W.L. Stutzman and G.A. Thiele, Antenna Theory and Design, 2nd ed., p.296, John Wiley & Sons, 1998.

[6] A.K.M. Baki, N. Shinohara, H. Matsumoto, K. Hashimoto, and T. Mitani, "Study of isosceles trapezoidal edge tapered phased array antenna for solar power station/satellite," IEICE Trans. Commun., vol.E90-B, no.4, pp.968–977, April 2007.

[7] T. Uno and S. Adachi, "Optimization of aperture illumination for radio wave power transmission," IEEE Trans. Antennas Propag., vol.AP-32, no.6, pp.628–632, June 1984.

[8] C.T. Rodenbeck and K. Chang, "A limitation on the small-scale demonstration of retrodirective microwave power transmission from the solar power satellite," IEEE, Antennas Propag. Mag., vol.47, no.4, pp.67–72, Aug. 2005.

[9] R.M. Dickinson, "Magnetron directional amplifier space power beamer concept design," IECEC, 35th Intersociety Conference, vol.2, pp.1469–1479, July 2000.

[10] F.E. Little, S.J. Kokel, C.T. Rodenbeck, K. Chang, G.D. Arndt, and P.H. Ngo, "Development of a retrodirective control transmitter for wireless power transmission," Radio Science Bulletin, no.311, pp.38–46, Dec. 2004.

[11] J.O. McSpadden and J.C. Mankins, "Space solar power programs and microwave wireless power transmission technology," IEEE Microw. Mag., vol.3, no.4, pp.46–57, 2002.

[12] S.S. Shaposhnikov, R.B. Vaganov, and N.N. Voitovich, "Antenna amplitude distributions for improved wireless power transmission efficiency," IEEE AFRICON. 6th, vol.2, pp.559–562, Oct. 2002.

[13] R.B. Vaganov, "Maximum power transmission between two apertures with the help of a wave beam," J. Communication Technology and Electronics, vol.42, no.4, p.430, 1997.

[14] Y. Rahmat-Samii, D. Gies, and J. Robinson, "Particle swarm optimization (PSO): A novel paradigm for antenna designs," Radio Science Bulletin, no.305, pp.14–22, Sept. 2003.

[15] Fung.I. Tseng, "Design of array and line-source antennas for Taylor patterns with a null," IEEE Trans. Antennas Propag., vol.AP-27, no.4, pp.474–479, July 1979.

[16] A. Safaai-Jazi, "A new formulation of the design of Chebyshev arrays," IEEE Trans. Antennas Propag., vol.42, no.3, pp.439–443, 1994.

[17] V.R. Garmash, B.Z. Katsenelenbaum, S.S. Shaposhnikov, V.N. Tioulpakov, and R.B. Vaganov, "Some pecularities of the wave beams in wireless power transmission," IEEE Aerosp. Electron. Syst. Mag., vol.13, no.10, pp.39–41, Oct. 1998.

[18] V.N. Garmash and S.S. Shaposhnikov, "Matrix method synthesis of transmitting antenna for wireless power transmission," IEEE Trans. Aerosp. Electron. Syst., vol.36, no.4, pp.1142–1148, Oct. 2000.

[19] M.I. Skolnik, J.W. Sherman, III, and F.C. Ogg, Jr., "Statistically designed density-tapered arrays," IEEE Trans. Antennas Propag., vol.12, no.4, pp.408–417, July 1964.

[20] W.C. Brown and E. Eugene Eves, "Beamed microwave power transmission and its application to space," IEEE Trans. Microw. Theory Tech., vol.40, no.6, pp.1239–1250, June 1992.

[21] G. Goubau and F. Schwering, "On the guided propagation of electromagnetic wave beams," IRE Trans. Antennas Propag., vol.AP-9, pp.248–256, 1961.

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This Article Abstract Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Alert me to new issues of the journal Add to My Personal Archive Download to citation manager Request Permissions Google Scholar Articles by BAKI, A.K.M. Articles by MATSUMOTO, H. Search for Related Content Social Bookmarking          What's this?