Neurodesıgn Of Log-Perıodıc Dıpole Arra Ys

Year 1999, Volume: 12 Issue: 2, 18 - 34, 31.12.1999

Kerim Güney Mehmet Erler Şeref Sağıroğlu

Abstract

The ıksign of log-periodic dipole arrays, hased on anificial ııeural

nel-Hvrks, is presenled. The extended-deüa-bar-delta algorithm ıs ıısed to train the

ııelıvorks. The desigı-ı resııüs obtained by using Ihe murat models are in very good

agreemunt wilh the resıılts avaitable in Ihe literalure.

Keywords

log-penodic dipole arrays, artificial neural ııetu'orts.

Log-Perîyodîk Dipol Dîzîlerin Nöral Tasarımı

Abstract

Yapay sınır ağiarım dayanan bir metot, log-periyodik dmlermm tasarımı için

^liim/mıiftıır. Ağları eğitmek, için, genişlelilmif della-bar-della algoritması

/ıııllaııılnn. flır. Nöral modeller kullamlarak elde edilen tasarım sonuçları, literatürdeki

mevcut sonuçlarla ııyvmluhık içindedir.

Keywords

Log-penyodik dipol dizileri, )'apay sinir ağlarTî.

References

• [l] C.A. Balanis, ''Antenncı Theory: Anaîysîs and Deşiğe, John Wıley & Sons, New York, 1982.
• [2] E.A. Wolff, "Antenna Analysis", Artech House, Norwood, 1988.
• [3] R.L. Carrel, "Analysis and Design of the Log-Periodic Dipoîe Antemıa", Ph.D. Dissertation, Elec. Eng. Dcpt., University oflllinois, 1961
• [4] D. E. Rumelhart and J. L. McCIelland, "Parallel Dıstributed Processing", Vol. l, The MFTPress, Cambridge, 1986.
• f5] A. Maren; C. Harstan, and R. Pap, İİHandbook of Neu rai Computmg Appîications", London: Academic Press. ISBN 0-12-471260-6. 1990.
• [6] S. Haykin, Neural Networks' A Comprehemive Foundaîion", New York: Macmillan College Publıshing Company, ISBN 0-02-352761-7, 1994.
• [7] Neıırai Compııtmg, A TechnoîogyHandbookforProfesswnaîII/PLUSandNeuralWorks Explorer , Pıttsburgh: NeuraIWare, Inc., Technical Publications Group, 1996.
• [8] S. E. Fahlman, "An Emprical Stîidy of Leaming Speed m Backpropagaîion Net^'orks", Technicol Report CMU-CS-88-162, Camegie Mellon University, June 1988.
• [9] R, A. Jacobs, Increased ratc of convergence through leaming ratc adaptation", Neural Netuvrks, vlo], pp. 295-307, 1988.
• [lü] G. Mirchandani and W. Cao, "On hidden nodes for neural ncts", IEEE Transactions on Circınîs andSystems, vol. 36, no. 5, pp. 661-664, 1989.
• [l l] D. L. Chester, "Why Two Hidden Layers Are Better Than Oııe", Proc. Int. Joint Conf. on Neural Netn'orks, Jan. 1990, Washington, DC, vol. l, pp 265-268.
• [î2] A. A. Minai and R. D. Wılliams, "Acceleration of Backpropagation Through Leaming Rate and Momentum Adaptation", Int. Joint Conf. on Neural Netn'orks, Jan. 1990, Washington, DC, vol. l, pp. 676-679.
• [13] W. Y. Huang and Y. F. Huang, "Bounds on the number of hıdden neurons in multilavered perceptron , ÎEEE Trans. on Neuraî Networks, vol. l, no.4, pp. 47-55, 1991.
• [14] P. Burrascano, S. Fiori. aııd M. Mongiardo, "A revievv of artificial neural networks apphcations in microwave computer-aided design", Int. J. of RF and Microwave Computer-Aıded Engmeenng, vol 9, pp, 158-174, 1999.
• [15] D. T. Pham and S. Sagiroglu, "Three methods of training multı-layer perceptrons to model a robot sensor", Robotıca, vol, 13, pp. 531-538, 1996. [16] D T. Pham and S, Sagiroglu, "Synergistic neural models of a robot sensor fer part oncntatıon dctection", LUechE, Proc. Instn. Meck. Engrs., vol. 210, pp. 69-76, 1996.
• [17] S Sagiroglu and K. Gıiney, "Calculation of resonant frequency fer an cquilateral triangular microstnp antenna using artifıcial ncural networks", Microvave Opt. Technal. Letl., vol. 14, no. 2, pp. 89-93, 1997.
• ^ ?; saSiroglu, K. Güney, and M. Erler, "Neural Computatıon of Mutual Coupling Coefficient of EIectncally Thin and Thıclc Rectangular Microstrip Antennas", Proc. of Intcmationa! Confcrence on Neural Network and Brain (NN&B'98^, Oct. 27-30, 1998,
• Beijing, China, pp. 223-226.
• [19] S. Sagıroglu, K. Güney, and M. Erler, "Resonant frequency calculation for cireular mıcrostnp amennas usmg artıficial neural networks", Int. J. of RF Micravave and Millımner-fVave Computer-Aided Eııgineering., vol. 8, pp. 270-277, 1998.
• ^ K' Güney' M- Erle''- a"d s- Sagiroglu, "Neural Computation of Mutual Couplıng Coefficient Bctween Two Rectangular Microstrip Antennas With Various Substrate Thicknesses" Proc. ofPIERS'98, July 13-17, 1998, Nantes, France, pp. 57.
• [21] S. Sagıroglu, K. Güney, and M. Erler, "Calculation ofbanduidth for electrically thin and î!c reI:ta"Sula'' nricrostrip antennas with the use of multilayered perceptrons", ini. J. of RFandMıcrowave Compııler-Aided Engmeering, vol. 9, pp. 277-286, 1999.
• |22] D. Karaboga, K. Güney, S. Sagiroglu, and M. Erler, "Neural coraputation of resonant frequency of elcctrically thin and thick rectangular microstrip antennas", IEE Proceedıııgs-Micromves, Antennas and Propagation, Pt. ff., vol, 146, pp. 155-159, 1999
• ^ ^ D- Ml I'°zar' "Alltenna Design Using Personal Computers", Artech House. Dedham. MA. 1985.