Nonlinear analysis, design and radiation study of a single-beam CORPS-like active antenna array feed network integrated with single power amplifier, using a frequency-dependent behavioral model

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• 作者：Reza Zaker (1)
  Abdolali Abdipour (1)
  Ahad Tavakoli (1)
  Rashid Mirzavand (1)
  
• 关键词：Active array antenna ; Array feed network (AFN) ; Coherently radiating periodic structure ; Inter ; modulation distortion ; Nonlinear behavioral model ; Frequency ; dependent model ; Nonlinear analysis
• 刊名：Analog Integrated Circuits and Signal Processing
• 出版年：2014
• 出版时间：December 2014
• 年：2014
• 卷：81
• 期：3
• 页码：703-722
• 全文大小：3,635 KB
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  2. Denidni, T. A., & Nedil, M. (2008). Experimental investigation of a new Butler matrix using slotline technology for beamforming antenna arrays. / IET Microwaves, Antennas & Propagation, / 2(7), 641-49. CrossRef
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  12. Zaker, R., Abdipour, A., & Tavakoli, A. (2014). Full-wave simulation, design and implementation of a new combination of antenna array feed network integrated in low profile microstrip technology. / Analog Integrated Circuits and Signal Processing. doi:10.1007/s10470-014-0325-x .
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  15. Li, L., Hong, W., Zhang, Y., Chen, Z., & Chen, P. (2014). Design and implementation of an active array antenna with remote controllable radiation patterns for mobile communications. / IEEE Transactions on Antennas and Propagation, / 62(2), 913-21. CrossRef
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• 作者单位：Reza Zaker (1)
  Abdolali Abdipour (1)
  Ahad Tavakoli (1)
  Rashid Mirzavand (1)
  
  1. Microwave/Millimeter Wave and Wireless Communication Research Laboratory, Electrical Engineering Department, Amirkabir University of Technology, 424 Hafez Ave, P.O. Box: 15875-4413, Tehran, Iran
  
• ISSN：1573-1979

文摘

A polynomial behavioral model of an appropriate single solid state power amplifier (SSPA) integrated with a coherently-radiating-periodic-structure-based antenna array feed network (C-AAFN) is proposed. For the first time, nonlinearity effects of the SSPA on this type of linear microstrip-patch-based C-AAFN are investigated while the proposed structure does not require the use of matching circuit including chip resistor and through-substrate VIA hole and thus reduces the manufacturing difficulties, cost and design complexity. This work assesses the radiation pattern changes including phantom and fundamental beams and positions, efficiency, side lobe level, and the 3?dB beamwidth generated by intermodulation products (IMPs). Here, cases of a single transmit signal and two-tone signal within a single beam operation are analyzed. In these cases, analytical expressions for radiation array factor as a function of frequency and amplitude of the input signal, frequency-dependent parameters of the behavioral model, IMPs, Transfer matrix of C-AFN, the position of the array antennas and angular direction are developed especially in nonlinear region of the SSPA. In order to achieve accurate nonlinear results, the feed network is redesigned with synchronized signal paths and symmetric linear phase without amplitude mismatch. In addition, the SSPA as an active module is designed and fabricated at 3.5?GHz and necessary experiments including single-tone AM/AM and AM/PM in different frequencies around 3.5?GHz were done to propose a semi-dynamic behavioral model with frequency-dependent coefficients. The model is then validated by a two-tone power test. These experiments are performed on the feed network and C-AAFN and their results are compared with the results, obtained by the analytical equations in two cases, with and without total loss of the system. Moreover, the proposed model is compared with similar behavioral models with constant coefficients and reduced-order case. The necessary discussions and good agreement between the results are presented.