Analysis of scattering by a large array of waveguide-fed wide-slot millimeter wave antennas using precorrected-FFT algorithm

• Published in: IEEE microwave and wireless components letters Vol. 15; no. 11; pp. 772 - 774
• Main Authors: Zhang, Min, Li, Le-Wei, Ma, An-Ying
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01.11.2005; Institute of Electrical and Electronics Engineers
• Subjects: Algorithm design and analysis; Antenna arrays; Antennas; Applied sciences; Circuit properties; Diffraction, scattering, reflection; Electric, optical and optoelectronic circuits; Electromagnetic (EM) scattering; Electronics; Exact sciences and technology; Fourier transforms; Integral equations; method-of-moments (MoM); Microwave circuits, microwave integrated circuits, microwave transmission lines, submillimeter wave circuits; Millimeter wave technology; Moment methods; precorrected-fast Fourier transform (P-FFT) method; Radiocommunications; Radiowave propagation; Scattering; Slot antennas; Telecommunications; Telecommunications and information theory; Testing; Transmission line matrix methods; waveguide-fed slot antennas; Electromagnetic wave scattering; Performance evaluation; precorrected-fast Fourier transform (P-FFT) method; Fast Fourier transformation; method-of-moments (MoM); Moment method; Microwave; Slotted waveguide; Algorithm; Electromagnetic wave; Slot antenna arrays; Magnetic measurement; Millimetric wave; Accuracy; Waveguide array; Electromagnetic wave propagation; Slot antenna; Waveguide antenna; Wave scattering; Microwave antenna; Numerical simulation; waveguide-fed slot antennas; Millimeter wave antennas; Electromagnetic (EM) scattering
• ISSN: 1531-1309; 1558-1764
• DOI: 10.1109/LMWC.2005.858965

An effective numerical technique employing the precorrected-fast Fourier transform (P-FFT) technique based on the method-of-moments (MoM) is presented to study the scattering from wide-slot antennas fed by waveguides with arbitrary terminations. As the Rao-Wilton-Glisson (RWG) functions are used as the basis and testing functions, the magnetic currents with arbitrary slot directions are considered. In addition, the P-FFT technique is employed to accelerate the MoM procedure for a large slot array. The numerical results are obtained and compared with both the traditional MoM results obtained using the entire-domain basis functions and the experiments results, to demonstrate better effectiveness and accuracy of this technique for millimeter wave scattering from arbitrary wide-slot antennas.