Fast Antenna Synthesis by an Iterative FFT Procedure

A Review of Synthesis Techniques for Phased Antenna Arrays in Wireless Communications and Remote Sensing

“…e similarities between the IFT method and those used for the phase-less synthesis of reflector antennas as well as alternation/successive projection methods have been reported in Ref. [24].…”

“…An illustration of the application of the IFT method to design a synthetic aperture radar (SAR) antenna was given through transmit (Tx) and receive (Rx) pattern syntheses subject to masks concerning the main beam gain ripple, gain slope, and SLLs [24]. Taper syntheses in the short dimension of the SAR antenna were conducted for 48 elements with a separation of 0.7λ, with λ denoting the free-space wavelength.…”

“…Taper syntheses in the short dimension of the SAR antenna were conducted for 48 elements with a separation of 0.7λ, with λ denoting the free-space wavelength. e Tx and Rx patterns were subsequently synthesized with different degrees of freedom (phases for the Tx pattern, amplitudes, and phases with five-bit control for the Rx pattern) to finally generate a two-way pattern of the prescribed characteristics [24].…”

“…e four essential steps of the IFT method were outlined in Ref. [24], unfortunately without a proper description of the implementation details, in particular, those related to pattern adaptation. e IFT method was further developed to solve synthesis problems of large phased planar arrays [25].…”

“…e IFT method is also applicable to triangular array lattices upon affine transformation mapping the original grid onto a suitable Cartesian one [26,36]. e effectiveness and robustness of the IFT method, along with its ability to synthesize, at very modest computational costs, ultra-low sidelobe sum, and difference patterns for array apertures of [22][23][24] and IFT method [25][26][27][28][29][30][31][32][33][34][35] as applied to planar phased antenna array synthesis.…”