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An Optically controlled beam forming network has been developed, which has capacity of steering 2 beams and exciting 64 antenna elements. Using it, beam steering and beam width control is possible in parallel.
We proposed an optically controlled phased array antenna using a spatial light modulator for an adaptive satellite communications system. We have developed a prototype of an Optical Beam Forming Network, which enables control of 2 beams individually, and demonstrated at Ka band. We confirmed a good agreement between theoretical antenna patterns and calculated antenna patterns, which are simulated...
We propose an optically controlled multiple-beam phased array antenna employing spatial and wavelength multiplexing. We have developed the prototype of the optical beam-former, which enables control of 10 beams individually, and demonstrated at 18 GHz.
Optically controlled beam forming techniques are effective for phased-array antenna control. We have developed the Fourier transform optical beamformer (FT-OBF). In the FT-OBF, the antenna radiation pattern inputted into an amplitude only spatial light modulator is optically Fourier transformed to a specific phase-front light beam equivalent to an antenna excitation distribution. We developed the...
This paper presents a spatial light modulator-based optical beamformer with 100 (10times10) elements, and its experiments in Ku band, such as the amplitude and the phase distribution, and the beam steering control. Moreover, its two-dimensional beam steering experiment is also demonstrated. Measurements agree well with the corresponding calculations.
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