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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...
A compact power amplifier unit for X-band solid-state Active Phased Array Antennas (APAAs) has been developed. Its major features are, (1) high power GaN (Gallium Nitride) HEMT is employed, (2)16 transmit MIC modules are arrayed in line on a thin flat printed wiring board (PWB), (3) output power is 30 W (pulse) at each transmit-output port of the unit, hence 480 W in total, and (4) other necessary...
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