Programmable amplitude and phase controller
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United States of America Patent
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May 1, 2018
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app pub date -
May 30, 2017
filing date -
May 30, 2016
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Abstract
A continuously manually or remotely adjustable microwave attenuator and linear phase shifter uses a mobile signal coupler (wave-probe) and a slabline structure terminated with 50 Ohms. The coupled port of the wave-probe is connected with the output port of the unit using flexible RF cable. The wave-probe is attached to the vertical axis of a mobile carriage, which is moved at variable distance from the input port, corresponding to the expected transmission phase, whereas the depth, at which the wave-probe is inserted into the slabline, determines the coupling factor and thus the value of the attenuation. Amplifier and low pass filters compensate for coupling loss and equalize for frequency slope.
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