The vector modulator assembly consists of three dynamic, continuously variable vector modulators, one static modulator, four directional couplers, a four-channel BF summing network and a single-pole, three-throw absorptive switch multiplexer.
Each modulator output is fed into an output summing network comprising a four-way, in-phase power combiner.
The mixer with an output frequency range of 10 to 100 Hz was created using a standard I/Q mixer and a 90|degrees~ active phase shifting and summing network
. The output of each of the eight receivers is sampled and converted from analog to digital using a 10 bit A/D converter.