Passive frequency multiplexer
AssigneeRaytheon Company
InventorsAntony J. Kurth, Ethan Hettwer, Joel C. Roper
Life of this patent
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Abstract
A passive frequency multiplexer includes a beam forming network lens including a plurality of input terminals and a plurality of output terminals; a transmission line for transmitting a signal to the beam forming lens; and a plurality of couplers arranged in series along the transmission line, each of the plurality of couplers comprising an input terminal, an output terminal, and a coupled output terminal, each of the coupled output terminals of the plurality of couplers being coupled to a respective one of the input terminals of the beam forming network lens.
Claims20
A passive frequency multiplexer comprising:
- a beam forming network lens comprising a plurality of input terminals and a plurality of output terminals;
- a transmission line for transmitting a signal to the beam forming lens;
- and
- a plurality of couplers arranged in series along the transmission line, each of the plurality of couplers comprising an input terminal, an output terminal, and a coupled output terminal, each of the coupled output terminals of the plurality of couplers being coupled to a respective one of the input terminals of the beam forming network lens.
A passive frequency multiplexer comprising:
- a Rotman lens comprising a plurality of steer ports and a plurality of beam ports;
- a transmission line for transmitting a signal to the Rotman lens;
- and
- a plurality of couplers arranged in series along the transmission line, each of the plurality of couplers comprising an input terminal, an output terminal, and a coupled output terminal, each of the coupled output terminals being coupled to a respective one of the steer ports of the Rotman lens, a spacing between adjacent ones of the plurality of couplers being the same for each adjacent pair of the plurality of couplers.
A method of passively converting a time domain signal to a frequency domain signal in real time, the method comprising:
- receiving the time domain signal via a transmission line;
- coupling respective portions of the time domain signal to input terminals of a beam forming network lens via a plurality of couplers;
- reading an output signal at an output terminal of the beam forming network lens;
- applying a simple rectification to the output signal to acquire a rectified output signal;
- and
- converting the rectified output signal from analog to digital using an analog to digital converter to acquire the frequency domain signal.
Dependencies are inferred from the claim text.