Abstract: A secure data transmission system and method for targeting specific receiver locations. The secure data transmission system includes a time multiplexer, a time delay unit, a receiver tacker, and a plurality of transmitters. Additionally, the secure data transmission system may include a multiplexing sequence, a digital switch, a plurality of empty vectors, a range calculator, a delay estimator, and a plurality of stream time delays. The method for targeting specific receiver location includes receiving an input data stream, multiplexing the input data steam, receiving at least one instantaneous receiver locations, calculating a plurality of transmission ranges for each of the plurality of output data streams, calculating a plurality of time delays for each of the plurality of output data streams, delaying each of the plurality of output data streams according its calculated time delay, and transmitting each of the plurality of output data streams.

Abstract: A spot noise generator includes a mask component, a polyphase synthesizer, a first signal channel and second signal channel. The mask component has a narrowband noise input, a desired frequency channels word input, a first channel output and a second channel output. The narrowband noise input signal is a digital narrowband noise signal sampled approximately at the Nyquist rate. The desired frequency channels word selects one of the group consisting of the first channel output, the second channel output and a combination of the first channel output and the second channel output. The polyphase synthesizer synthesizes the first channel output signal, synthesizes the second channel output signal and outputs a desired noise signal based on the synthesized first channel output signal and the synthesized second channel output signal.

Abstract: A coaxial to waveguide transition includes a first rigid portion comprising an inverted hollow cone, a second rigid portion comprising a hollow tube, and a third rigid portion comprising a hollow cone. The first rigid portion has a first end and a second end, and tapers inward at a first angle from its first end towards its second end. The second rigid portion has a first end and a second end, with the first end being partially disposed within the second end of the first rigid portion. The third rigid portion has a first end and a second end, with the first end of the third rigid portion being partially disposed within the second end of the second rigid portion. The third rigid portion tapers outward at a second angle from its first end towards its second end, where the second angle is less than the first angle.

Abstract: A system is provided for combining multiple solid-state amplifiers using a radial combiner/divider. The system includes a coaxial input port, a coaxial output port, a first plurality of N waveguides radially disposed around a first transition, a second plurality of N waveguides radially disposed around a second transition, and a plurality of N amplifiers. A first end of each of the first plurality of waveguides is operatively connected to the coaxial input port via the first transition. A first end of each of the second plurality of waveguides is operatively connected to the coaxial output port via the second transition. A first port of each of the plurality of amplifiers is connected to a second end of one of the first plurality of waveguides and a second port of each of the plurality of amplifiers is connected to a second end of one of the second plurality of waveguides.

Abstract: A system is provided for combining multiple solid-state amplifiers using a radial combiner/divider. The system includes a coaxial input port, a coaxial output port, a first plurality of N waveguides radially disposed around a first transition, a second plurality of N waveguides radially disposed around a second transition, and a plurality of N amplifiers. A first end of each of the first plurality of waveguides is operatively connected to the coaxial input port via the first transition. A first end of each of the second plurality of waveguides is operatively connected to the coaxial output port via the second transition. A first port of each of the plurality of amplifiers is connected to a second end of one of the first plurality of waveguides and a second port of each of the plurality of amplifiers is connected to a second end of one of the second plurality of waveguides.

Abstract: A coaxial to waveguide transition includes a first rigid portion comprising an inverted hollow cone, a second rigid portion comprising a hollow tube, and a third rigid portion comprising a hollow cone. The first rigid portion has a first end and a second end, and tapers inward at a first angle from its first end towards its second end. The second rigid portion has a first end and a second end, with the first end being partially disposed within the second end of the first rigid portion. The third rigid portion has a first end and a second end, with the first end of the third rigid portion being partially disposed within the second end of the second rigid portion. The third rigid portion tapers outward at a second angle from its first end towards its second end, where the second angle is less than the first angle.

Abstract: A phased array receiver for use with a first received analog signal and a second received analog signal, the phased array receiver including: a first analog to digital converter to generate a first received digital signal; a second analog to digital converter to generate a second received digital signal; a first down-sampler to generate a first down-sampled digital signal; a second down-sampler to generate a second down-sampled digital signal; a first polyphase low pass filter to generate a first filtered down-sampled received digital signal; a second polyphase low pass filter to generate a second filtered down-sampled received digital signal; and a beamforming core to generate a beamformed signal, wherein the first received signal is related to the first filtered down-sampled received digital signal, and wherein the second received signal is related to the second filtered down-sampled received digital signal.