Agile navigation transmitter system
AssigneeKBR Wyle Services, LLC
InventorsGregory William Gerten, Gary Louis Green, Rachel Eunice Reed, Jared T. Emerson, Sean Joseph Stasiak, Steven John Billman
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Abstract
A direct digital synthesis transmitter that uses a programmable digital circuit to generate a digital signal representing at least one radio frequency signal, the generated signal is filtered, amplified by an amplifier, and provided to a transmission antenna without upconversion. The transmitter generating the digital signal at a desired output frequency range such that a frequency upconverter is not needed to produce signals in the desired radio frequency range.
Claims20
A transmission system for providing navigation signals, the system comprising:
- a digital processing circuit configured to generate digital navigation signals based on signal characteristics specifying at least one of a carrier frequency, modulation type, waveform, power, data structure, and timing information;
- and
- a radio frequency (RF) amplifier operationally connected to the digital processing circuit and configured to amplify RF signals for transmission to at least one navigation receiver via at least one RF antenna,
- wherein the RF signals are derived from the digital navigation signals and maintained with substantially the same carrier frequency as that of the digital navigation signals without an up-conversion to a higher frequency prior to transmission via the at least one RF antenna.
A method of providing navigation signals, the method comprising:
- generating by a hardware processing circuit digital navigation signals pursuant to signal characteristics specifying at least one of a carrier frequency, modulation type, data structure, and timing information;
- deriving radio frequency (RF) signals from the digital navigation signals while maintaining substantially the same carrier frequency for the RF signals as that of the digital navigation signals and without an up-conversion to a higher frequency;
- and
- amplifying by a RF amplifier the derived RF signals for transmission to at least one navigation receiver via at least one RF antenna at a transmission frequency.
Dependencies are inferred from the claim text.