公开(公告)号：US11469790B2

公开(公告)日：2022-10-11

申请号：US16917432

申请日：2020-06-30

Applicant: KBR Wyle Services, LLC

Inventor： Gregory William Gerten ,  Gary Louis Green ,  Rachel Eunice Reed ,  Jared T. Emerson ,  Sean Joseph Stasiak ,  Steven John Billman

IPC: H04B1/16 ,  H04B1/403 ,  H03D7/16 ,  H04B1/18 ,  H04B1/00 ,  H04B1/28 ,  G06F16/901 ,  H04B1/04 ,  H04B17/318 ,  G01S19/07 ,  G01S19/24 ,  G01S19/31 ,  G01S19/34 ,  G01S19/37

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.

公开(公告)号：US11496177B2

公开(公告)日：2022-11-08

申请号：US16917445

申请日：2020-06-30

Applicant: KBR Wyle Services, LLC

Inventor： Gregory William Gerten ,  Gary Louis Green ,  Rachel Eunice Reed ,  Jared T. Emerson ,  Sean Joseph Stasiak ,  Steven John Billman

IPC: H04B1/403 ,  H04B1/18 ,  H04B1/00 ,  H04B1/28 ,  G06F16/901 ,  H04B1/16 ,  H04B1/04 ,  H04B17/318 ,  G01S19/07 ,  G01S19/34 ,  G01S19/37 ,  H03D7/16 ,  G01S19/24 ,  G01S19/31

Abstract: A method and transmission system for amplifying and providing navigation signals. The system comprises a splitter circuit configured to receive a plurality of radio frequency (RF) signals oscillating at at least two different frequencies f1 and f2. The splitter circuit is further configured to split and forward the RF signals having the f1 frequency to a first bandpass filter and the RF signals having the f2 frequency to a second bandpass filter. The system further comprises a first tunable amplifier configured to receive the RF signals from the first bandpass filter. The system further comprises a second tunable amplifier configured to receive the RF signals from the second bandpass filter at substantially the same time as the first tunable amplifier's receipt of the RF signals from the first bandpass filter. The first tunable amplifier is further configured to amplify its RF signals across a first band centered around the frequency f1. The second tunable amplifier is further configured to amplify its RF signals across a second band centered around the frequency f2. The amplified RF signals are fed substantially concurrently into a mixer circuit for transmission via an RF antenna to a navigation receiver.