Multifunction channelizer/DDC architecture for a digital receiver/exciter

• US 10,491,359 B2
• Filed: 09/06/2018
• Issued: 11/26/2019
• Est. Priority Date: 07/28/2017
• Status: Active Grant

• Current Assignee: Raytheon Company (Rtx Corporation)
• Original Assignee: Raytheon Company (Rtx Corporation)
• Inventors: Thompson, Daniel, Marr, Harry B., Robinson, Ian S
• Primary Examiner(s): Puente, Eva Y
• Application Number:
  US16/123,150
• Publication Number:
  US 20190036675A1
• Time in Patent Office: 446 Days
• Field of Search: 375346, 375295, 455221
• CPC Class Codes: G01S 3/043 Receivers
• CPC Class Codes: G01S 3/465 the waves arriving at the aerials being frequency modulated and the frequency difference of signals therefrom being measured
• CPC Class Codes: G01S 3/48 the waves arriving at the antennas being continuous or intermittent and the phase difference of signals derived therefrom being measured
• CPC Class Codes: G01S 3/808 using transducers spaced apart and measuring phase or time difference between signals therefrom, i.e. path-difference systems
• CPC Class Codes: H01Q 19/175 arrayed along the focal line of a cylindrical focusing surface
• CPC Class Codes: H01Q 25/008 lens fed multibeam arrays
• CPC Class Codes: H04B 1/0003 Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain digital baseband systems H04L25/00; digital modulation/demodulation H04L27/00; CDMA H04B1/707; TDMA H04B7/2643; image transmission H04N5/00
• CPC Class Codes: H04L 5/06 the signals being represented by different frequencies combined with time-division multiplexing H04L5/26
• CPC Class Codes: H04W 72/20 Control channels or signalling for resource management

Abstract

A digital receiver includes a digital synthesizer that generates a local oscillating (LO) signal at a selected frequency, and a signal mixer that receives an input signal and generates a mixed output signal in response to shifting a phase of the input signal based on the frequency of the LO signal. A multi-mode dynamic channelizer is selectively operable in a first mode and a second mode. The first mode generates a plurality of individual channels having a channel size defined by a bandwidth and a gain, and the second mode generates a parallelization of a selected channel. In response to operating in the second mode, the multi-mode dynamic channelizer adjusts at least one of the bandwidth and the gain of the selected channel based on the mixed output signal to change the channel size of the selected channel.

Claims

1. A digital receiver comprising:

a multi-mode channelizer bank including an array of independent multi-mode dynamic channelizers; and

a DDC/data packaging controller in signal communication with the multi-mode channelizer bank to receive at least one decimated baseband output signal,

wherein the DDC/data packaging controller performs bit packaging and data tagging on the at least one decimated baseband output signal and generates a data signal indicating the bit packaging and data tagging performed on the at least one decimated baseband output signal.

2. The digital receiver of claim 1, wherein the DDC/data packaging controller receives an individual decimated baseband output signal from each independent multi-mode dynamic channelize included in the multi-mode channelizer bank, and performs the bit packaging and data tagging on each individual decimated output signal to generate the data signal having additional decimation.

3. The digital receiver of claim 2, further comprising a plurality of multi-mode dynamic channelizers, each of the multi-mode dynamic channelizer including an adaptive filter configured to bandpass different frequency channels.

4. The digital receiver of claim 3, wherein each multi-mode dynamic channelizer included in the multi-mode dynamic channelizers is connected in a parallel with one another.

5. The digital receiver of claim 3, wherein each multi-mode dynamic channelizer included in the multi-mode dynamic channelizers is arranged in a daisy-chain connection with one another.

6. A method of performing multi-mode channelization, the method comprising:

outputting at least one decimated baseband output signal from a multi-mode channelizer bank including an array of independent multi-mode dynamic channelizers;

performing, via a DDC/data packaging controller, bit packaging and data tagging on the at least one decimated baseband output signal; and

outputting, via the DDC/data packaging controller, a data signal indicating the bit packaging and data tagging performed on the at least one decimated baseband output signal.

7. The method of claim 6, further comprising:

delivering individual decimated baseband output signals from each independent multi-mode dynamic channelize included in the multi-mode channelizer bank to the DDC/data packaging controller; and

performing, via the DDC/data packaging controller, the bit packaging and data tagging on each of the individual decimated output signals to generate the data signal having additional decimation.

8. The method of claim 7, further comprising bandpassing different frequency channels using a plurality of multi-mode dynamic channelizer.

9. The method of claim 8, wherein each multi-mode dynamic channelizer among the plurality of multi-mode dynamic channelizers is connected in a parallel with one another.

10. The method of claim 8, wherein each of the multi-mode dynamic channelizers included in the multi-mode dynamic channelizers is arranged in a daisy-chain connection with one another.