Advanced arbitrary waveform generator

• US 20070067123A1
• Filed: 09/19/2005
• Published: 03/22/2007
• Est. Priority Date: 09/19/2005
• Status: Abandoned Application

• Current Assignee: Agilent Technologies, Inc.
• Original Assignee: Agilent Technologies, Inc.
• Inventors: Jungerman, Roger
• Application Number:
  US11/231,223
• Publication Number:
  US 20070067123A1
• Time in Patent Office: Days
• US Class Current: 702/67
• CPC Class Codes: G06F 1/0321 Waveform generators, i.e. devices for generating periodical functions of time, e.g. direct digital synthesizers G06F1/0314, G06F1/035 take precedence
• CPC Class Codes: G06F 1/0328 in which the phase increment is adjustable, e.g. by using an adder-accumulator
• CPC Class Codes: G06F 1/0342 for generating simultaneously two or more related waveforms, e.g. with different phase angles only

Abstract

An advanced arbitrary waveform generator (“AAWG”) for producing an arbitrary waveform is disclosed. The AAWG may include a direct digital synthesis (“DDS”) module in signal communication with a sequence memory and a multiplication module in signal communication with both the DDS module and a waveform memory, where the multiplication module receives signal waveform data from the waveform memory and multiplies the received signal waveform data with a DDS output signal to produce the arbitrary waveform signal.

Claims

1. An advanced arbitrary waveform generator (“

AAWG”

) for producing an arbitrary waveform signal, the AAWG having a sequence memory, sequencer, and waveform memory, the AAWG comprising;

a direct digital synthesis (“

DDS”

) module in signal communication with the sequence memory, where the DDS module receives control data from the sequence memory and, in response, produces a DDS output signal; and

a multiplication module in signal communication with both the DDS module and waveform memory, where the multiplication module receives signal waveform data from the waveform memory and multiplies the received signal waveform data with the DDS output signal to produce the arbitrary waveform signal,

wherein the waveform memory produces the signal waveform data in response to receiving a signal waveform address from the sequencer.

2. The AAWG of claim 1, further including a gain module in signal communication with both the sequence memory and the multiplication module wherein the gain module produces an amplified arbitrary waveform signal.

3. The AAWG of claim 2, wherein the gain module includes a negative gain and the amplified arbitrary waveform signal is less in magnitude than the arbitrary waveform signal.

4. The AAWG of claim 2, wherein the multiplication module is a complex multiplication module.

5. The AAWG of claim 2, wherein the sequence memory and waveform memory are located within the same memory module.

6. The AAWG of claim 5, wherein the memory module is an integrated circuit chosen from a group consisting of a discrete static random access memory, dynamic random access memory, field programmable gate array, and block random access memory.

7. The AAWG of claim 1, wherein the multiplication module is a complex multiplication module.

8. The AAWG of claim 1, wherein the sequence memory and waveform memory are located within the same memory module.

9. The AAWG of claim 1, wherein the sequence memory is an integrated circuit chosen from a group consisting of a discrete static random access memory, dynamic random access memory, field programmable gate array, and block random access memory.

10. The AAWG of claim 1, wherein the waveform memory is an integrated circuit chosen from a group consisting of a discrete static random access memory, dynamic random access memory, field programmable gate array, and block random access memory.

11. The AAWG of claim 1, wherein the sequencer, the DDS module, and multiplication module are integrated into a single integrated circuit (“

IC”

).

12. The AAWG of claim 11, wherein the IC is chosen from the group consisting of a field programmable gate array, digital signal processor, and application specific integrated circuit.

13. The AAWG of claim 12, wherein the single IC also includes a gain module.

14. The AAWG of claim 1, wherein the sequence memory includes a memory space that includes pointers to addresses in the waveform memory.

15. The AAWG of claim 14, wherein the sequence memory further includes a scenario table that points to particular sets of packets in the sequence memory, wherein each scenario in the scenario table represents a different type of signal waveform.

16. A method for producing an arbitrary waveform signal utilizing an advanced arbitrary waveform generator (“

AAWG”

), the AWG having a sequence memory, sequencer, and waveform memory, the method comprising;

producing a direct digital synthesis (“

DDS”

) output signal from a control data signal; and

multiplying the DDS output signal with signal waveform data to produce the arbitrary waveform signal.

17. The method of claim 16, further including amplifying the arbitrary waveform signal to produce an amplified arbitrary waveform signal.

18. The method of claim 17, wherein amplifying includes amplifying with a negative gain and the amplified arbitrary waveform signal is less in magnitude than the arbitrary waveform signal.

19. The method of claim 17, wherein multiplying the DDS output signal with the waveform data includes complex multiplying the DDS output signal with the waveform data.

20. An advanced arbitrary waveform generator (“

AAWG”

) for producing an arbitrary waveform signal, the AAWG having a sequence memory, a sequencer, a waveform memory, and a signal-bearing medium, the signal-bearing medium comprising;

logic configured for producing a direct digital synthesis (“

DDS”

) output signal in response to control data from a sequence memory; and

logic configured for multiplying the DDS output signal with signal waveform data to produce the arbitrary waveform signal.