HIGH POWER PULSE GENERATOR

• US 20110235742A1
• Filed: 03/25/2011
• Published: 09/29/2011
• Est. Priority Date: 03/26/2010
• Status: Active Grant

• Current Assignee: BAE Systems Information and Electronic Systems Integration Incorporated (BAE Systems Plc)
• Original Assignee: BAE Systems Information and Electronic Systems Integration Incorporated (BAE Systems Plc)
• Inventors: KOZYREV, ALEXANDER, LONDON, SIMON Y.
• Granted Patent: US 8,744,004 B2
• Time in Patent Office: Days
• US Class Current: 375/295
• CPC Class Codes: H03K 5/12 by steepening leading or trailing edges
• CPC Class Codes: H04K 2203/34 involving multiple cooperating jammers
• CPC Class Codes: H04K 3/42 characterized by the control of the jamming frequency or wavelength
• CPC Class Codes: H04K 3/62 by exposing communication, processing or storing systems to electromagnetic wave radiation, e.g. causing disturbance, disruption or damage of electronic circuits, or causing external injection of faults in the information

Abstract

A systems, pulse generators, apparatus and methods for generating a high power signal are presented. A pulse generator includes a generator and a modulator unit. The generator generates a bipolar signal. The modulator unit modulates the bipolar signal with oscillating signals to generate a modulated bipolar signal with oscillating portions. The frequency spectrum of the modulated bipolar signal contains very little to no direct current (DC) component.

Claims

1. A pulse generator of radio frequency or microwave signals comprising:

a generator to generate a bipolar signal; and

a modulator unit to modulate the bipolar signal a with oscillating signal to generate a modulated bipolar signal with oscillating portions, wherein the frequency spectrum of the modulated bipolar signal does not contain a direct current (DC) component.

2. The pulse generator of claim 1 wherein generator is configured to generate the bipolar signal that is a one cycle bipolar signal that stays at zero volts for a time period of T1, then goes from zero volts to a positive polarity for a time period of T2, then returns to zero volts for a timer period of T1, then goes to a negative polarity for a time period of T2, and then returns to zero volts for a time period of T1.

3. The pulse generator of claim 1 wherein the generator is configured to generate the bipolar signal that includes two or more of the one cycle bipolar signals generated sequentially without a time delay between the two or more of the one cycle bipolar signals.

4. The pulse generator of claim 1 wherein the modulator is configured to generate a modulated bipolar signal that has a frequency spectrum with a primary frequency band and a second frequency band above a threshold, with other frequencies below the threshold.

5. The pulse generator of claim 1 wherein the modulator unit further comprises:

a non-linear transmission line (NLTL) to modulate the bipolar signal with oscillating signals to generate the modulated bipolar signal.

6. The pulse generator of claim 1 further comprising:

an antenna to transmit the modulated bipolar signal.

7. The pulse generator of claim 1 further comprising:

a first antenna to operate at a first bandwidth;

a second antenna to operate at a second bandwidth;

a diplexer to transmit modulated bipolar signals that are to operate in the first bandwidth to the first antenna and to transmit modulated bipolar signals that are to operate in the second bandwidth to the second antenna.

8. The pulse generator of claim 1 further comprising:

a plurality of antennas to operate at a plurality bandwidths;

a multiplexer to transmit a modulated bipolar signal with a first bandwidth to one of the plurality of antenna configured to operate at the first bandwidth and to transmit another modulated bipolar signal with a second bandwidth to one of the plurality of antenna configured to operate at the second bandwidth.

9. A method of generating high power pulse comprising:

generating a bipolar signal;

modulating the bipolar signal with an oscillating signal to produce a modulated signal that does not have a DC component; and

transmitting the modulated signal out of an antenna.

10. The method of claim 9 wherein the modulating further comprises:

routing the bipolar signal to a first NLTL, wherein the first NLTL produces the modulated signal that is a first modulated signal;

routing the bipolar signal to a second NLTL to produce a second modulated signal; and

transmitting the first modulated signal and the second modulated signal from two different antennas that form at least part of an antenna array.

11. The method of claim 9 wherein the modulating further comprises:

passing the bipolar signal through a NLTL to generate the modulated bipolar signal.

12. The method of claim 9 wherein the generating further comprises:

generating the bipolar signal that is a one cycle bipolar signal that stays at zero volts for a time period of T1, then goes from zero volts to a positive amplitude for a time period of T2, then returns to zero volts for a timer period of T1, then goes to a negative amplitude for a time period of T2, and then returns to zero volts for a time period of T1.

13. The method of claim 11 wherein generating further comprises:

generating the bipolar signal so that the bipolar signal includes two or more of the one cycle bipolar signals generated sequentially.

14. The method of claim 9 wherein the generating further comprises:

generating the bipolar signal that is a one cycle bipolar signal that goes to generally a positive voltage of V for a time period of T and then goes to a generally negative voltage of V for a time period of T.

15. The method of claim 14 wherein generating further comprises:

generating the bipolar signal so that the bipolar signal includes two or more of the one cycle bipolar signals generated sequentially without a time delay between the two or more of the one cycle bipolar signals.

16. A high power pulse system comprising:

a generator to generate a bipolar signal;

a plurality of NLTLs to modulate the bipolar signal into a plurality of modulated signals with oscillating signals, wherein the plurality of modulated signals have no DC signal components; and

a plurality antennas forming an antenna array, wherein the plurality of antennas transmit the plurality of modulated signals.

17. The high power pulse system of claim 16 further comprising:

series to parallel interconnect to route the bipolar signal to the plurality of NLTLs.

18. The high power pulse system of claim 16 wherein generator is configured to generate the bipolar signal that stays at zero volts for a time period of T1, then goes from zero volts to a positive voltage amplitude for a time period of T2, then returns to zero volts for a timer period of T1, then goes to a negative voltage amplitude for a time period of T2, and then returns to zero volts for a time period of T1.

19. The high power pulse system of claim 16 wherein the generator is configured to be activated by at least one of the group of:

spark gaps and solid state switches.

20. The high power pulse system of claim 16 where the plurality of NLTLs are comprised, at least in part, of coaxial arrangement.