IP Library Granted Patent US 7,599,418
Granted Patent B2
US 7,599,418 · App. 11/355,569 · Granted Oct 6, 2009

Method and apparatus for a frequency hopper

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Quick Facts
Patent No.
US 7,599,418
App. No.
11/355,569
Granted
Oct 6, 2009
Kind
B2
Abstract

A method and system for generating a frequency hopping electromagnetic signal based on a baseband data signal includes a frequency hopping pre-compensator. The frequency hopping pre-compensator determines a frequency hopping pre-compensation signal based on a desired frequency hopping sequence. The frequency hopping pre-compensation signal is combined with the baseband data signal to generate a pre-compensated baseband signal. An RF modulator modulates an RF carrier in accordance with the pre-compensated baseband signal to generate a modulated, frequency hopping RF carrier signal. An amplifier may then amplify the RF carrier signal as desired.

Claims (73)

1. A method of generating a frequency hopping electromagnetic signal based on a baseband data signal and a desired frequency hopping sequence, comprising:

determining, by a processor, the desired frequency hopping sequence;

determining, by a frequency hopping pre-compensator in communication with the processor, a frequency hopping pre-compensation signal component based on the desired frequency hopping sequence;

combining, by the frequency hopping pre-compensator, the frequency hopping pre-compensation signal component with the baseband data signal to generate a pre-compensated baseband signal;

converting, by a polar converter in communication with the frequency hopping pre-compensator, the pre-compensated baseband signal to a polar signal; and

modulating, by an RF modulator in communication with the polar converter, an RF carrier in accordance with the polar pre-compensated baseband signal.

2. The method of claim 1 , further comprising:

amplifying the modulated RF carrier to generate a modulated, frequency hopping electromagnetic output signal.

3. The method of claim 1 , wherein the RF carrier is modulated using a single phase-locked loop.

4. The method of claim 1 ,

wherein the polar signal includes a baseband amplitude component and a pre-compensated baseband phase component, the method further comprising:

providing the baseband amplitude component to an amplitude modulator; and

providing the pre-compensated baseband phase component to a phase modulator.

5. The method of claim 1 ,

wherein the polar signal includes a baseband amplitude component and a pre-compensated baseband frequency component, the method further comprising:

providing the baseband amplitude component to an amplitude modulator; and

providing the pre-compensated baseband frequency component to a frequency modulator.

6. The method of claim 1 , further comprising:

wherein the polar signal includes a baseband data signal amplitude component and a baseband data signal phase component;

wherein generating the frequency hopping pre-compensation signal comprises generating a frequency hopping pre-compensation phase signal;

wherein of combining the frequency hopping pro-compensation signal with the baseband data signal comprises combining the frequency hopping pre-compensation phase signal with the baseband data signal phase component to generate a pre-compensated baseband phase signal; and

wherein the RF carrier is modulated using the pre-compensated baseband phase signal.

7. The method of claim 1 , further comprising:

wherein the polar signal includes a baseband amplitude data signal component and a pre-compensated baseband data signal frequency component;

wherein generating the frequency hopping pre-compensation signal comprises generating a frequency hopping pre-compensation frequency signal;

wherein combining the frequency hopping pre-compensation signal with the baseband data signal comprises combining the frequency hopping pre-compensation frequency signal with the pre-compensated baseband data signal frequency component to generate a pre-compensated baseband frequency signal; and

wherein the RF carrier is modulated using the pre-compensated baseband frequency signal.

8. A system for generating a frequency hopping electromagnetic signal based on a desired frequency hopping sequence, comprising:

a frequency hopping pre-compensator configured to generate a pre-compensated baseband data signal based on a desired frequency hopping sequence;

a polar converter in communication with the frequency-hopping pre-compensator and configured to convert the pre-compensated baseband data signal to a polar signal; and

an RF modulator in communication with the frequency hopping pre-compensator and configured to modulate an RF carrier wave in accordance with the polar, pre-compensated baseband data signal.

9. The system of claim 8 , further comprising:

an amplifier in communication with the RF modulator and configured to amplify the modulated RF carrier to generate a modulated, frequency hopping electromagnetic output signal.

10. The system of claim 8 , wherein the RF modulator includes a single phase-locked loop.

11. The system of claim 8 , further comprising:

wherein the polar signal includes a baseband amplitude data signal component and a pre-compensated baseband data signal phase component;

wherein the RF modulator is further configured to modulate the RF carrier wave in accordance with the pre-compensated baseband data signal phase component.

12. The system of claim 8 , further comprising:

wherein the polar signal includes a baseband amplitude data signal component and a pre-compensated baseband data signal frequency component;

wherein the RF modulator is further configured to modulate the RF carrier wave in accordance with the pre-compensated baseband data signal frequency component.

13. The system of claim 8 , further comprising:

wherein the polar signal includes a baseband amplitude data signal component and a baseband data signal phase component;

wherein the frequency hopping pre-compensator is configured to receive the baseband data signal phase component from the polar converter.

14. The system of claim 8 , further comprising:

wherein the polar signal includes a baseband amplitude data signal component and a baseband data signal frequency component;

wherein the frequency hopping pre-compensator is configured to receive the baseband data signal frequency component from the polar converter.

15. A system for generating a frequency hopping electromagnetic signal based on a desired frequency hopping sequence, comprising:

means for determining a desired frequency hopping sequence;

means for generating a frequency hopping pre-compensation signal based on the desired frequency hopping sequence;

means for combining the frequency hopping pre-compensation signal with a baseband data signal to generate a pre-compensated baseband signal;

means for converting the pre-compensated baseband signal to a polar signal; and

means for modulating an RF carrier in accordance with the polar, pre-compensated baseband signal.

16. The system of claim 15 , further comprising:

an amplitude modulator;

a phase modulator; and

wherein the polar signal includes a baseband amplitude component that is received by the amplitude modulator and a pre-compensated baseband phase component that is received by the phase modulator.

17. The system of claim 15 , further comprising:

an amplitude modulator;

a frequency modulator; and

wherein the polar signal includes a baseband amplitude component that is received by the amplitude modulator and a pre-compensated baseband frequency component that is received by the frequency modulator.

18. The system of claim 15 , further comprising:

wherein the polar signal includes a baseband amplitude component and a baseband phase component;

wherein the means for generating the frequency hopping pre-compensation signal includes means for generating a frequency hopping pre-compensation phase signal;

wherein the means for combining the frequency hopping pre-compensation signal with the baseband data signal includes means for combining the frequency hopping pre-compensation phase signal with the baseband phase component to generate a pre-compensated baseband phase signal; and

wherein the means for modulating the RF carrier includes means for modulating the RF carrier in accordance with the pre-compensated baseband phase signal.

19. The system of claim 15 , further comprising:

wherein the polar signal includes a pre-compensated baseband amplitude component and a pre-compensated baseband frequency component;

wherein the means for generating the frequency hopping pre-compensation signal includes means for generating a frequency hopping pre-compensation frequency signal;

wherein the means for combining the frequency hopping pre-compensation signal with the baseband data signal includes means for combining the frequency hopping pre-compensation frequency signal with the pre-compensated baseband frequency component to generate a pre-compensated baseband frequency signal; and

wherein the means for modulating the RF carrier includes means for modulating the RF carrier in accordance with the pre-compensated baseband frequency signal.

20. The system of claim 15 , wherein means for modulating the RF carrier includes a single phase-locked loop.

21. The system of claim 15 , further comprising:

means for receiving and amplifying the modulated RF carrier to generate a modulated, frequency hopping electromagnetic output signal.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 5, 2009
From: TYCO ELECTRONICS GROUP S.A.; TYCO ELECTRONICS CORPORATION; THE WHITAKER CORPORATION; M/A-COM, INC.; RAYCHEM INTERNATIONAL; M/A-COM PRIVATE RADIO SYSTEMS CANADA CORP.
To: PINE VALLEY INVESTMENTS, INC.
Reel/Frame 023065/0269 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 16, 2006
From: AHMED, WALID KHAIRY MOHAMED
To: M/A-COM, INC.
Reel/Frame 017574/0961 →