Apparatus, methods and articles of manufacture for wideband signal processing

• US 7,545,865 B2
• Filed: 12/03/2002
• Issued: 06/09/2009
• Est. Priority Date: 12/03/2002
• Status: Expired due to Fees

• Current Assignee: North South Holdings Incorporated (Spherix Incorporated)
• Original Assignee: M/A Com
• Inventors: Bengtson, David
• Primary Examiner(s): Fan; Chieh M
• Assistant Examiner(s): Joseph; Jaison
• Application Number:
  US10/308,593
• Publication Number:
  US 20040105502A1
• Time in Patent Office: 2,380 Days
• Field of Search: 375/256, 375/260, 375/261, 375/376, 375/373, 375/375, 375/294
• US Class Current: 375/256
• CPC Class Codes: H03C 3/0925 applying frequency modulation at the divider in the feedback loop
• CPC Class Codes: H03C 3/0933 using fractional frequency division in the feedback loop of the phase locked loop
• CPC Class Codes: H03C 3/0991 including calibration means or calibration methods

Abstract

An apparatus for electromagnetic processing comprises a modulator for generating one or more elements representative of an input signal; a divider controlled by the one or more elements and receiving an electromagnetic wave to generate a modified signal; a comparator for comparing the modified signal to a reference signal and for generating a processed signal based upon the comparison; and a channel number calculator for selecting a channel for the processed signal, wherein the input signal incorporated the channel selection.

Claims

1. A method of wideband processing of a phase component signal comprising:

preprocessing the phase component signal, the preprocessing comprising scaling to compensate for any gain in the phase component signal;

performing a channel calculation resulting in at least two channel calculation components;

combining a first of the channel calculation components with the preprocessed phase component signal to generate a combined signal;

processing the combined signal to generate one or more elements representative of said phase component signal;

dividing an electromagnetic carrier wave by a sum of said one or more elements and a second of the channel calculation components to generate a modified signal;

comparing said modified signal to a reference signal;

generating a processed signal based upon said comparison;

compensating for error detected in the modified signal; and

combining said processed signal with said electromagnetic carrier wave to produce a phase modulated signal.

2. The method of claim 1, wherein said channel calculation results in a number and wherein said first channel calculation component comprises any fractional part of said number and said second channel component comprises any integer part of said number and wherein the combination of the fractional part and the integer part is used to lock a phase locked loop to a desired frequency.

3. The method of claim 1, wherein said preprocessing step comprises equalization filtering to compensate for roll-off by increasing a gain for higher frequency components to produce a flattened frequency response and extend modulation bandwidth.

4. The method of claim 1, wherein said preprocessing step comprises modulation response filtering.

5. The method of claim 1, wherein said compensating step comprises deriving a reference electromagnetic wave from the phase component signal and adjusting said modified signal based on said reference electromagnetic wave.

6. An apparatus for wideband processing of a phase component signal comprising:

means for preprocessing the phase component signal, the preprocessing means comprising a scaling processor to compensate for any gain in the phase component signal;

means for performing a channel calculation resulting in at least two channel calculation components;

means for combining a first of the channel calculation components with the preprocessed phase component signal to generate a combined signal;

means for processing the combined signal to generate one or more elements representative of said phase component signal;

means for dividing an electromagnetic carrier wave by said one or more elements representative of said phase component signal;

means for dividing an electromagnetic carrier wave by a sum of said one or more elements and a second of the channel calculation components to generate a modified signal;

means for comparing the modified signal to a reference signal;

means for generating a processed signal based upon said comparison;

means for compensating for error detected in said modified signal; and

means for combining said processed signal with said electromagnetic carrier wave to produce a phase modulated signal.

7. The apparatus of claim 6, further comprising means for combining the second channel component with the one or more elements before the electromagnetic carrier wave is divided.

8. The apparatus of claim 7, wherein said channel calculation results in a number and wherein said first channel calculation component comprises any fractional part of said number and said second channel calculation component comprises any integer part of said number and wherein the combination of the fractional part and the integer part is used to lock a phase locked loop to a desired frequency.

9. The apparatus of claim 6, wherein said preprocessing means comprises one or more selected from the group consisting of a compensation filter to compensate for roll-off by increasing a gain for higher frequency components to produce a flattened frequency response and extend modulation bandwidth and a modulation response filter.

10. The apparatus of claim 6, wherein said compensating means comprises means for deriving a reference electromagnetic wave from the phase component signal and means for adjusting said modified signal based on said reference electromagnetic wave.

11. An apparatus for electromagnetic processing comprising:

a scaling processor to compensate for any gain in a phase component signal;

a channel number calculator for performing a channel calculation resulting in at least two channel calculation components;

means for combining a first of said channel calculation components with the phase component signal to generate a combined signal;

a modulator for processing the combined signal to generate one or more elements representative of said phase component signal;

a divider for dividing an electromagnetic carrier wave by a sum of said one or more elements and a second of the calculation components to generate a modified signal;

a comparator for comparing said modified signal to a reference signal and for generating a processed signal based upon said comparison;

means for compensating for error detected in said modified signal; and

means for combining said processed signal with said electromagnetic carrier wave to produce a phase modulated signal.

12. The apparatus of claim 11, further comprising means for combining the second channel calculation component with the one or more elements before the electromagnetic carrier wave is divided.

13. The apparatus of claim 11, wherein said channel number calculator is configured to perform a channel calculation that results in a number such that the first channel calculation component comprises any fractional part of said number and the second channel calculation component comprises any integer part of said number and wherein the combination of the fractional part and the integer part is used to lock a phase locked loop to a desired frequency.

14. The apparatus of claim 13, further comprising a compensation filter to compensate for roll-off by increasing the gain of higher frequency components to produce a flattened frequency response and extend modulation bandwidth and a modulation response filter.

15. The apparatus of claim 14, further comprising an adaptive phase realignment component to compensate for error detected in the modified signal.

16. The apparatus of claim 15, wherein said adaptive phase realignment component is in communication with said comparator and derives a reference electromagnetic wave from the phase component signal, wherein said modified signal is adjusted on detection of error based on said reference electromagnetic wave.