Method and apparatus for receiving electromagnetic radiation within a frequency band
First Claim
1. A communication unit for receiving electromagnetic radiation within a frequency band, comprising:
- (a) input means for intercepting electromagnetic radiation within the frequency band and for converting the intercepted electromagnetic radiation into an electrical signal;
(b) digitizing means, operatively coupled to the input means, for digitizing a portion of the electrical signal into a plurality of digitized signals, each digitized signal representing the intercepted electromagnetic radiation within a portion of the frequency band; and
(c) digital combining means, operatively coupled to the digitizing means, for generating a composite digitized signal from at least two of the plurality of digitized signals.
4 Assignments
0 Petitions
Accused Products
Abstract
A method and apparatus are provided for receiving electromagnetic radiation within a frequency band. The receiving is accomplished by intercepting electromagnetic radiation within the frequency band and converting the intercepted electromagnetic radiation into an electrical signal. Subsequently, a portion of the electrical signal is digitized into digitized signals. Each digitized signal represents the intercepted electromagnetic radiation within a portion of the frequency band. Finally, a composite digitized signal is generated from at least two of the digitized signals. Alternatively, the receiving process may be enhanced by intercepting first electromagnetic radiation within a portion of the frequency band and by intercepting second electromagnetic radiation within another portion of the frequency band. Subsequently, the first and the second electromagnetic radiation is combined into a composite electromagnetic radiation waveform. The composite electromagnetic radiation waveform is converted into an electrical signal which may be processed into digitized signals which form a composite digitized signal.
53 Citations
59 Claims
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1. A communication unit for receiving electromagnetic radiation within a frequency band, comprising:
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(a) input means for intercepting electromagnetic radiation within the frequency band and for converting the intercepted electromagnetic radiation into an electrical signal; (b) digitizing means, operatively coupled to the input means, for digitizing a portion of the electrical signal into a plurality of digitized signals, each digitized signal representing the intercepted electromagnetic radiation within a portion of the frequency band; and (c) digital combining means, operatively coupled to the digitizing means, for generating a composite digitized signal from at least two of the plurality of digitized signals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A communication unit for receiving a frequency band, comprising:
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(a) input means for intercepting the frequency band; (b) a digitizer, operatively coupled to the input means, the digitizer comprising a plurality of frequency selection means for selecting portions of the intercepted frequency band, each frequency selection means comprising a filter that selects a particular portion of the intercepted frequency band, the digitizer further comprising a plurality of analog-to-digital conversion means for generating a plurality of digitized signals, each analog-to-digital conversion means being operatively coupled to one of the plurality of frequency selection means; (c) digital combining means, operatively coupled to the digitizing means, for generating a composite digitized signal from at least two of the plurality of digitized signals; and (d) a detecting means, operatively coupled to the combining means, for detecting an information signal within the composite digitized signal. - View Dependent Claims (30, 31, 32, 33)
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34. A communication unit for receiving a frequency band, comprising:
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(a) input means for intercepting the frequency band; (b) a digitizer, operatively coupled to the input means, the digitizer comprising a frequency selection means for selecting the portion of the intercepted frequency band, the frequency selection means comprising a filter that selects the portion of the intercepted frequency band, the digitizer further comprising an analog-to-digital conversion means, operatively coupled to the frequency selection means, for digitizing the portion of the intercepted frequency band into a digitized signal, the digitizer further comprising processing means, operatively coupled to the analog-to-digital conversion means, for subdividing the digitized signal into the plurality of digitized signals; (c) digital combining means, operatively coupled to the digitizing means, for generating a composite digitized signal from at least two of the plurality of digitized signals; and (d) a detecting means, operatively coupled to the combining means, for detecting an information signal within the composite digitized signal. - View Dependent Claims (35, 36, 37, 38)
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39. A communication unit for receiving a frequency band, comprising:
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(a) input means for intercepting the frequency band; (b) a digitizer, operatively coupled to the input means, the digitizer comprising; (i) a first frequency selection means for selecting a portion of the intercepted frequency band; (ii) a second frequency selection means for selecting another portion of the intercepted frequency band; (iii) electromagnetic radiation combining means, operatively coupled to the first and the second frequency selection means, for combining the portions of the frequency band intercepted by the first and second frequency selection means into a composite intercepted frequency band; (iv) an analog-to-digital conversion means, operatively coupled to the electromagnetic radiation combining means, for generating a digitized composite intercepted frequency band; and (v) processing means, operatively coupled to the analog-to-digital conversion means, for subdividing the digitized composite intercepted frequency band into the plurality of digitized signals; (c) digital combining means, operatively coupled to the digitizing means, for generating a composite digitized signal from at least two of the plurality of digitized signals; and (d) a detecting means, operatively coupled to the combining means, for detecting an information signal within the composite digitized signal. - View Dependent Claims (40, 41, 42, 43, 44)
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45. A communication unit for receiving electromagnetic radiation within a frequency band, comprising:
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(a) input means for intercepting first electromagnetic radiation within a portion of the frequency band and for intercepting second electromagnetic radiation within another portion of the frequency band; (b) electromagnetic radiation combining means, operatively coupled to the input means, for combining the first and the second electromagnetic radiation into a composite electromagnetic radiation waveform; (c) conversion means, operatively coupled to the electromagnetic radiation combining means, for converting the composite electromagnetic radiation waveform into an electrical signal; and (d) a digitizing means, operatively coupled to the combining means, for digitizing a portion of the electrical signal into a plurality of digitized signals, each digitized signal representing a portion of the composite electromagnetic radiation waveform. - View Dependent Claims (46, 47, 48, 49, 50, 51, 52)
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53. A method for receiving electromagnetic radiation within a frequency band, comprising the steps of:
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(a) intercepting electromagnetic radiation within the frequency band; (b) converting the intercepted electromagnetic radiation into an electrical signal; (b) digitizing a portion of the electrical signal into a plurality of digitized signals, each digitized signal representing the intercepted electromagnetic radiation within a portion of the frequency band; and (c) generating a composite digitized signal from at least two of the plurality of digitized signals, the composite digitized signal conforming with the expected frequency bandwidth for a signal coding and channelization standard selected from the group consisting of frequency division multiple access, time division multiple access, frequency hopping code division multiple access, direct sequence code division multiple access. - View Dependent Claims (54, 55, 56, 57, 58, 59)
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Specification