Patent US2985564A successfully refreshed from Google Patents.
Patent US5483549A successfully refreshed from Google Patents.
US5483549A
Expired / Lapsed
US
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Receiver having for charge-coupled-device based receiver signal processing
Assignee: Exelis Inc
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Filing: 1994-03-04
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Granted: 1996-01-09
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Expires: 2014-03-04
Abstract
Abstract This invention relates to a novel receiver architecture, the Charge-Coupled-Device Integrated Receiver (IR), which simplifies electronic circuitry requirements and reduce baseband processing rates through efficient signal processing. The focus of this receiver's design is its use of Charge-Coupled-Device (CCD) technology. By using CCD's, in conjunction with other key technologies, to implement the signal processing techniques disclosed herein, it is possible to provide a receiver that is suitable for a wide range of applications (e.g., communications, sonar, radar, etc.). Information is presented which outlines the fundamental receiver architecture that is appropriate for a wide range of commercial services (e.g., AMPS, NAMPS, Digital Cellular, GSM, PCS, ISM, CT1, CT2, etc.) Furthermore, tile versatility of this architecture makes it suited for uses ranging from simple AM/FM receivers to complex high-order modulation TDMA/CDMA receivers.
Inventors
- 👤 Aaron Weinberg
- 👤 Kenneth D. Cunningham
- 👤 Daniel Urban
- 👤 Matthew S. Simmons
- 👤 Thomas Land
- 👤 Martin W. Tucker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:51
CPC Classifications
H; H04; H04L; H04L27/00; H04L27/18; H04L27/20; G; G01; G01S; G01S7/00; G01S7/02; G01S7/28; G01S7/285; F; F02; F02B; F02B75/00; F02B75/02; F02B2075/022; F02B2075/027
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
122 words
A receiver for receiving and processing communication, sonar, and radar signals, comprising: means for receiving said signals and producing an analog electrical signal corresponding thereto, an integrated circuit-chip having: 1) a CCD portion connected to receive said analog electrical signal and efficiently reduces and replace selected RF components, selected from mixers, filters, and correlators, and efficiently process wide bandwidth signals and selected ones of the following functions: a. demodulate b. filter, c. store samples, d. decimate, e. despread, f. frequency translation, g. tune, h. amplify/attenuate, and 2) an analog-to-digital (A/D) converter, portion, and a digital signal processor connected to said A/D converter that integrates all synchronization functions in a single chip with significantly reduced power consumption due to the CCD signal processing.
Claim 2
Dependent Claim
122 words
A receiver for receiving and processing communication, sonar, and radar signals, comprising: means for receiving said signals and producing an analog electrical signal corresponding thereto, an integrated circuit-chip having: 1) a CCD portion connected to receive said analog electrical signal and efficiently reduces and replace selected RF components, selected from mixers, filters, and correlators, and efficiently process wide bandwidth signals and selected ones of the following functions: a. demodulate b. filter, c. store samples, d. decimate, e. despread, f. frequency translation, g. tune, h. amplify/attenuate, and 2) an analog-to-digital (A/D) converter, portion, and a digital signal processor connected to said A/D converter that integrates all synchronization functions in a single chip with significantly reduced power consumption due to the CCD signal processing.
Claim 3
Dependent Claim
107 words
A receiver for receiving and processing communication, sonar, and radar signals, comprising: means for receiving said signals and producing an analog electrical signal corresponding thereto, a integrated circuit-chip having: 1) a CCD portion connected to receive said analog electrical signals and efficiently reduces and replace selected RF components selected from mixers, filters, and correlators currently employed in conventional receivers, and efficiently process wide bandwidth signals, and perform at least two of the following functions: a. demodulate, b. filter, c. store samples, d. decimate, e. despread, f. frequency translation, g. tune, h. amplify/attenuate, and 2) an analog-to-digital (A/D) converter, and a utilization device connected to said A/D converter.
Claim 4
Dependent Claim
107 words
A receiver for receiving and processing communication, sonar, and radar signals, comprising: means for receiving said signals and producing an analog electrical signal corresponding thereto, a integrated circuit-chip having: 1) a CCD portion connected to receive said analog electrical signals and efficiently reduces and replace selected RF components selected from mixers, filters, and correlators currently employed in conventional receivers, and efficiently process wide bandwidth signals, and perform at least two of the following functions: a. demodulate, b. filter, c. store samples, d. decimate, e. despread, f. frequency translation, g. tune, h. amplify/attenuate, and 2) an analog-to-digital (A/D) converter, and a utilization device connected to said A/D converter.
Claim 5
Dependent Claim
31 words
The receiver defined in claim 2 including a digital signal processor that integrates all synchronization functions in a single chip with significantly reduced power consumption due to the CCD signal processing.
Claim 6
Dependent Claim
85 words
A receiver for receiving and processing communication, sonar, and radar signals, comprising: means for receiving said signals and producing an analog electrical signal corresponding thereto, a single integrated circuit-chip having: 1) a CCD portion connected to receive said analog electrical signals and constructed to perform at least two of the following functions: a. demodulate, b. filter, c. store samples, d. decimate, e. despread, f. frequency translation, g. tune, h. amplify/attenuate, 2) an analog-to-digital (A/D) converter portion, and a utilization device connected to said A/D converter.
Claim 7
Dependent Claim
85 words
A receiver for receiving and processing communication, sonar, and radar signals, comprising: means for receiving said signals and producing an analog electrical signal corresponding thereto, a single integrated circuit-chip having: 1) a CCD portion connected to receive said analog electrical signals and constructed to perform at least two of the following functions: a. demodulate, b. filter, c. store samples, d. decimate, e. despread, f. frequency translation, g. tune, h. amplify/attenuate, 2) an analog-to-digital (A/D) converter portion, and a utilization device connected to said A/D converter.
Claim 8
Dependent Claim
31 words
The receiver defined in claim 4 wherein said CCD portion includes a CCD matched filter to reduce or eliminate RF/IF circuitry, decimate and provide sample-and-hold, and filtering to said electrical signals.
Claim 9
Dependent Claim
36 words
The receiver defined in claim 4 wherein said CCD portion is constructed to perform RF to baseband conversion by sampling at a rate commensurate with the nyquist bandwidth but sub-sampling relative to the RF carrier frequency.
Claim 10
Dependent Claim
24 words
The receiver defined in claim 4 wherein said CCD portion is constructed to use a common sample set to achieve signal acquisition and tracking.
Claim 11
Dependent Claim
36 words
The receiver defined in claim 4 including a CCD adjustable clock and tap weight update means in conjunction with IF sampling to: a) achieving PN code alignment, b) achieving carrier alignment, and c) achieving symbol synchronization.
Claim 12
Dependent Claim
57 words
The receiver defined in claim 3 wherein said utilization device includes a digital signal processor and said CCD portion includes a matched filter portion and means for IF sampling with the matched filter and programming said digital signal processor to provide an output that can be used for detecting signals of both digital and analog modulation types.
Claim 13
Dependent Claim
93 words
The receiver defined in claim 9, constructed for use in a search and rescue application, said CCD portion being constructed to act as a spread spectrum receiver for passing digital messages via satellite during a search operation and then be reconfigured to handle line of sight FM voice communications during the rescue phase, and signaling structures through the course of the search and rescue mission constructed to be very diverse so that much of the same circuitry could be used in all instances so as to realize an extremely efficient and capable design.
Claim 14
Dependent Claim
33 words
The receiver defined in claim 4 wherein said CCD portion is adapted for PN tracking by over-sampling relative to the chip rate and updating the tracking loop in fractions of a chip duration.
Claim 15
Dependent Claim
41 words
A radio transmitter comprised of a single chip having a CCD portion constructed to filter, modulate, tune, spread, amplify and attenuate a signal and generate a waveform for transmission, and a power amplifier and antennae for receiving said waveform and transmission.
Claim 16
Dependent Claim
41 words
A radio transmitter comprised of a single chip having a CCD portion constructed to filter, modulate, tune, spread, amplify and attenuate a signal and generate a waveform for transmission, and a power amplifier and antennae for receiving said waveform and transmission.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-01-08 | 1999-07-10 | 2000-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-01-08 | 2003-07-10 | 2004-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-01-08 | 2007-07-10 | 2008-01-09 | $7700.00 | Window Closed / Lapsed |