Digitally programmable multifunction radio system architecture

• US 6,072,994 A
• Filed: 08/31/1995
• Issued: 06/06/2000
• Est. Priority Date: 08/31/1995
• Status: Expired due to Term

• Current Assignee: BAE Systems Information and Electronic Systems Integration Incorporated (BAE Systems Plc), Northrop Grumman Systems Corporation (Northrop Grumman Corporation)
• Original Assignee: Northrop Grumman Corporation
• Inventors: Phillips, William C., Hilterbrick, Charles L., Schmidt, Kenneth M., Prill, Robert S., Pascale, Michael V., Minarik, Ronald W.
• Primary Examiner(s): Chin, Wellington
• Assistant Examiner(s): SOBUTKA, PHILIP
• Application Number:
  US08/522,050
• Time in Patent Office: 1,741 Days
• Field of Search: 455/7, 455/8, 455/11.1, 455/73, 455/77, 455/78, 455/82, 455/83, 455/84, 455/87, 455/91, 455/349, 455/103-5, 455/129, 455/132, 455/140, 455/269, 455/277.1, 455/272, 455/561, 455/56 2, 370/310, 364/464.06, 375/219, 375/222, 375/239, 375/261, 375/262, 375/259, 375/260, 375/269, 375/279, 375/295, 375/316, 375/340
• US Class Current: 455/84
• CPC Class Codes: G01S 13/767 Responders; Transponders teaching or practice apparatus for gun-aiming or gun-laying using reflecting targets or active targets F41G3/26
• CPC Class Codes: H04B 1/0003 Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain digital baseband systems H04L25/00; digital modulation/demodulation H04L27/00; CDMA H04B1/707; TDMA H04B7/2643; image transmission H04N5/00
• CPC Class Codes: H04B 1/001 Channel filtering, i.e. selecting a frequency channel within the SDR system multiplexing of multicarrier modulation signals being represented by different frequencies H04L5/06; multiplexing of multicarrier modulation signals H04L5/023
• CPC Class Codes: H04B 1/0039 using DSP [Digital Signal Processor] quadrature modulation and demodulation
• CPC Class Codes: H04B 1/0042 Digital filtering H04B1/0035 takes precedence; digital filters per se H03H17/00
• CPC Class Codes: H04B 1/0057 using diplexing or multiplexing filters for selecting the desired band
• CPC Class Codes: H04B 1/0092 using a wideband front end
• CPC Class Codes: H04B 1/26 for superheterodyne receivers multiple frequency-changing H03D7/16
• CPC Class Codes: H04B 1/40 Circuits
• CPC Class Codes: H04B 2001/0491 with frequency synthesizers, frequency converters or modulators

Abstract

A system that partitions or divides the functions of a radio into channels and divides the functions of each channel into two major functions: 1) antenna interface and power amplification; and 2) hardwired mixing, modulation/demodulation and signal processing and further partitions the mixing through signal processing functions into the functions of a) programmable analog mixing and b) programmable digital modulation/demodulation and signal processing. Control and user interface functions, if needed for a particular application can also be functionally partitioned. A typical received signal pathway will encounter an antenna module, an antenna interface and power amplification module, a receiver module partitioned into an analog submodule that performs mixing and down conversion to produce a common intermediate frequency signal and a digital submodule that further down converts the intermediate frequency signal, demodulates the signal and performs the other signal processing necessary to provide a useful information signal. A typical transmitter pathway includes a transmitter module partitioned into a digital submodule that performs signal processing and modulation and an analog submodule that performs upconversion and mixing, followed by a power amplification and interface module and an antenna module. Control and user interface modules can also be provided along with modules that perform additional processing and information security functions.

Claims

1. A digitally programmable multifunctional radio comprising:

a common transmit module, internally programmably reconfigurable and self-contained for channelized operation in each of a plurality of different radio modes, for digitally processing a bit stream into a digital signal, converting the digital signal into an analog signal and frequency translating the analog signal into an RF signal;

an antenna; and

an antenna interface module, coupled to said antenna and said common transmit module, for performing further processing of the RF signal and for providing the further processed RF signal to said antenna for transmission,

said common transmit module and said antenna interface module being optimally partitioned such that said common transmit module includes components that are programmably reconfigurable for operation in all of the plurality of different radio modes and said antenna interface module includes only components that are dedicated for operation only in a single or relatively few of the plurality of different radio modes.

2. The digitally programmable multifunctional radio of claim 1, further comprising a memory for storing configuration data for said common transmit module,

said common transmit module being internally programmably reconfigurable for channelized operation in each of the plurality of different radio modes in accordance with the stored configuration data.

3. The digitally programmable multifunctional radio of claim 1, wherein said common transmit module comprises a field programmable gate array that is internally programmably reconfigurable.

4. The digitally programmable multifunctional radio of claim 1, wherein said common transmit module includes an analog submodule and a digital submodule that are internally programmably reconfigurable.

5. The digitally programmable multifunctional radio of claim 4, wherein said digital submodule controls reconfiguration of said analog submodule.

6. The digitally programmable multifunctional radio of claim 1, further comprising a plurality of common transit modules, each internally programmably reconfigurable and self-contained for channelized operation in each of the plurality of different radio modes, for respectively digitally processing plural bit streams into plural digital signals, respectively converting the plural digital signals into plural analog signals and respectively frequency translating the plural analog signals into plural RF signals.

7. The digitally programmable multifunctional radio of claim 6, wherein said antenna interface module is coupled to said plurality of additional common transmit modules and respectively performs further processing on the plural RF signals and provides the further processed plural RF signals to said antenna for transmission.

8. The digitally programmable multifunctional radio of claim 7, wherein said antenna comprises plural antennas, coupled to said antenna interface module, for respectively transmitting the further processed RF signal and the further processed plural RF signals.

9. The digitally programmable multifunctional radio of claim 8, wherein said antenna interface module comprises a plurality of antenna interface modules, coupled to said plurality of common transmit modules, for further processing the plural RF signals and the RF signal and providing the further processed RF signal and the further processed plural RF signals to said plural antennas.

10. The digitally programmable multifunctional radio of claim 6, wherein said common transmit module and said plurality of common transmit modules operate on different channels in parallel.

11. The digitally programmable multifunctional radio of claim 6, wherein said common transmit module and said plurality of common transmit modules are identical and interchangeable as plug-in units.

12. The digitally programmable multifunctional radio of claim 6, further comprising a spare common transmit module connectable to said antenna interface module upon failure of any of said common transmit module and said plurality of common transmit modules.

13. The digitally programmable multifunctional radio of claim 6, wherein said antenna comprises plural antennas for respectively transmitting the further processed RF signal and the further processed plural RF signals,

said antenna interface module including component groups for respectively performing further processing on the RF signal and the plural RF signals to provide the further processed RF signal and the further processed plural RF signals.

14. The digitally programmable multifunctional radio of claim 6, wherein said common transmit module and said plural common transmit modules are internally programmably reconfigured for operation in respective different ones of the plurality of different radio modes.

15. A digitally programmable multifunctional radio comprising:

an antenna for receiving an RF signal;

an antenna interface module, coupled to said antenna, for performing preprocessing of the RF signal; and

a common receive module, coupled to said antenna interface module and internally programmably reconfigurable and self-contained for channelized operation in each of a plurality of different radio modes, for frequency translating the preprocessed RF signal into an analog signal, converting the analog signal into a digital signal and digitally processing the digital signal into a bit stream,

said common receive module and said antenna interface module being optimally partitioned such that said common receive module includes components that are programmably reconfigurable for operation in all of the plurality of different radio modes and said antenna interface module includes only components that are dedicated for operation only in a single or relatively few of the plurality of different radio modes.

16. The digitally programmable multifunctional radio of claim 15, further comprising a memory for storing configuration data for said common receive module,

said common receive module being internally programmably reconfigurable for channelized operation in each of the plurality of different radio modes in accordance with the stored configuration data.

17. The digitally programmable reconfigurable multi-functional radio of claim 15, wherein said common receive module comprises a field programmable gate array that is internally programmably reconfigurable.

18. The digitally programmable multifunctional radio of claim 15, wherein said common receive module includes an analog submodule and a digital submodule that are internally programmably reconfigurable.

19. The digitally programmable multifunctional radio of claim 18, wherein said digital submodule controls reconfiguration at said analog submodule.

20. The digitally programmable multifunctional radio of claim 15, wherein said antenna receives plural RF signals and said antenna interface module performs preprocessing of the plural RF signals.

21. The digitally programmable multifunctional radio of claim 20, further comprising a plurality of common receive modules, each internally programmably reconfigurable and self-contained for channelized operation in each of the plurality of different radio modes, for respectively frequency translating the preprocessed plural RF signals into plural analog signals, respectively converting the plural analog signals into plural digital signals and respectively digitally processing the plural digital signals into plural bit streams.

22. The digitally programmable multifunctional radio of claim 21, wherein said antenna comprises plural antennas for respectively receiving the RF signal and the plural RF signals.

23. The digitally programmable multifunctional radio of claim 22, wherein said antenna interface module comprises a plurality of antenna interface modules, coupled to said plural antennas, for preprocessing the RF signal and the plural RF signals and providing the preprocessed RF signal and the preprocessed plural RF signals respectively to said common receive module and said plural common receive modules.

24. The digitally programmable multifunctional radio of claim 21, wherein said common receive module and said plural common receive modules operate on different channels in parallel.

25. The digitally programmable multifunctional radio of claim 21, wherein said common receive module and said plural common receive modules are identical and interchangeable as plug-in units.

26. The digitally programmable multifunction radio of claim 21, further comprising a spare common receive module connectable to said antenna interface module upon failure of any of said common receive module and said plural common receive modules.

27. The digitally programmable multifunction radio of claim 21, wherein said common receive module and said plural common receive modules are internally programmably reconfigured for operation in respective different ones of the plurality of radio modes.

28. A digitally programmable multifunctional radio comprising:

a common transmit module, internally programmably reconfigurable and self-contained for channelized operation in each of a plurality of different radio modes, for digitally processing a first bit stream into a first digital signal, converting the first digital signal into a first analog signal and frequency translating the first analog signal into a first RF signal;

an antenna for receiving a second RF signal;

an antenna interface module, coupled to said antenna and said common transmit module, for performing further processing of the first RF signal, providing the further processed first RF signal to said antenna for transmission and performing preprocessing of the second RF signal; and

a common receive module, coupled to said antenna interface module and internally programmably reconfigurable and self-contained for channelized operation in each of the plurality of different radio modes, for frequency translating the preprocessed second RF signal into a second analog signal, converting the second analog signal into a second digital signal and digitally processing the second digital signal into a second bit stream,

said common transmit module, said common receive module and said antenna interface module being optimally partitioned such that said common transmit module and said common receive module include components that are programmably reconfigurable for operation in all of the plurality of different radio modes and said antenna interface module includes only components that are dedicated for operation only in a single or relatively few of the plurality of different radio modes.