Claims
- 1. A method for operating a multiple-mode multiple-band transceiver, comprising:
providing a multiple-channel transmitter including a plurality of selectable transmit-channel components, the plurality of selectable transmit-channel components sharing at least one element coupled to an output of a transmit signal modulator, the plurality of selectable transmit channel components forming at least first and second transmit channels configured to generate radio-frequency signals using at least a first and a second multiple-access modulation technique, wherein the second transmit channel comprises a translation loop; and enabling at least one of the first and second transmit channels to transmit a communication signal using one of the first and second multiple-access modulation techniques.
- 2. The method of claim 1, wherein the at least one element coupled to an output of the transmit signal modulator comprises a variable gain amplifier.
- 3. The method of claim 1, wherein the first multiple-access modulation technique comprises code division multiple access.
- 4. The method of claim 1, wherein the second multiple-access modulation technique comprises global system for mobile communication.
- 5. The method of claim 1, further comprising:
providing a multiple channel receiver including a plurality of selectable receive channel components, the plurality of selectable receive channel components sharing at least one element coupled to an input of a demodulator, the plurality of selectable receive channel components forming at least first and second receive channels configured to receive radio-frequency signals using at least the first and second multiple-access modulation techniques; and enabling at least one of the first and second receive channels to receive a communication signal using one of the first and second multiple-access modulation techniques.
- 6. The method of claim 5, wherein the at least one element coupled to an output of a transmit signal modulator comprises a variable gain amplifier.
- 7. The method of claim 5, wherein the first multiple-access modulation technique comprises code division multiple access.
- 8. The method of claim 5, wherein the second multiple-access modulation technique comprises global system for mobile communication.
- 9. The method of claim 5, wherein the plurality of selectable receive channel components further share at least one element coupled to at least one image reject filter and at least one IF filter.
- 10. The method of claim 5, wherein the plurality of selectable receive channel components further share at least one element coupled to an antenna and at least one image reject filter.
- 11. The method of claim 10, wherein the at least one element is coupled to the antenna via a preselector filter.
- 12. The method of claim 10, wherein the at least one element is coupled to the antenna via a variable attenuator.
- 13. The method of claim 10, wherein the at least one element comprises a low noise amplifier.
- 14. The method of claim 10, wherein the at least one element comprises a mixer.
- 15. A multiple-mode multiple band transceiver, comprising:
a multiple-channel transmitter including a plurality of selectable transmit-channel components, the plurality of selectable transmit-channel components sharing at least one element coupled to a modulator, the plurality of selectable transmit channel components forming at least first and second transmit channels configured to generate radio-frequency signals using at least a first and a second multiple-access modulation technique, wherein the second transmit channel comprises a translation loop; and a first switch configured to enable at least one of the first and second transmit channels to transmit a communication signal using at least one of the first and the second multiple-access modulation techniques.
- 16. The transceiver of claim 15, wherein the at least one element coupled to a modulator is a variable gain amplifier.
- 17. The transceiver of claim 15, wherein the first multiple-access modulation technique comprises code division multiple access.
- 18. The transceiver of claim 15, wherein the second multiple-access modulation technique comprises global system for mobile communication.
- 19. The transceiver of claim 15, further comprising:
a multiple channel receiver including a plurality of selectable receive channel components, the plurality of selectable receive channel components sharing at least one element coupled to an input of a demodulator, the plurality of selectable receive channel components forming at least first and second receive channels configured to receive radio-frequency signals using at least the first and second multiple-access modulation techniques; and a second switch configured to enable at least one of the first and second receive channels to receive a communication signal using one of the first and second multiple access modulation techniques.
- 20. The transceiver of claim 19, wherein the at least one element coupled to an output of a demodulator comprises a variable gain amplifier.
- 21. The transceiver of claim 20, wherein the first and second receive channels further share at least one element coupled to an antenna and an image reject filter.
- 22. The transceiver of claim 21, wherein the at least one element is coupled to the antenna via a preselector filter.
- 23. The transceiver of claim 21, wherein the at least one element is coupled to the antenna via a variable attenuator.
- 24. The transceiver of claim 21, wherein the at least one element comprises a low noise amplifier.
- 25. The transceiver of claim 19, wherein the first and second receive channels further share at least one element coupled to an image reject filter and an IF filter.
- 26. The transceiver of claim 25, wherein the at least one element comprises a mixer.
- 27. A method for operating a multiple-mode multiple-band transceiver, comprising:
providing a multiple-channel transmitter including a plurality of selectable transmit-channel components, the plurality of selectable transmit-channel components sharing at least one element coupled to an output of a transmit signal modulator, the plurality of selectable transmit channel components forming at least first and second transmit channels configured to generate radio-frequency signals using at least a first and a second multiple-access communication protocols, wherein both the first and the second transmit channels use a direct launch signal transmission technique; and enabling at least one of the first and second transmit channels to transmit a communication signal using one of the first and second multiple-access communication protocols.
- 28. The method of claim 27, wherein the at least one element coupled to an output of the transmit signal modulator comprises a variable gain amplifier.
- 29. The method of claim 27, wherein the first multiple-access communication protocols comprises wideband code division multiple access (WCDMA).
- 30. The method of claim 27, wherein the second multiple-access communication protocols comprises global system for mobile (GSM) communication.
- 31. The method of claim 27, wherein providing further comprises forming a third transmit channel configured to generate radio-frequency signals using a third multiple-access communication protocols, wherein both the third transmit channel uses a direct launch signal transmission technique.
- 32. The method of claim 31, wherein the third multiple-access communication protocol comprises enhanced data for GSM evolution.
- 33. The method of claim 27, further comprising:
providing a multiple channel receiver configured to receive radio-frequency signals using at least the first and second multiple-access communication protocols, said multiple channel receiver including a plurality of selectable receive channel components, the plurality of selectable receive channel components coupled to demodulation electronics configured to produce an in-phase data signal channel and a quadrature data channel; and enabling at least one of the multiple receive channels to receive a communication signal using one of the first and second multiple-access communication protocols.
- 34. The method of claim 33, wherein each of the in-phase data signal channel and the quadrature data signal channel comprise a variable gain amplifier.
- 35. The method of claim 33, wherein each of the in-phase data signal channel and the quadrature data signal channel comprise a second-order bandpass filter.
- 36. The method of claim 33, wherein each of the in-phase data signal channel and the quadrature data signal channel comprise at least one additional bandpass filter.
- 37. The method of claim 36, wherein the at least one additional bandpass filter has a filter order greater than two.
- 38. The method of claim 33, wherein each of the in-phase data signal channel and the quadrature data signal channel comprise a direct-coupled offset corrector.
- 39. The method of claim 38, wherein the direct-coupled offset corrector comprises a sample and hold circuit.
- 40. The method of claim 38, wherein the direct-coupled offset corrector comprises a continuous servo loop.
- 41. A multiple-mode multiple band transceiver, comprising:
a multiple-channel transmitter including a plurality of selectable transmit-channel components, the plurality of selectable transmit-channel components sharing at least one element coupled to a modulator, the plurality of selectable transmit channel components forming at least first and second transmit channels configured to generate radio-frequency signals using at least a first and a second multiple-access communication protocol, wherein both the first and the second transmit channels use a direct launch signal transmission technique; and a first switch configured to enable at least one of the first and second transmit channels to transmit a communication signal using at least one of the first and the second multiple-access communication protocols.
- 42. The transceiver of claim 41, wherein the first multiple-access communication protocol comprises wideband code division multiple access (WCDMA).
- 43. The transceiver of claim 41, wherein the second multiple-access communication protocol comprises global system for mobile communication (GSM).
- 44. The transceiver of claim 41, further comprising a third transmit channel configured to generate radio-frequency signals using a third multiple-access communication protocol, wherein the third transmit channel uses a direct launch signal transmission technique.
- 45. The transceiver of claim 44, wherein the third multiple-access communication protocol comprises enhanced data for GSM evolution (EDGE).
- 46. The transceiver of claim 44, wherein the third multiple-access communication protocol comprises at least one of Personal Communications System (PCS) and Data Communications System (DCS).
- 47. The transceiver of claim 41, further comprising:
a multiple channel receiver configured to receive radio-frequency signals using at least the first and second multiple-access communication protocols, said multiple channel receiver including a plurality of selectable receive channel components, the plurality of selectable receive channel components coupled to a demodulator configured to produce an in-phase data signal channel and a quadrature data channel; and a second switch configured to enable at least one of the first and second receive channels to receive a communication signal using one of the first and second multiple access communication protocols.
- 48. The transceiver of claim 47, wherein a variable gain amplifier is coupled to an output of the demodulator.
- 49. The transceiver of claim 47, wherein each of the in-phase data signal channel and the quadrature data signal channel comprise a variable gain amplifier.
- 50. The transceiver of claim 47, wherein each of the in-phase data signal channel and the quadrature data signal channel comprise a second-order bandpass filter.
- 51. The transceiver of claim 47, wherein each of the in-phase data signal channel and the quadrature data signal channel comprise at least one additional bandpass filter.
- 52. The transceiver of claim 51, wherein the at least one additional bandpass filter has a filter order greater than two.
- 53. The transceiver of claim 47, wherein each of the in-phase data signal channel and the quadrature data signal channel comprise a direct-coupled offset corrector.
- 54. The transceiver of claim 53, wherein the direct-coupled offset corrector comprises a sample and hold circuit.
- 55. The transceiver of claim 53, wherein the direct-coupled offset corrector comprises a continuous servo loop.
CROSS-REFERENCE TO RELATED APPLICATION
[0001] This application is a continuation-in-part of copending U.S. utility application entitled, “System and Process for Shared Functional Block CDMA and GSM Communication Transceivers,” having Ser. No. 09/298,315, filed Apr. 23, 1999, which is entirely incorporated herein by reference.
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
09298315 |
Apr 1999 |
US |
Child |
10444803 |
May 2003 |
US |