Multi-band radio frequency modulator
First Claim
1. A method comprising:
- operating two or more communication modes in a single modulation path of a variable radio frequency (RF) modulator included in a multi-mode wireless communication device (WCD) that supports the two or more communication modes; and
processing a signal from a user of the multi-mode WCD according to a selected one of the two or more communication modes by setting parameters of variable components along the single modulation path of the variable RF modulator based on the selected one of the communication modes.
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Abstract
Techniques are described that allow operation according to two or more different communication modes in a single modulation path of a variable radio frequency (RF) modulator within a multi-mode wireless communication device (WCD). The multi-mode WCD may detect a service signal from a base station within a wireless communication system and select a communication mode in which to operate based on the communication mode of the detected service signal. The techniques described herein enable a digital controller within the RF modulator to set parameters of variable components along the single modulation path of the RF modulator based on the selected communication mode. In this way, the single modulation path of the variable RF modulator may be set to process a baseband signal from a user of the WCD according to the communication mode in which the multi-mode WCD is operating.
48 Citations
44 Claims
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1. A method comprising:
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operating two or more communication modes in a single modulation path of a variable radio frequency (RF) modulator included in a multi-mode wireless communication device (WCD) that supports the two or more communication modes; and
processing a signal from a user of the multi-mode WCD according to a selected one of the two or more communication modes by setting parameters of variable components along the single modulation path of the variable RF modulator based on the selected one of the communication modes. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A computer-readable medium comprising instructions that cause the programmable processor to:
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operate two or more communication modes in a single modulation path of a variable radio frequency (RF) modulator included in a multi-mode wireless communication device (WCD) that supports the two or more communication modes; and
process a signal from a user of the WCD according to a selected one of the two or more communication modes by setting parameters of variable components along the single modulation path of the variable RF modulator based on the selected one of the communication modes. - View Dependent Claims (8, 9)
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- 10. A multi-mode wireless communication device (WCD) that supports two or more communication modes comprising a variable radio frequency (RF) modulator that operates the two or more communication modes in a single modulation path of the variable RF modulator, wherein the variable RF modulator processes a signal from a user of the multi-mode WCD according to a selected one of the two or more communication modes by setting parameters of variable components along the single modulation path of the variable RF modulator based on the selected one of the communication modes.
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17. A method comprising:
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selecting a communication mode in which to run a multi-mode wireless communication device (WCD) based on a detected service signal;
determining parameters and output power for a frequency band of the selected communication mode;
setting parameters of variable components along a single modulation path of a variable radio frequency (RF) modulator included in the multi-mode WCD based on the determined parameters; and
processing a signal from a user of the multi-mode WCD with the variable RF modulator according to the selected communication mode. - View Dependent Claims (18, 19, 20, 21, 22, 24)
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23. The method of clam 22, wherein processing a signal from a user of the multi-mode WCD comprises:
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filtering a baseband user signal with the baseband filters based on the parameter setting;
amplifying the baseband user signal with the baseband variable gain amplifiers based on the parameter setting to generate an intermediate frequency user signal;
applying the intermediate frequency user signal to a RF mixer associated with the frequency band of the selected communication mode;
mixing the intermediate frequency user signal and a RF signal from a local oscillator with the RF mixer to generate a RF user signal;
attenuating the RF user signal with the one of the RF variable gain amplifier based on the parameter setting; and
amplifying the RF user signal with the one of the driver amplifier based on the parameters setting to provide sufficient gain and output power for the frequency band of the selected communication mode.
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25. A computer-readable medium comprising instructions that cause a programmable processor to:
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select a communication mode in which to run a multi-mode wireless communication device (WCD) based on a detected service signal;
determine parameters and output power for a frequency band of the selected communication mode;
set parameters of variable components along a single modulation path of a variable radio frequency (RF) modulator included in the multi-mode WCD based on the determined parameters; and
process a signal from a user of the multi-mode WCD with the variable RF modulator according to the selected communication. - View Dependent Claims (26, 27, 28)
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29. A multi-mode wireless communication device (WCD) comprising:
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a receiver that detects a service signal;
a mobile station modem (MSM) that selects a communication mode in which to run the multi-mode WCD based on the detected service signal, and determines parameters and output power for a frequency band of the selected communication mode; and
a variable radio frequency (RF) modulator including a digital controller that sets parameters of variable components along a single modulation path of the variable RF modulator based on the determined parameters from the MSM, wherein the variable RF modulator processes a signal from a user of the WCD according to the selected communication mode. - View Dependent Claims (30, 31, 32, 33, 34, 36, 37, 38, 39, 40, 42, 43, 44)
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35. The multi-mode WCD of clam 34, wherein:
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the baseband filters filter a baseband user signal based on the parameter setting;
the baseband variable gain amplifiers amplify the baseband user signal based on the parameter setting to generate an intermediate frequency user signal, and apply the intermediate frequency user signal to a RF mixer associated with the frequency band of the selected communication mode;
the RF mixer mixes the intermediate frequency user signal and a RF signal from a local oscillator to generate a RF user signal;
the one of the RF variable gain amplifiers attenuates the RF user signal based on the parameter setting; and
the one of the driver amplifiers amplifies the RF user signal based on the parameter setting to provide sufficient gain and output power for the frequency band of the selected communication mode.
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41. The multi-mode WCD of clam 29, wherein the multi-mode WCD supports two or more communication modes.
Specification