Patent ID: 7555268

Claim:
A radio frequency (RF) transmitter having multiple constant output power levels, the RF transmitter comprises: baseband transmit processing module operably coupled to encode outbound data into outbound baseband signals in accordance with one of a plurality of encoding protocols, wherein each of the plurality of encoding protocols includes multiple data rates; mixing module operably coupled to convert the outbound baseband signals into outbound RF signals; power amplifier operably coupled to amplify the outbound RF signals prior to transmission to produce amplified outbound RF signals; transmit power sensing module operably coupled to sense the amplified outbound RF signals to provide a transmit signal strength indication (TSSI); and transmit power control module operably coupled to adjust gain of at least one of the baseband transmit processing module, the mixing module, and the power amplifier based on the TSSI and the one of the plurality of encoding protocols such that, for a first encoding protocol of the plurality of encoding protocols, transmit power of the RF transmitter is at a first power level and for a second encoding protocol of the plurality of encoding protocols, the transmit power of the RF transmitter is at a second power level, wherein the first power level is greater than the second power level, wherein the transmit power control module includes: an adjust module operably coupled to combine a TSSI offset value with the TSSI to produce an adjusted TSSI; a first multiplexer operably coupled to output the TSSI when the one of the plurality of encoding protocols is the first encoding protocol and to output the adjusted TSSI when the one of the plurality of encoding protocols is the second encoding protocol to produce a selected TSSI; a gain control module operably coupled to produce gain settings for the at least one of the baseband transmit processing module, the mixing module, and the power amplifier based on the selected TSSI; a subtraction module operably coupled to subtract a gain offset from the gain settings to produce adjusted gain settings; and a second multiplexer operably coupled to output the gain settings when the one of the plurality of encoding protocols is the first encoding protocol and to output the adjusted gain settings when the one of the plurality of encoding protocols is the second encoding protocol.