H - Electricity – 04 – B
Patent
H - Electricity
04
B
H04B 1/02 (2006.01) H03C 3/10 (2006.01) H03G 3/02 (2006.01) H03G 3/10 (2006.01) H03G 3/30 (2006.01) H04B 1/04 (2006.01) H04B 1/38 (2006.01) H04B 1/40 (2006.01) H04B 7/26 (2006.01) H04Q 7/20 (2006.01) H04Q 7/30 (2006.01)
Patent
CA 2334157
In a transmitter circuit designed to operate over a specified transmit frequency range, information as to the specific frequency within the specified transmit frequency range at which the transmit up-converter of the transmitter circuit is to be operated, is used to generate a control signal for a high-power amplifier within the transmitter circuit, where the high-power amplifier automatically optimizes its operations based on the frequency indicated by the control signal. For example, for the transmitter circuit of a PCS base station transmitter, control signals received by the transmit up-converter from an alarm control board identify the particular 5-MHZ or 15-MHZ PCS frequency block for the base station transmitter. The up-converter uses that frequency information to generate a two-bit control signal identifying one of three 20-MHZ frequency sub-ranges within the 60-MHZ PCS forward-link transmit frequency range. The high-power amplifier uses that two- bit control signal to retrieve values from memory for tunable parameters and uses those tunable parameters to optimize its operations, thereby achieving acceptable low levels of intermodulation distortion at any PCS frequency block within the full 60-MHZ PCS frequency range.
Garcia Jose Marcelino
Levitine Vladimir
Kirby Eades Gale Baker
Lucent Technologies Inc.
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