H - Electricity – 04 – B
Patent
H - Electricity
04
B
H04B 1/04 (2006.01) H03G 3/20 (2006.01)
Patent
CA 2121018
- 1 - Abstract RF Amplifier with Signal-Level Control, and Radio Transmitter Equipped Therewith An RF power amplifier is known which has a digital feed- back control system for generating uniform RF pulses following each other successively in time. Also known is an RF amplifier for a TDMA radio signal whose power level changes from time interval to time interval. The object of the invention is to design a stably controlled RF amplifier for controlling the level characteristic of an RF signal, particularly a TDMA radio signal, whose desired-level characteristic is predetermined anew from one time interval to the next. The novel RF amplifier (PA) has a control circuit (CC) which controls a change of the level characteristic (SL) of an RF signal (Pin, Pout) from time interval to time - 2 - interval by evaluating the actual-level characteristic of the RF signal differently within two or more segments (AT, GT) of the respective time interval (T1[k]). Advan- tageously, the control action of the RF amplifier dur- ing a first segment (GT), in which the signal level changes from one step to the next, differs from that during the second segment (AT), in which the signal level is constant. Temporary storage of correction values permits stable off-line control. (Fig. 1)
Haberland Bernd
Hoen Gunther
Wolfle Ralf
Alcatel N.v.
Robic
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