Procedure for forming low power levels in a radio telephone transmitter

Claim 1

A circuit for forming lower power levels in a transmitter of a radio telephone, in which a radio frequency signal (RF signal) is conducted through an amplifier stage to an output of the transmitter, comprising: a source divider for dividing the RF signal which is before the amplifier stage (1) into two branches; means for forming high power levels by conducting in one of the branches the RF signal into said amplifier stage (1) by which the high power levels are formed; means for forming low power levels by conducting in the other of the branches the RF signal to an element (b) by which the low power levels are produced; and means for combining said branches in the output (RFout) of the transmitter, the high power levels each having a magnitude greater than each of the low power levels, each of the means for forming high power levels and the means for forming low power levels receiving respective control signals derived from control logic of the radio telephone so as to allow the means for forming low power levels to conduct the RF signal to the element and thereby bypass the amplifier stage when low power levels are desired and so as to allow the means for forming high power levels to conduct the RF signal into the amplifier stage when high power levels are desired.