Transmitter which adjusts peak-to-average power of a multicarrier signal by switching between a group of channels and a phase-adjusted group of channels

An apparatus for generating a multichannel peak-adjusted signal, the apparatus comprising:

• a first combiner receiving a first group of channels and producing a first multicarrier signal;
• a second combiner receiving a second group of channel and producing a second multicarrier signal;
• phase changing means for changing the phase of said first group of channels;
• a peak-adjusting device which controls an RF switch and is responsive to the first and second combiners, the peak-adjusting device receiving the first and second multicarrier signals and producing the multichannel peak-adjusted signal.

A multicarrier radio frequency transmitter comprising:

• a first radio frequency module comprising a frequency upconverter providing a first signal, the first signal comprising a first plurality of radio frequency channels;
• a second radio frequency module comprising a frequency upconverter providing a second signal, the second signal comprising a second plurality of radio frequency channels;
• a peak-adjusting device responsive to the first and second radio frequency modules, the peak-adjusting device producing a multichannel peak adjusted signal based on the first and second signals;
• a power amplifier responsive to the peak-adjusting device;
• and
• an antenna responsive to the power amplifier;
• a first combiner receiving the first and second signals and producing a first combined signal;
• a phase-changing device receiving the first signal and producing a phase-adjusted signal;
• a second combiner receiving the phase-adjusted signal and the second signal and producing a second combined signal;
• and
• a switch responsive to the first and second combiners, the switch selecting one of the first and second combined signals.

A method for adjusting peak-to-average power of a radio frequency signal, the method comprising the steps of:

• combining a first group of radio frequency, channels and a second group of radio frequency channels to produce a first combined signal;
• changing the phase of the first group of radio frequency channels to produce a group of phase-adjusted channels;
• combining the group of phase-adjusted channels and the second group of radio frequency channels to produce a second combined signal;
• selecting one of the first and second combined channels;
• and
• outputting the selected combined signal.