Linear and Non-Linear Dual Mode Transmitter

A transmitter configured to selectable operate over two communications modes, comprising:

• a modulator to produce a modulated signal according to a first communications mode or a second communications mode;
• and
• an amplifier coupled to the modulator to produce an amplified modulated signal;
• wherein a first voltage biases the amplifier during the first communications mode of the modulator and a second voltage biases the amplifier during the second communications mode of the modulator;
• and
• wherein the modulator includes a feed forward link that determines the selection of the first voltage or the second voltage based on the selected communications mode of the modulator.

A Bluetooth transmitter configured to selectable operate over a linear communications mode and a non-linear communications mode, comprising:

• a modulator to produce a modulated signal according to the linear communication mode or the non-linear communications mode;
• and
• an amplifier coupled to the modulator to produce an amplified modulated signal;
• wherein a first voltage biases the amplifier during the linear communications mode of the modulator and a second voltage biases the amplifier during the non-linear communications mode of the modulator;
• and
• wherein the second voltage lowers the gain of the amplifier for the non-linear communications mode relative to that of the linear communications mode.

A transmitter configured to selectable operate over a linear communications mode and a non-linear communications mode, comprising:

• an amplifier to amplify a modulated signal;
• wherein a first voltage biases the amplifier when the modulated signal is a linear modulated signal and a second voltage biases the amplifier when the modulated signal is a non-linear modulated signal;
• and
• the amplifier biased by the first and second voltages to lower the gain for the non-linear modulated signal relative to the linear modulated signal.