Power amplifier with dynamically added supply voltages
An amplifier for amplifying a radio signal to a defined power output level is presented, wherein the amplifier comprises an amplifier input port, an amplifier output port, a first transistor for amplifying the radio signal received at a first transistor control input, wherein a first transistor output of the first transistor is supplied by a first power source; a at least second transistor for supplying the first transistor from a at least second power supply source. The at least second power supply source is added by the at least second transistor as a function of the power output level of the amplifier.
1. An amplifier for amplifying a radio signal to a defined power output level, the amplifier comprising:
an amplifier input port:
an amplifier output port;
a first transistor for amplifying the radio signal received at a first transistor control input, wherein a first transistor output of the first transistor is supplied by a first power source;
at least one second transistor for supplying the first transistor from at least a second power supply source, wherein the at least second power supply source is dynamically added as a function of the power output level of the amplifier
at least a first capacitor connecting a second transistor output of the at least one second transistor with the first transistor output of the first transistor.
2. The amplifier according to claim 1 , wherein the first power source is connected to the first transistor by a first diode.
3. The amplifier according to claim 2 , wherein a first inductance is connected in series with the first diode.
4. The amplifier according to claim 1 , wherein the second power source is connected to the second transistor by a second diode.
5. The amplifier according to claim 4 , wherein a second inductance is connected in series with the second diode.
6. The amplifier according to claim 1 wherein a second input port of the at least one second transistor is connected to a second bias level source through a third diode.
7. The amplifier according to claim 1 wherein a fourth diode is inserted between a control input of the at least one second transistor and the emitter of the at least one second transistor.
8. The amplifier according to claim 1 wherein at least one first voltage regulator for up-converting the voltage of the first power supply source forms the at least one second power supply source.
9. The amplifier according to claim 1 wherein at least one first voltage regulator for down-converting the voltage of the second power supply source forms the first power supply source.
10. A method for amplifying a radio signal to a defined power output level,
supplying a first transistor with a first power source;
supplying at least one second transistor;
supplying the first transistor from a second power source, wherein the second supply voltage from the second power source is dynamically added by the second transistor as a function of a power output level of the amplified radio signal,
connecting, by at least a first capacitor, a second transistor output of the at least one second transistor with the first transistor output of the first transistor.
11. An integrated circuit for an amplifier for amplifying a radio signal to a defined power output level, the amplifier comprising:
an amplifier input port:
an amplifier output port;
a first transistor for amplifying the radio signal received at a first transistor control input, wherein a first transistor output of the first transistor is supplied by a first power source;
a at least one second transistor for supplying the first transistor from at least a second power supply source, wherein the at least second power supply source is dynamically added by the at least one second transistor as a function of the power output level of the amplifier,
at least a first capacitor connecting a second transistor output of the at least one second transistor with the first transistor output of the first transistor.
12. A radio station with an amplifier for amplifying a radio signal to a defined power output level, the amplifier comprising:
an amplifier input port:
an amplifier output port;
a first transistor for amplifying the radio signal received at a first transistor control input, wherein a first transistor output of the first transistor is supplied by a first power source;
a at least one second transistor for supplying the first transistor from at least a second power supply source, wherein the at least second power supply source is dynamically added by the at least one second transistor as a function of the power output level of the amplifier,
at least a first capacitor connecting a second transistor output of the at least one second transistor with the first transistor output of the first transistor.
13. An active antenna system with an amplifier for amplifying a radio signal to a defined power output level, the amplifier comprising:
an amplifier input port:
an amplifier output port;
a first transistor for amplifying the radio signal received at a first transistor control input, wherein a first transistor output of the first transistor is supplied by a first power source;
a at least one second transistor for supplying the first transistor from at least a second power supply source, wherein the at least second power supply source is dynamically added by the at least one second transistor as a function of the power output level of the amplifier,
at least a first capacitor connecting a second transistor output of the at least one second transistor with the first transistor output of the first transistor.