Differential power amplifier and method in class AB mode

1. An amplifier, comprising:

a differential pair;

a pair of differential inductor coupled to the differential pair and to a power supply,

wherein the pair of differential inductor is not matched to a load; and

wherein the differential pair includes a pair of bias transistor supplying a pair of current to bias the amplifier in a Class AB mode.

2. The amplifier of claim 1 , wherein output of the differential pair is combined.

3. The amplifier of claim 1 , wherein the amplifier tunes out parasitic capacitance.

4. The amplifier of claim 1 , wherein the differential pair includes a positive and a negative branch.

5. The amplifier of claim 4 , wherein an electrical equivalent of each branch of the amplifier includes a capacitor interspersed between two unmatched resistors.

6. The amplifier of claim 5 , wherein the two unmatched resistors include a 50 Ohm resistor and a 200 Ohm resistor.

7. The amplifier of claim 1 , wherein the pair of bias current supplied is selected based on linearity between input voltage and output power of the amplifier.

8. A transmitter having an amplifier according to claim 1 .

9. A method, comprising:

presenting a load to a differential pair of a power amplifier; and

supplying a pair of bias current to bias the differential pair in a class AB mode;

wherein the differential pair is coupled to a pair of a differential inductor, which is coupled to a power supply and the pair of differential inductor is not matched to a load.

10. The method of claim 9 , further comprising combining the output of the differential pair.

11. The method of claim 9 , the power amplifier tunes out parasitic capacitance.

12. The method of claim 9 , wherein the differential pair includes a positive and a negative branch.

13. The method of claim 12 , wherein an electrical equivalent of each branch of the amplifier includes a capacitor interspersed between two unmatched resistors.

14. The method of claim 13 , wherein the two unmatched resistors include a 50 Ohm resistor and a 200 Ohm resistor.

15. The method of claim 9 , wherein the pair of bias current supplied is selected based on linearity between input voltage and output power of the amplifier.

16. The power amplifier of claim 1 , wherein the load comprises a balun.

17. The method of claim 9 , wherein the load comprises a balun.

18. A power amplifier, comprising:

a pair of difference means for producing a difference;

a pair of differential inductors means for producing differential inductance coupled to the pair of the difference means and to a power supply means for supplying power,

wherein the pair of differential inductor means is not matched to a load means for receiving an output from the pair of differential inductor means; and

wherein the pair of difference means includes a bias switching means for supplying a pair of bias current to bias the power amplifier in a Class AB mode.

19. The amplifier of claim 18 , wherein the load means comprises a balun.