Method and system for software defined antenna control
Methods and systems for reducing AM/PM and AM/AM distortion are disclosed and may comprise selectively coupling and impedance matching one of a plurality of tunable antennas to a single programmable output stage comprising a single power amplifier on a chip in a transmitter. A programmable matching circuit comprising adjustable inductance and capacitance may be used to impedance match the antenna to the output stage. The selected tunable antenna may be coupled to the output stage utilizing a programmable switch array, which may comprise at least one integrated transistor, for example. The tunable antennas may be designed to operate in different frequency bands and to be tuned within one or more frequency bands. The programmable matching circuit may be integrated on the chip or external to the chip. The matching circuit capacitance may be integrated on-chip, and the inductance may be located off-chip.
1. A method for controlling signals in a wireless communication system, the method comprising:
selectively coupling, from within an integrated circuit comprising a single programmable output stage, said single programmable output stage to one or more antennas of a tunable antenna array; and
impedance matching said selectively coupled one or more antennas of said tunable antenna array to said single programmable output stage using a programmable matching circuit.
2. The method according to claim 1 , wherein said impedance matching comprises programmably adjusting at least an inductance and a capacitance in said programmable matching circuit.
3. The method according to claim 2 , wherein said capacitance is within said integrated circuit.
4. The method according to claim 2 , wherein said inductance is external to said integrated circuit.
5. The method according to claim 1 , comprising enabling said selectively coupled one of said plurality of tunable antennas utilizing a programmable switch array.
6. The method according to claim 5 , wherein said programmable switch array comprises at least one integrated transistor.
7. The method according to claim 1 , wherein each of said plurality of tunable antennas is configured to operate in a different frequency band.
8. The method according to claim 7 , comprising configuring a plurality of said tunable antennas to operate in a specific frequency band.
9. The method according to claim 7 , comprising tuning one or more of said plurality of tunable antennas to operate within one or more frequency bands.
10. The method according to claim 1 , wherein said programmable matching circuit is within said integrated circuit.
11. The method according to claim 1 , wherein said programmable matching circuit is external to said integrated circuit.
12. The method according to claim 1 , wherein said single programmable output stage comprises a single power amplifier.
13. A system for controlling signals in a wireless communication system, the system comprising:
one or more circuits comprising an integrated circuit having a single programmable output stage, said one or more circuits selectively couples said single programmable output stage to one or more antennas of a tunable antenna array; and
said one or more circuits comprising a programmable matching circuit that impedance matches said selectively coupled one or more antennas of said tunable antenna array to said single programmable output stage.
14. The system according to claim 13 , wherein said one or more circuits programmably adjusts at least an inductance and a capacitance in said programmable matching circuit.
15. The system according to claim 14 , wherein said capacitance is integrated within said integrated circuit.
16. The system according to claim 14 , wherein said inductance is external to said integrated circuit.
17. The system according to claim 13 , wherein said one or more circuits comprises a programmable switch array and enables said selective coupling one of a plurality of tunable antennas utilizing said programmable switch array.
18. The system according to claim 17 , wherein said programmable switch array comprises at least one integrated transistor.
19. The system according to claim 13 , wherein each of said plurality of tunable antennas is configured to operate in a different frequency band.
20. The system according to claim 19 , wherein said one or more circuits configures a plurality of said tunable antennas to operate in a specific frequency band.
21. The system according to claim 19 , wherein said one or more circuits tunes one or more of said plurality of tunable antennas to operate within one or more frequency bands.
22. The system according to claim 13 , wherein said programmable matching circuit is within said integrated circuit.
23. The system according to claim 13 , wherein said programmable matching circuit is external to said integrated circuit.
24. The system according to claim 13 , wherein said single programmable output stage comprises a single power amplifier.