Direct digital frequency generation using time and amplitude

1. An apparatus comprising:

an oscillator configured to provide an oscillator signal having an oscillator frequency;

a first transmitter including a first transmit digital-to-time converter (DTC) configured to receive the oscillator signal and to provide a first transmit signal having a first transmit frequency;

a first receiver, the first receiver configured to receive the oscillator signal and to provide a first receiver signal having a first receive frequency; and

wherein each of the oscillator frequency, the first transmit frequency and the first receive frequency is a different frequency than each other frequency of the oscillator frequency, the first transmit frequency and the first receive frequency.

2. The apparatus of claim 1 , wherein the first transmitter includes a modulator configured to receive first modulation information and to provide the first transmit signal using the first modulation information.

3. The apparatus of claim 2 , wherein the modulator includes a Cartesian modulator configured to receive Cartesian symbols and to provide the first transmit signal using the Cartesian symbols.

4. The apparatus of claim 2 , wherein the first transmit DTC is the modulator and is configured to receive phase modulation information and to provide the first transmit signal using the phase modulation information.

5. The apparatus of claim 1 , wherein the first transmit DTC is configured to receive first phase ramp information and to provide the first transmit signal having the first transmit frequency using the first phase ramp information.

6. The apparatus of claim 1 , wherein the first transmitter is configured to process and transmit first information according to a first communication protocol; and

wherein the first receiver is configured to receive and process second information according to the first communication protocol.

7. The apparatus of claim 6 , including a second transmitter, the second transmitter including a second transmit DTC, the second transmit DTC configured to receive the oscillator signal and to provide a second transmit signal.

8. The apparatus of claim 7 , wherein the second transmitter is configured to process and transmit third information according to a communication protocol different from the first communication protocol.

9. The apparatus of claim 7 , wherein the second transmit DTC is configured to receive second phase ramp information and to provide the second transmit signal having a second transmit frequency using the second phase ramp information.

10. The apparatus of claim 9 , wherein the first phase ramp information and the second phase ramp information are the same phase ramp information.

11. The apparatus of claim 9 , wherein the first phase ramp information and the second phase ramp information are different phase ramp information.

12. The apparatus of claim 9 , wherein the oscillator frequency is different from the second transmit frequency.

13. The apparatus of claim 9 , wherein the second transmit frequency is different from the first receive frequency.

14. The apparatus of claim 13 , wherein the second transmit frequency and the first receive frequency are different than an integer harmonic frequency of the oscillator frequency.

15. A non-transitory machine-readable medium including instructions that, when performed by a machine, cause the machine to:

generate an oscillator signal having and oscillator frequency using a central frequency synthesizer;

receive the oscillator signal at a first digital-to time converter (DTC) of a first transmitter;

provide a first transmit signal having a first transmit frequency using the first DTC;

receive the oscillator signal at a second DTC of a first receiver;

provide a first receiver signal having a first receive frequency using the second DTC; and

wherein each of the oscillator frequency, the first transmit frequency and the first receive frequency is a different frequency than each other frequency of the oscillator frequency, the first transmit frequency and the first receive frequency.

16. The non-transitory machine-readable medium of claim 15 , including instructions that, when performed by the machine, cause the machine to:

receive first modulation information at a modulator of the first transmitter; and

provide the first transmit signal using the first modulation information.

17. The non-transitory machine-readable medium of claim 16 , wherein the modulator includes a Cartesian modulator; and

wherein the non-transitory machine-readable medium includes instructions that, when performed by the machine, cause the machine to receive Cartesian symbols and to provide the first transmit signal using the Cartesian symbols.

18. The non-transitory machine-readable medium of claim 16 , wherein the first transmit DTC is the modulator; and

wherein the non-transitory machine-readable medium includes instructions that, when performed by the machine, cause the machine to receive phase modulation information and to provide the first transmit signal using the phase modulation information.

19. The non-transitory machine-readable medium of claim 15 , including instructions that, when performed by the machine, cause the machine to:

receive first phase ramp information at the first transmit DTC;

provide the first transmit signal having the first transmit frequency using the first phase ramp information.

20. The non-transitory machine-readable medium of claim 15 , wherein the first transmit frequency and the first receive frequency are different than an integer harmonic frequency of the oscillator frequency.