Method and apparatus for correcting for a phase shift between a transmitter and a receiver
View Patent ↗A method and apparatus for correcting for a phase shift between a transmitter and receiver comprising the steps of: a) transmitting a signal from a transmitter ( 14 ); b) receiving the transmitted signal ( 16 ) at a receiver ( 20 ); c) comparing the received signal ( 17 ) to a reference signal; d) if a difference between the reference signal and the received signal ( 17 ) is greater than a predetermined value go to step e), if not go to step g); e) adjusting a frequency of the transmitted signal ( 16 ); f) go to step a); and g) calibration complete.
1. A method for adjusting phase comprising:
determining a phase difference between a transmitted signal and a received signal resulting from the transmitted signal;
adjusting a frequency of the transmitted signal in response to the determined phase difference so that an adjusted phase difference between the transmitted signal and the received signal is less than a first set phase difference;
wherein the step of adjusting further comprises:
initiating when the adjustments to the frequency of the transmitted signal can be made; and
discontinuing any further of the adjustments to the frequency of the transmitted signal when the determined phase difference is less than the first set phase difference.
2. A method as in claim 1 wherein said frequency of said transmitted signal is adjusted to a higher frequency.
3. A method as in claim 2 wherein said frequency is adjusted by an incremental step of no more than 0.05 percent of said frequency.
4. A method as in claim 1 wherein said frequency of said transmitted signal is adjusted to a lower frequency.
5. A method as in claim 4 wherein said frequency is adjusted by an incremental step of no more than 0.05 percent of said frequency.
6. A method as in claim 1 wherein said transmitted signal is a digital signal.
7. A method as in claim 1 wherein said transmitted signal is an analog signal.
8. A method as in claim 1 wherein said first set phase difference is 1 degree of phase difference.
9. The method as set forth in claim 1 wherein the first set phase difference is one degree.