Single oscillator transceiver
View Patent ↗A frequency plan is provided for particular use in a transceiver. Advantageously, a single oscillator may be used to generate desired frequency signal. One or more power splitters receive the signal and equally divide the signal into first and second signals having a frequency substantially equal to the original. Multipliers on each arm of the transceiver receive a signal and increase the frequency of the signal. Ultimately, multiple signals having different frequencies may be transmitted over the same cable due in part to the generated frequency separation between the signals. In one particular aspect, the frequency plan provides a two-thirds relationship between the frequencies of the multiple signals.
1. A transceiver having a transmitted signal and a received signal, said transceiver comprising:
a single oscillator configured to generate an oscillator signal at a desired frequency;
a power splitter configured to receive said oscillatory signal and to divide said signal into first and second signals having a frequency substantially equal to said desired frequency of said oscillator signal;
a first multiplier configured to receive said first signal and to increase the frequency of said first signal; and
a second multiplier configured to receive said second signal and to increase the frequency of said second signal, such that the increased frequencies of said first and second signals represent a two-thirds relationship between the frequencies.
2. The transceiver of claim 1 , wherein said transmitted signal and said received signal each comprise one of: K band frequencies, Ka band frequencies, FCC assigned internet access band frequencies, home satellite band frequencies, and KuTV band frequencies.
3. The transceiver of claim 1 , wherein said transmitted and said received signals comprise different frequencies.
4. The transceiver of claim 1 , wherein said transceiver is one of a high side transceiver and a low side transceiver.
5. The transceiver of claim 1 , wherein one of said first and second multipliers is implemented as part of a sub-harmonic mixer configuration.
6. The transceiver of claim 5 , wherein said single oscillator is a single free running oscillator and wherein said single free running oscillator is allowed to drift.
7. The transceiver of claim 1 , wherein the relationship between the frequencies of said first and second signals is the ratio of the receive to transmit frequency conversion.
8. A ground satellite communication system, said system comprising:
an indoor unit and an outdoor unit in communication with said indoor unit, said outdoor unit comprising a transceiver system having:
a single oscillator, associated with a transceiver, configured to generate a first oscillator signal, wherein said transceiver is configured to divide said first oscillator signal into a second oscillator signal and a third oscillator signal, and wherein said transceiver is configured to perform frequency scaling to create a ⅔ relationship between the frequencies of said second oscillator signal and said third oscillator signal;
a receiving section configured to utilize said second oscillator signal to facilitate frequency conversion in said receive section; and
a transmitting section configured to utilize said third oscillator signal to facilitate frequency conversion in said transmit section.
9. The system of claim 8 , said transceiver further comprising a first multiplier configured to scale the frequency of at least one of said second and third oscillator signals such that said second and third oscillator signals have different frequencies from each other.
10. The system of claim 8 , said transceiver further comprising a sub-harmonic mixer configured to scale the frequency of at least one of said second and third oscillator signals such that said second and third oscillator signals have different frequencies from each other.
11. The system of claim 9 , said transceiver further comprising a second multiplier configured to scale the frequency of at least one of said second and third oscillator signals, wherein one of said first and second multipliers is implemented as part of a sub-harmonic mixer configuration.
12. The transceiver of claim 8 , wherein said transmitting section transmits a transmitted signal, wherein said receiving section receives a received signal, and wherein said transmitted signal and said received signal each comprise one of: K band frequencies, Ka band frequencies, FCC assigned internet access band frequencies, home satellite band frequencies, and KuTV band frequencies.
13. The transceiver of claim 8 , wherein said transceiver performs one of a high side frequency conversion and a low side frequency conversion.
14. The transceiver of claim 8 , wherein said single oscillator is a single free running oscillator and wherein said single free running oscillator is allowed to drift.
15. The transceiver of claim 8 , wherein the relationship between the frequencies of said second and third oscillator signals is the ratio of the receive to transmit frequency conversion.
16. A signal transceiving method comprising the steps of:
receiving a receive signal having a first frequency;
receiving a transmit signal having a second frequency, wherein said first frequency is not equal to said second frequency;
generating an oscillator signal from a single oscillator, associated with a transceiver;
splitting said oscillator signal into a first signal and a second signal;
scaling the frequency of said first signal to obtain a desired multiple of said first signal;
scaling the frequency of said second signal to obtain a desired multiple of said second signal, wherein a ⅔ relationship exists between the scaled frequencies of said first signal and said second signal;
mixing said transmit signal with the scaled version of said second signal to facilitate frequency conversion in a transmit section of said transceiver; and
mixing said receive signal with the scaled version of said first signal to facilitate frequency conversion in a receive section of said transceiver.
17. The signal transceiving method of claim 16 , wherein each of said scaling steps are performed using at least one of: a multiplier and a sub-harmonic mixer.
18. The signal transceiving method of claim 16 , wherein said transmitting section transmits a transmitted signal, wherein said receiving section receives a received signal, and wherein said transmitted signal and said received signal each comprise one of: K band frequencies, Ka band frequencies, FCC assigned internet access band frequencies, home satellite band frequencies, and KuTV band frequencies.
19. The signal transceiving method of claim 16 , wherein said transceiver performs one of a high side frequency conversion and a low side frequency conversion.
20. The signal transceiving method of claim 16 , wherein said single oscillator is a single free running oscillator and wherein said single free running oscillator is allowed to drift.
21. The signal transceiving method of claim 16 , wherein the relationship between the frequencies of said first and second signals is the ratio of the receive to transmit frequency conversion.