Enhanced wideband transceiver
A method for operating an integrated transceiver, comprising coupling an operating transmitter and an operating receiver within the integrated wideband receiver, inputting a signal into the operating transmitter, performing a first conversion of the signal, wherein the signal is converted into a second signal, transmitting the second signal into the operating receiver, performing a second conversion of the signal, wherein the signal is converted into a third signal, transmitting the third signal into the operating transmitter, and adjusting the operating transmitter.
1. A transceiver, comprising:
a transmitter operable to convert baseband communication signals into corresponding RF communication signals;
a receiver operable:
to convert received RF communication signals into corresponding baseband communication signals; and
to convert RF feedback signals into corresponding baseband feedback signals; and
signal coupling elements operable to couple at least a portion of the RF communication signals of the transmitter as RF feedback signals to the receiver for conversion into corresponding baseband feedback signals and to couple at least a portion of the baseband feedback signals to the transmitter, wherein the signal coupling elements are operable to switch between a transmission configuration in which the signal coupling elements couple at least a portion of the RF communication signals of the transmitter as RF feedback signals to the receiver for conversion into corresponding baseband feedback signals and couple at least a portion of the baseband feedback signals to the transmitter and a reception configuration in which the signal coupling elements do not couple the RF communication signals of the transmitter to the receiver.
2. The transceiver as defined in claim 1 , wherein the RF communication signals of the transmitter and the RF feedback signals are in a transmit frequency band and the RF communication signals of the receiver are in a receive frequency band different from the transmit frequency band.
3. The transceiver as defined in claim 1 , comprising multiple transmitters and multiple sets of signal coupling elements, each set of signal coupling elements being operable to couple its respective transmitter to the receiver to couple at least a portion of the RF communication signals of its respective transmitter as RF feedback signals to the receiver and at least a portion of respective baseband feedback signals to its transmitter, wherein each set of signal coupling elements is operable to switch between a transmission configuration in which the subject set of signal coupling elements couple at least a portion of the RF communication signals of its respective transmitter as RF feedback signals to the receiver for conversion into corresponding baseband feedback signals and couple at least a portion of the baseband feedback signals to the respective transmitter and a reception configuration in which the subject set of signal coupling elements do not couple the RF communication signals of the respective transmitter to the receiver.
4. The transceiver as defined in claim 1 , wherein the transmitter comprises a control element responsive to the baseband feedback signals to perform a control action selected from a group consisting of:
training operation of the transmitter;
adaptively training operation of the transmitter;
linearizing operation of the transmitter; and
adjusting predistortion of the transmitter.
5. The transceiver as defined in claim 1 , wherein the baseband signals are digital signals and the RF signals are analog signals.
6. The transceiver as defined in claim 5 , wherein the baseband feedback signals are sampled signals.
7. The transceiver as defined in claim 1 , wherein the transmitter comprises a power amplifier and a baseband to RF up-converter feeding the power amplifier, and the portions of the RF communication signals are tapped from a location selected from a group consisting of:
the baseband to RF up-converter;
the power amplifier;
an output of the baseband to RF up-converter;
an input of the power amplifier; and
the output of the power amplifier.
8. The transceiver as defined in claim 1 , wherein the receiver comprises an RF to baseband down-converter and a low noise amplifier feeding the down-converter, and the portions of the RF communication signals of the transmitter are coupled as RF feedback signals to a location selected from a group consisting of:
an input of the low noise amplifier;
the low noise amplifier;
an output of the low noise amplifier;
an input of the down-converter; and
the down-converter.
9. The transceiver as defined in claim 1 , wherein the receiver comprises an RF to baseband down-converter and a low noise amplifier feeding the down-converter, and the portions of the baseband feedback signals of the transmitter are coupled to a location selected from a group consisting of:
the down-converter;
an output of the down-converter; and
a location downstream of the down-converter.
10. A method of operating a transceiver, comprising:
operating a transmitter of the transceiver to convert baseband communication signals into corresponding RF communication signals;
operating a receiver of the transceiver to convert RF communication signals into corresponding baseband communication signals;
coupling at least a portion of the RF communication signals of the transmitter as RF feedback signals to the receiver;
operating the receiver to convert the RF feedback signals into corresponding baseband feedback signals; and
coupling at least a portion of the baseband feedback signals to the transmitter, wherein coupling at least a portion of the RF communication signals and coupling at least a portion of the baseband feedback signals comprises switching cowling between a transmission configuration in which the signal coupling elements couple at least a portion of the RF communication signals of the transmitter as RF feedback signals to the receiver for conversion into corresponding baseband feedback signals and couple at least a portion of the baseband feedback signals to the transmitter and a reception configuration in which the signal coupling elements do not couple the RF communication signals of the transmitter to the receiver.
11. The method as defined in claim 10 , wherein the RF communication signals of the transmitter are in a transmit frequency band and the RF communication signals of the receiver are in a receive frequency band different from the transmit frequency band.
12. The method as defined in claim 10 , wherein the transceiver comprises multiple transmitters and multiple sets of signal coupling elements, the method comprising operating each set of signal coupling elements to couple its respective transmitter to the receiver to couple at least a portion of the RF communication signals of its respective transmitter as respective RF feedback signals to the receiver and at least a portion of respective baseband feedback signals to its transmitter, wherein operating each set of signal coupling elements comprises switching the set of signal coupling elements between a transmission configuration in which the signal coupling elements couple at least a portion of the RF communication signals of the transmitter as RF feedback signals to the receiver for conversion into corresponding baseband feedback signals and couple at least a portion of the baseband feedback signals to the transmitter and a reception configuration in which the signal coupling elements do not couple the RF communication signals of the transmitter to the receiver.
13. The method as defined in claim 10 , comprising controlling the transmitter responsive to the baseband feedback signal to perform a control action selected from a group consisting of:
training operation of the transmitter;
adaptively training operation of the transmitter;
linearizing operation of the transmitter; and
adjusting predistortion of the transmitter.
14. The method as defined in claim 10 , wherein the baseband signals are digital signals and the RF signals are analog signals.
15. The method as defined in claim 14 , wherein the baseband feedback signals are sampled signals.
16. The method as defined in claim 10 , wherein the transmitter comprises a power amplifier and a baseband to RF up-converter feeding the power amplifier, comprising tapping the portions of the RF communication signals from a location selected from a group consisting of:
the baseband to RF up-converter;
the power amplifier;
an output of the baseband to RF up-converter;
an input of the power amplifier; and
the output of the power amplifier.
17. The method as defined in claim 10 , wherein the receiver comprises an RF to baseband down-converter and a low noise amplifier feeding the down-converter, comprising coupling the portions of the RF communication signals of the transmitter as RF feedback signals to a location selected from a group consisting of:
an input of the low noise amplifier;
the low noise amplifier;
an output of the low noise amplifier;
an input of the down-converter; and
the down-converter.
18. The method as defined in claim 10 , wherein the receiver comprises an RF to baseband down-converter and a low noise amplifier feeding the down-converter, comprising coupling portions of the baseband feedback signals of the transmitter to a location selected from a group consisting of:
the down-converter;
an output of the down-converter; and
a location downstream of the down-converter.