Ca power measurement
AssigneeFuturewei Technologies, Inc.
InventorsWael Al-Qaq, Hong Jiang
Life of this patent
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Abstract
A system and method for transmitting and for detecting a transmission power level of a carrier of aggregated carrier signals is configured to generate a plurality of carrier signals as a carrier aggregated signal and to generate an outgoing radio frequency (RF) signal based on the carrier aggregated signal and to produce a feedback signal based the outgoing RF signal. The system process the feedback signal by down converting a first carrier signal within the feedback signal from RF, canceling a down converted harmonically-related signal or an ADC Fs related signal of a second carrier of the carrier aggregated signal and producing a signal representative of the output power of the first carrier of the carrier aggregated signal within the feedback signal.
Claims20
A transceiver capable of transmitting carrier aggregated signals, comprising:
- first analog front end transceiver circuitry for producing at least two outgoing radio frequency (RF) signals to power amplification circuitry that produce power amplified outgoing RF signals;
- filtering and diplexing circuitry that produce a carrier aggregated RF signal based on the power amplified outgoing RF signals;
- a coupler that produces a feedback signal based on carrier aggregated RF signal produced by the filtering and diplexing circuitry;
- and
- a measurement receiver coupled to receive and process the feedback signal that comprises the carrier aggregated signal, wherein the measurement receiver further includes:
- second analog front end circuitry for down converting a first carrier signal within the carrier aggregated RF signal from RF;
- and
- signal cancellation circuitry for aligning a digital representation of a down converted and harmonically-related signal second carrier signal produced by the second analog front end circuitry with a digital representation of a second carrier reference signal and for substantially canceling the down converted harmonically-related signal of second carrier of the carrier aggregated signal.
A measurement receiver for determining transmission power levels of individual carriers of outgoing carrier aggregated signals, comprising:
- an input for receiving a feedback signal based on a power amplified outgoing RF signal produced by transceiver circuitry;
- and
- analog front end circuitry for down converting a first carrier signal within the feedback signal from RF to one of intermediate frequency or baseband frequency;
- and
- signal cancellation circuitry for aligning a down converted and harmonically-related second carrier signal with a digital representation of the second carrier signal and for substantially canceling the down converted harmonically-related second carrier of the carrier aggregated signal.
A method for transmitting and detecting a transmission power level of a carrier of aggregated carrier signals, comprising:
- generating a plurality of carrier signals as a carrier aggregated signal;
- generating an outgoing radio frequency (RF) signal based on the carrier aggregated signal;
- producing a feedback signal based the outgoing RF signal;
- and
- processing the feedback signal by:
- down converting a first carrier signal within the feedback signal from RF;
- canceling a down converted harmonically-related signal of second carrier of the carrier aggregated signal;
- and
- producing a signal representative of the output power of the first carrier of the carrier aggregated signal within the feedback signal.
Dependencies are inferred from the claim text.