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US 10,694,405 B2Granted
Apparatus and method for setting a local oscillator duty ratio based on an image distortion level
AssigneeFuturewei Technologies, Inc.
InventorsHong Jiang, Wael Al-Qaq
Life of this patent
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Abstract
An apparatus and method are provided for setting a local oscillator duty ratio based on an image distortion level. A first signal is transmitted utilizing a first X-phase path of a transmitter. Further, an image distortion level is measured in connection with the first signal. Based on the measurement, a duty ratio of a local oscillator is set, for reducing a distortion in connection with a transmission of a second signal utilizing a second Y-phase path of the transmitter.
Claims20
A method, comprising:
- transmitting a first signal utilizing a first X-phase path of a transmitter, transmission of the first signal utilizing a local oscillator of the transmitter set to a first duty ratio, wherein the local oscillator is shared by the first X-phase path of the transmitter and a second Y-phase path of the transmitter that is disabled during transmission of the first signal;
- receiving the first signal;
- measuring a first distortion level in connection with the received first signal;
- and
- based on the measurement of the first distortion level, setting the local oscillator of the transmitter to a second duty ratio, wherein the second duty ratio operates to reduce a second distortion level in connection with transmission of a second signal utilizing the second Y-phase path of the transmitter.
2 more elements
An apparatus, comprising:
- a transmitter including:
- a first X-phase path configured to transmit a first signal;
- a second Y-phase path configured to transmit a second signal, the second Y-phase path disabled during a transmission of the first signal;
- and
- a local oscillator shared by the first X-phase path and the second Y-phase path, wherein the first signal is generated with the local oscillator set to a first duty ratio and the second signal is generated with the local oscillator set to a second duty ratio;
- a receiver in communication with the transmitter, the receiver configured to receive the first signal and measure an first image distortion level in the first signal;
- and
- circuitry in communication with the receiver, the circuitry configured to set, based on the first image distortion level, the second duty ratio of the local oscillator to reduce a second image distortion level in connection with transmission of the second signal utilizing the second Y-phase path of the transmitter.
5 more elements
A transceiver device, comprising:
- a first X-phase path configured to transmit a first signal;
- a second Y-phase path configured to transmit a second signal, the second Y-phase path disabled during a transmission of the first signal;
- and
- a local oscillator shared by the first X-phase path and the second Y-phase path, wherein the first signal is generated with the local oscillator set to a first duty ratio and the second signal is generated with the local oscillator set to a second duty ratio, wherein
- a first image distortion level is measured in the first signal, and
- the second duty ratio of the local oscillator is set, based on the first image distortion level, to reduce a second image distortion level in connection with transmission of the second signal utilizing the second Y-phase path of the transmitter.
3 more elements
Dependencies are inferred from the claim text.