Huawei Technologies Co., Limited

Songlin Shuai

Yong Zhang

Hua Cai

Guangjian Wang

Jia He

Lin Huang

Xianbin Yu

Mingde Du

Yingdong Ma

Zijie Lu

This application discloses a signal generating method, apparatus, and system. One example method includes: performing cyclic electro-optic modulation on a first signal to generate a first optical frequency comb signal, where the first signal is a signal output by a laser source, the first optical frequency comb signal includes a target spectral component, and a frequency of the target spectral component is equal to a sum of or a difference between a frequency of the first signal and a frequency of a target signal; performing first filtering processing on the first optical frequency comb signal to generate the target spectral component; and generating the target signal based on a heterodyne beat frequency of the first signal and the target spectral component.

Signal generating method, apparatus, and system

The present application relates to the field of antenna technologies, and discloses a shared-aperture antenna and a base station, to resolve a problem of sharing an aperture between antenna arrays working in different frequency bands. The shared-aperture antenna includes a dielectric substrate, a microstrip antenna array, and an electrically small antenna array, where the microstrip antenna array includes rows of microstrip patch antenna units uniformly distributed in arrays, and the microstrip patch antenna units fit a surface of the dielectric substrate; the electrically small antenna array includes electrically small antenna units that are parallel to each other; and the electrically small antenna units are inserted at intervals between the microstrip patch antenna units, and fit the surface of the dielectric substrate.

Shared-aperture antenna and base station

An outdoor unit includes: a transmitting module configured to transmit a signal; a splitter module configured to split the signal into two branches, where one branch is input into a amplifier, and the other branch is input into a duplexer; and the amplifier is configured to amplify the signal from the splitter module; the duplexer is configured to filter the signal from the splitter module and then output the signal to an antenna, and filter an external signal received by the antenna and then output the external signal to a combining module; the combining module is configured to combine the signal output by the amplifier with the signal output by the duplexer, and then output a combined signal to a receiving module; and the receiving module is configured to receive the combined signal output by the combining module.

Radio frequency signal loopback method and outdoor unit

Embodiments of the present invention disclose a frequency mixing circuit and a method for suppressing local oscillation leakage in the frequency mixing circuit, where a mixed input signal and a local oscillation signal are involved, and local oscillation leakage can be effectively reduced by using a frequency mixing circuit whose structure is simpler and is easier to be implemented. The frequency mixing circuit includes a direct current bias circuit, where the direct current bias circuit includes a direct current bias voltage source used for reducing a local oscillation current. The frequency mixing circuit is mainly applied to frequency mixing, and especially to a case where an intermediate frequency signal is mixed with a local oscillation signal to output a radio frequency signal.

Growing community of inventors

Chengdu, China

Songlin Shuai