A wireless device and radio frequency channel calibration method
A technology of radio frequency channels and wireless devices, which is applied in the field of communication and can solve problems such as different phases of radio frequency channels
Active Publication Date: 2020-11-06
HUAWEI TECH CO LTD
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Problems solved by technology
[0005] This application provides a wireless device and a radio frequency channel calibration method, which solves the problem that the phase of the radio frequency channel is different due to device aging or temperature changes.
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Embodiment Construction
[0020] Before describing the present invention, first, the present application relates to the technical terms are introduced.
[0021] RF module, also known as radio frequency circuit, can be used to connect an antenna or multiple antennas. Alternatively, the RF module including but not limited to a filter, a low noise amplifier (English: low noise amplifier, LNA), analog to digital or digital to analog (English: analogue-to-digital / digital-to-analogue, A / D or D / A) converter or the like.
[0022] Band and channel, are used to represent the spectrum resources. Generally comprises a plurality of band channels. For example, 2.4 Gigahertz (GHz) frequency band may comprise 14 channels.
[0023] Radio frequency channel, means including an antenna and RF module for transmitting and receiving a signal path, an antenna and a radio frequency channel corresponding to a signal transceiving process.
[0024] Configuration of the communication system according to the embodiment of the pre...
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Embodiments of the present invention provide a wireless device and a radio frequency channel calibration method, which relate to the technical field of communications and are used to improve the accuracy of radio frequency channel calibration. The wireless device includes a first radio frequency module, a second radio frequency module and a processor, the first radio frequency module and the second radio frequency module work in the same frequency band; the first radio frequency module is connected to a calibration antenna, and is used to send calibration signals with the calibration antenna; The radio frequency module is connected to at least two antennas to be calibrated, and is used to receive calibration signals with each antenna in the at least two antennas to be calibrated; the second radio frequency module corresponds to at least two radio frequency channels, and the at least two radio frequency channels are respectively connected to at least two Corresponding to the calibration antenna, the number of at least two radio frequency channels and at least two calibrated antennas is the same; the processor is used to determine the device phase difference of each radio frequency channel in the at least two radio frequency channels, and use each radio frequency channel in the at least two radio frequency channels The device phase difference calibration corresponds to the RF channel.
Description
Technical field [0001] The present invention relates to communications technologies, and in particular relates to a radio apparatus and a calibration method of a radio frequency channel. Background technique [0002] MIMO (English: multiple input, multiple output, MIMO) technology refers to both transmitter and a receiver using multiple antennas. MIMO technology can not increase the spectrum resources and increase bandwidth antenna transmit power. [0003] Since the device aging, temperature variations or other reasons, the antenna receives RF signals through a plurality of devices composed of the (RF) channel, a phase may be different. Results in a different phase signals can not accurately measure the angle of arrival (English: angle ofarrival, AOA). Thus radio frequency channel calibration requirements. [0004] Currently, radio frequency channel during calibration is usually calibrated using the signal generator and a radio frequency channel spectrum analyzer, and other speci...
Claims
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IPC IPC(8): H04B17/12H04B17/14H04B7/0413
CPCH04B17/12H04B17/14H04B7/0413H01Q3/267H04B17/11H04B17/21G01S11/02H04W72/0453H04W72/51
Inventor 阮卫李倩汪明月谈弘毅赵兮
Owner HUAWEI TECH CO LTD