CN-115699455-B - Antenna array, wireless communication device and communication terminal

Abstract

The application provides an antenna array, a wireless communication device and a communication terminal. The antenna array includes a plurality of antenna subarrays. The antenna array comprises a plurality of antenna subarrays, wherein the antenna subarrays are arranged in a single row, the radiation surfaces of the antenna subarrays at two ends are mutually perpendicular, and the included angle between the radiation surfaces of two adjacent antenna subarrays is larger than ninety degrees along the arrangement direction of the plurality of antenna subarrays. The signal processing module can be connected with at least two adjacent antenna subarrays in the antenna array through the selection switch. Alternatively, the signal processing module may be connected to one of the antenna sub-arrays via the selection switch. The included angle between the adjacent antenna subarrays is larger than ninety degrees, so that larger gain can be obtained between the two adjacent antenna subarrays when the antenna subarrays work.

Inventors

• XU JIANKUANG
• ZHANG GUANGZHI
• WANG LIQIAN

Assignees

• 华为技术有限公司

Dates

Publication Date

20260508

Application Date

20210527

Claims (7)

1. 1. A wireless communication device is characterized by comprising a signal processing module, a selection switch and an antenna array, wherein, The antenna array comprises a plurality of antenna subarrays, wherein the plurality of antenna subarrays are arranged in a single row, the radiation surfaces of the antenna subarrays positioned at two ends of the plurality of antenna subarrays are mutually perpendicular and are opposite to each other, and the included angle between the radiation surfaces of any two adjacent antenna subarrays in the plurality of antenna subarrays is larger than ninety degrees; The signal processing module is connected with one antenna subarray in the antenna array through the selection switch, or is connected with at least two adjacent antenna subarrays in the antenna array through the selection switch; the signal processing module comprises at least two millimeter wave chips; each antenna unit comprises a first polarized direction oscillator and a second polarized direction oscillator; Each millimeter wave chip is provided with a first radio frequency channel for transmitting signals in a first polarization direction and a second radio frequency channel for transmitting signals in a second polarization direction; The selection switch comprises a first selection switch and a second selection switch; each first radio frequency channel is connected with first polarization direction vibrators of a plurality of antenna units in the corresponding antenna subarrays through the first selection switch; each second radio frequency channel is connected with the second polarization direction vibrators of the plurality of antenna units of the corresponding antenna subarrays through the second selection switch.
2. 2. The wireless communication device of claim 1, wherein the included angles between the radiating surfaces of any two adjacent antenna subarrays of the plurality of antenna subarrays are equal.
3. 3. The wireless communication device of claim 2, wherein the angle between the radiating surfaces of any two adjacent antenna subarrays is 180 ° -90/(N-1) °, where N is the number of antenna subarrays.
4. 4. The wireless communication device of claim 1 or 2, Each antenna subarray of the plurality of antenna subarrays comprises a plurality of antenna units, the plurality of antenna units are at least arranged in a row, and the arrangement direction of each row of antenna units is perpendicular to the arrangement direction of the plurality of antenna subarrays.
5. 5. The wireless communication device of claim 1, wherein the signal processing module comprises a radio frequency intermediate frequency chip connected to the at least two millimeter wave chips.
6. 6. The wireless communication device as claimed in any one of claims 1 to 5, wherein the signal processing module is further configured to compare performances of antenna units in the plurality of antenna subarrays, determine two adjacent antenna subarrays with best performances among the plurality of antenna subarrays, and control the selection switch to select the two adjacent antenna subarrays with best performances.
7. 7. A communication terminal comprising the wireless communication device according to any one of claims 1 to 6.

Description

Antenna array, wireless communication device and communication terminal Technical Field The present application relates to the field of communications technologies, and in particular, to an antenna array, a wireless communication device, and a communication terminal. Background With the promotion of communication protocols, terminal communication needs to support 2G, 3G, 4G and 5G, the supported specifications are also higher and higher, for example, 4G CA (Carrier Aggregation, carrier aggregation, LTE or NR combines multiple frequency bands into a large bandwidth transmission), 5G sa (Standalone, 5G NR independent networking), 5G NSA (Non-Standalone, 5G dependent networking, nr+lte dual-connection networking) and other different specifications, the number of frequency bands of the supported 3GPP protocol is increased, and for more frequency bands supported by flagship terminals, not only all domestic frequency bands but also roaming to foreign frequency bands need to be supported, so that correspondingly, the hardware circuit resources of the radio frequency front end of the terminal are increased. According to the requirements of 3GPP protocol, 5G NR-FR2 (frequency range 2) adopts millimeter wave frequency band, which has the advantages of large bandwidth and high transmission rate, but also has the disadvantages of large space attenuation and short propagation distance. The function and efficiency of the traditional antenna can not meet the requirement of a 5G millimeter wave system, in order to make up the defects, a phased array architecture is adopted in the millimeter wave frequency band, namely an antenna array is formed by a plurality of antennas and radio frequency channels, so that higher antenna synthesis gain is obtained, and the synthesized wave beam is scanned in space according to a certain rule by controlling the phase of each antenna. Disclosure of Invention The application provides an antenna array, a wireless communication device and a communication terminal, which are used for improving the communication effect of the wireless communication device. In a first aspect, an antenna array for use in a mobile terminal is provided, the antenna array comprising a plurality of antenna sub-arrays. The antenna subarrays are arranged in a single row, the radiation surfaces of the antenna subarrays at two ends are mutually perpendicular, and an included angle between the radiation surfaces of two adjacent antenna subarrays is larger than ninety degrees along the arrangement direction of the antenna subarrays. In the technical scheme, the included angle between the adjacent antenna subarrays is larger than ninety degrees, so that larger gain can be obtained between the two adjacent antenna subarrays when the antenna subarrays work. In a specific embodiment, the included angles between the radiation surfaces of any two adjacent antenna subarrays in the plurality of antenna subarrays are equal. In a specific implementation, the included angle between the radiation surfaces of any two adjacent antenna subarrays is 180-90/(N-1) °, where N is the number of the antenna subarrays. In a specific implementation manner, each antenna subarray comprises a plurality of antenna units, the plurality of antenna units are at least arranged in a row, and the arrangement direction of each row of antenna units is perpendicular to the arrangement direction of the plurality of antenna subarrays. Illustratively, each antenna subarray includes a row of antenna elements. In a specific embodiment, each antenna element is a dual polarized antenna or a single polarized antenna. Different communication effects can be achieved. In a second aspect, a wireless communication device is provided, and the wireless communication device comprises a signal processing module, a selection switch and any one of the antenna arrays, wherein the signal processing module is connected with at least two adjacent antenna subarrays in the antenna array through the selection switch, or the signal processing module is connected with one antenna subarray in the antenna array through the selection switch. In the technical scheme, the included angle between the adjacent antenna subarrays is larger than ninety degrees, so that larger gain can be obtained between the two adjacent antenna subarrays when the antenna subarrays work, and in addition, the antenna subarrays positioned at the two ends of the plurality of antenna subarrays are mutually perpendicular, so that a coverage area of 180 degrees is realized, and the communication effect of the antenna array is improved. In a specific implementation manner, the signal processing module comprises a radio frequency intermediate frequency chip and at least two millimeter wave chips connected with the radio frequency intermediate frequency chip, wherein the at least two millimeter wave chips are correspondingly connected with the at least two adjacent antenna subarrays through the selection switch. And the mi