The South China University of Technology

Wenquan Che

Quan Xue

Wanchen Yang

Shaowei Liao

Yongzheng Li

Jing Huang

Yue Li

Yingqi Zhang

Lizheng Gu

Siyu Li

Qiaguang Liu

Disclosed is a wired cooperative multiple input multiple output (CMIMO) signal transmission method based on a multimode transmission line. The method includes the following step: selecting a type of the multimode transmission line; constructing a wired CMIMO transmission system based on the multimode transmission line; performing channel measurement to obtain a transmission coefficient matrix; judging whether the transmission coefficient matrix satisfies a full rank and reversibility and has a condition number satisfying conditions; optimizing a structure of the multimode transmission line, a multiport excitation structure, and a multiport receiving structure to obtain the transmission coefficient matrix which satisfies a full rank and reversibility and has a condition number satisfying conditions; making the transmission coefficient matrix be equivalent to a channel matrix of the wired CMIMO transmission system; and completing signal excitation, transmission and reception of the wired CMIMO transmission system based on the multimode transmission line.

Wired cooperative multiple input multiple output (CMIMO) signal transmission method based on the multimode transmission line

Disclosed in the present invention are a multi-frequency base station antenna unit and a communication device, which belong to the technical field of antennas. The multi-frequency base station antenna unit comprises a first radiator and a second radiator, wherein the first radiator comprises a first radiation structure, which has at least one operating frequency band, and a coupling resonance structure, a first extra operating frequency band can be generated by loading the coupling resonance structure on the first radiation structure, and the second radiator is located above the first radiator and is configured to generate a second extra operating frequency band. The present invention solves the problems in respect of multi-frequency compatibility in current base station antennas wherein there are few frequency bands and strong coupling between the frequency bands.

Multi-frequency base station antenna unit and communication device

Disclosed in the present disclosure are a dual-polarized broadband millimeter-wave filtering antenna based on a meta-surface, and a communication device. The dual-polarized broadband millimeter-wave filtering antenna based on a meta-surface comprises two layers of dielectric substrates, which are arranged in a stacked manner, wherein an upper surface and a lower surface of a lower-layer dielectric substrate are respectively provided with an upper-layer metal ground and a lower-layer metal ground, an upper surface of an upper-layer dielectric substrate is provided with a meta-surface structure, the meta-surface structure comprises N metal patches, which are arranged in an array, a slot is etched on each metal patch, the upper-layer dielectric substrate is connected to the upper-layer metal ground, and a Jerusalem cross slot is etched on the upper-layer metal ground. The antenna has a simple structure, and radiation and filtering can be realized at the same time without increasing the size of the antenna, thereby greatly reducing the volume of a radio-frequency front end and without any extra insertion loss.

Dual-polarized broadband millimeter-wave filtering antenna based on meta-surface, and communication device

A low-profile circularly polarized isoflux antenna module is provided, which relates to the field of microelectronic antennas, and provides a solution to solve the contradiction between size and gain in conventional technology. The antenna module includes an antenna array, a substrate, a connection plate, and a feeding plate that are stacked in sequence. The feeding network on the feeding plate is electrically connected to the antenna array through probe passing through the connection plate and the substrate. The antenna array includes two or more concentrically distributed antenna elements, and each antenna element forms mutually independent concentric circularly polarized apertures through feed control. The structure is simple to assemble and easy to process, light in weight, small in size, and low in profile.

Low-profile circularly polarized isoflux antenna module

A coupling-offset path branch and a high-isolation millimeter-wave phased array antenna based on the same. The high-isolation millimeter-wave phased array antenna includes a plurality of radiating stacked microstrip patch elements, a shielding metal wall, several coupling-offset path branches, a metal ground plane, a feeding network layer, several ports, wherein the first port is excited, energy of the feeding network layer is coupled to a corresponding radiating stacked microstrip patch element through an I-shaped slot, and the energy is transmitted to the second port adjacent to the first port through an inherent coupling path portion; the coupling-offset path branch is introduced to offset the inherent coupling, thus achieving a high-isolation performance between the first port and the second port. By adopting the simple decoupling branch, the invention can achieve a high-isolation effect in a wide band, improve an active standing-wave ratio and a scanning capability of the array antenna.

Coupling-offset path branch and high-isolation millimeter-wave phased array antenna based on the same

The present invention discloses a dual-polarized wide-stopband filtering antenna and a communications device, the antenna comprising a dielectric substrate, a metal ground plate, a metal radiating patch, metal feeding arms, a metal square ring stub, metal transverse stubs, and metal probes, wherein the dielectric substrate is a rectangular cavity structure, the metal ground plate is disposed on the bottom surface of the dielectric substrate, and the metal radiating patch is disposed in the middle of the top surface of the dielectric substrate; the metal transverse stubs and the metal square ring stub are located inside the rectangular cavity and are connected on the same layer; the metal feeding arms are located between the metal square ring stub and the metal radiating patch; one end of the metal probe and a circular hole disposed on the metal ground plate form a coaxial feeding structure, and the other end of the metal probe is linked with the midpoint of the metal transverse stub and it is simultaneously connected to one end of the metal feeding arm to form a dual-polarized differential feeding structure; and the metal probes are connected to the metal transverse stubs. The antenna has a simple structure, can greatly reduce the volume of a radio frequency front end, and has no additional insertion loss.

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Guangzhou, China

Wenquan Che