公开(公告)号：US20220368439A1

公开(公告)日：2022-11-17

申请号：US17862051

申请日：2022-07-11

Applicant: SOUTHEAST UNIVERSITY

Inventor： Zhengbo JIANG ,  Zhanyuan WANG ,  Chong GUO ,  Wei HONG ,  Zhangcheng HAO

IPC: H04B17/391 ,  H04B17/00

Abstract: The present disclosure discloses a four-dimensional over the air performance test method for a dynamic scene channel. By constructing a time-domain non-stationary dynamic scene channel model, and selecting over the air (OTA) probes of appropriate number, positions and power weight in a four-dimensional multi-probe anechoic chamber (4D-MPAC) test system through a probe selection algorithm, finally a 4D-MPAC dynamic channel test system for a target channel in a DUT test area is constructed, which makes a contribution to solve the current problem of OTA performance test for a time-domain non-stationary channel. The present disclosure aims to provide a four-dimensional multi-probe anechoic chamber (4D-MPAC) for the dynamic scene channel, which can effectively and accurately reproduce a target dynamic scene channel model in an anechoic chamber on the basis of reducing the cost of the test system as much as possible by constructing the dynamic scene channel model, and provide an index for judging the accuracy of constructing the dynamic scene channel model.

公开(公告)号：US20220271435A1

公开(公告)日：2022-08-25

申请号：US17608695

申请日：2021-04-15

Applicant: SOUTHEAST UNIVERSITY

Inventor： Zhangcheng HAO ,  Yiwen WU

IPC: H01Q21/00 ,  H01Q21/06 ,  H01Q21/30

Abstract: A dual-band shared-aperture antenna array based on a dual-mode parallel waveguide is applicable to the field of wireless communications technologies. The dual-band shared-aperture antenna array includes: a waveguide-substrate integrated waveguide transition structure, a multi-stage cascaded power splitter, a transverse coupling slot, a longitudinal coupling slot, a matching through-hole, a shared-aperture dual-mode parallel waveguide, and a shared-aperture parallel slot array. The entire structure includes two dielectric substrates. A signal is input to the multi-stage cascaded power splitter through the waveguide-substrate integrated waveguide transition structure located on a bottom-layer substrate. The foregoing dual-band shared-aperture antenna array based on a dual-mode parallel waveguide can separately implement a low-band fixed-beam slot array antenna, a high-band multi-beam long slot leaky-wave antenna, or a fixed-beam slot array antenna. It has a simple structure, multiple functions, high integration, a small size and light weight.

公开(公告)号：US20210367354A1

公开(公告)日：2021-11-25

申请号：US17257271

申请日：2020-02-15

Applicant: SOUTHEAST UNIVERSITY

Inventor： Zhangcheng HAO ,  Yiwen WU

IPC: H01Q21/00 ,  H01Q13/10 ,  H01Q21/08

Abstract: A low-loss feeding network comprises a vertical switching structure, a substrate integrated waveguide (SIW), a 2N-way power divider, coupling slots, matching metal vias and parallel-plane waveguides, wherein the energy provided by a standard waveguide is coupled to the SIW through the vertical switching structure, and the energy outputted by the SIW is evenly split into 2N parts by the 2N-way power divider; the energy of each way outputted by the 2N-way power divider is coupled to parallel-plane waveguides through the coupling slots and the matching metal vias, and the electric field at the junction of two adjacent parallel-plane waveguides is zero, so that an ideal virtual electric wall is formed, thus the structure of the feeding network is simplified, and the metal loss at the junction is reduced; finally, the energy provided by the low-loss feeding network is radiated in phase through the symmetrical slot antenna array.