公开(公告)号：US11943080B2

公开(公告)日：2024-03-26

申请号：US17611179

申请日：2021-03-17

Applicant: Southeast University

Inventor： Haiming Wang ,  Bensheng Yang ,  Peize Zhang ,  Chen Yu ,  Wei Hong

IPC: H04L12/50 ,  H04L25/02

CPC classification number: H04L25/0204

Abstract: Disclosed is a method for estimating dense multipath parameters by means of multipolarized broadband extended array responses, which includes: first transmitting multiple different transmitted signal sequences via a multipolarized antenna array, and processing received data in multiple snapshots according to the known transmitted signals, to obtain channel responses of multipolarized antenna components at all frequency points in a frequency band; extending the obtained channel response matrixes of multiple frequency points in multiple snapshots into a large two-dimensional channel response matrix; then, acquiring a delay parameter regarding multipath propagation by using a reference array element, and estimating two-dimensional departure and arrival angles by using a channel matrix subjected to frequency domain smoothing and dimensionality reduction; and afterwards, pairing the estimated departure and arrival angles, and estimating parameters such as the cross-polarization ratios, the initial phases, and the amplitudes of the sub-paths by using the estimated parameters.

公开(公告)号：US11824267B2

公开(公告)日：2023-11-21

申请号：US17605005

申请日：2021-01-12

Applicant: SOUTHEAST UNIVERSITY ,  PURPLE MOUNTAIN LABORATORIES

Inventor： Zhihao Jiang ,  Ke Zhang ,  Wei Hong

IPC: H01Q21/06 ,  H01Q21/24 ,  H01Q1/36 ,  H01Q9/04 ,  H01Q19/00 ,  H01Q21/00 ,  H01Q21/30

CPC classification number: H01Q21/24 ,  H01Q1/36 ,  H01Q9/0421 ,  H01Q9/0464 ,  H01Q19/005 ,  H01Q21/0037 ,  H01Q21/065 ,  H01Q21/30

Abstract: A compact dual-band triple-polarized antenna based on shielded mushroom structures includes a vertically-polarized radiator and a horizontally-polarized radiator. Two parts are fixedly connected in a disc-shaped structure. The vertically-polarized radiator and the horizontally-polarized radiator are both multilayer structures. Each multilayer structure includes a plurality of concentric circles, and the plurality of concentric circles include a plurality of dielectric substrates. The vertically-polarized radiator and horizontally-polarized radiator each include a plurality of shielded mushroom cell structures. Each shielded mushroom cell structure includes at least three metal layers and a metallic shorting pin, and the metallic shorting pin connects at least two of the at least three metal layers. By controlling dispersion properties of the each shielded mushroom cell structure, a multi-frequency pattern diversity device possessing both vertical polarization and dual horizontal polarization radiation characteristics in two pre-defined frequencies is designed.

公开(公告)号：US11611404B2

公开(公告)日：2023-03-21

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: H04B17/00 ,  H04B17/391

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：US11069965B2

公开(公告)日：2021-07-20

申请号：US16626541

申请日：2018-01-31

Applicant: SOUTHEAST UNIVERSITY

Inventor： Haiming Wang ,  Qi Wu ,  Jiexi Yin ,  Chen Yu ,  Wei Hong

IPC: H01Q1/38 ,  H01Q1/48 ,  H01Q1/50 ,  H01Q21/24

Abstract: A low-profile broadband circularly-polarized array antenna based on stacked traveling wave antenna elements, includes: a circularly-polarized antenna element composed of three segments connected in an end-to-end manner of metal layers printed on two sides of a dielectric slab and a metallized via connecting two layers; a 2×2 antenna sub-array composed of a metallized via cavity and four antenna elements; a 16-way full-parallel feeding network composed of the metallized vias; slots for coupled feeding between feeding layers and metal cavities and the antenna; and a switching structure for testing between a grounded coplanar waveguide (GCPW) and a substrate integrated waveguide (SIW). An antenna array designed can be manufactured by using a printed circuit board process. The antenna array can realize circularly polarized radiation in a very broad frequency band.

公开(公告)号：US12074375B2

公开(公告)日：2024-08-27

申请号：US17775896

申请日：2021-02-08

Applicant: SOUTHEAST UNIVERSITY ,  PURPLE MOUNTAIN LABORATORIES

Inventor： Zhihao Jiang ,  Wei Hong

IPC: H01Q21/24 ,  H01Q9/04 ,  H01Q19/06

CPC classification number: H01Q21/24 ,  H01Q9/0414 ,  H01Q19/06

Abstract: The present invention discloses a millimeter-wave dual circularly polarized lens antenna and electronic equipment. The antenna includes a broadband circularly polarized planar feed source array and a dual circularly polarized planar lens. In the planar feed source array, a double-layer stacked patch is used at the same time to achieve broadband circular polarization, and a sequentially rotating feed structure is used to further expand the bandwidth. In the planar lens, a miniaturized stacked patch and a microstrip true-time-delayed phase-shifting structure are used to obtain the independent regulation and control of the left-handed and right-handed circularly polarized wave transmissive phases in a relatively wide frequency band. The lens antenna of the present invention achieves dual circularly polarized highly directional beam, and independently control the beam pointing of the left-handed circularly polarized wave and right-handed circularly polarized wave, and achieve the transmissive dual circularly polarized beam shaping.