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Design of a Spaceborne Earth-Coverage Scanning Phased Array Antenna Based on Mirror Beamforming Networks for MEO Satellite Communications
Muren Cai;Siyi Du;Xiaowei Shi;Wentao Li;Heng Liu;Qiaoshan Zhang;Yan Li;Chunbang Wu
2024 International Conference on Ubiquitous Communication (Ucom)
Year: 2024 | Conference Paper |
This paper proposes a spaceborne Earth-coverage scanning phased array (ECSPA) antenna based on shared subarray architecture for medium Earth orbit (MEO) satellite communications. A couple of mirror beamforming networks are utilized for shared subarray to obtain the Earth-coverage beam of MEO satellites in two symmetrical sections by mirror imaging, effectively reducing the optimization difficulty....Show More
Research on Shielding Effectiveness of UAV Based on Neural Network
2024 IEEE International Workshop on Radio Frequency and Antenna Technologies (iWRF&AT)
Year: 2024 | Conference Paper |
As an aerial robot, unmanned aerial vehicle (UAV) can be widely used in many military and civilian aspects such as image transmission, remote sensing measurement, reconnaissance and surveillance. This paper analyzes the internal electric field coupling effect of UAV in different frequency bands, and calculates the electromagnetic shielding effectiveness of UAV from the perspective of electromagnet...Show More
Efficient Two-Stage Beampattern Synthesis Against Interference for Sparse Linear Array Design
In this letter, an efficient two-stage adaptive beamforming algorithm is proposed for sparse linear array synthesis. In the first stage, the unitary matrix pencil method is employed to synthesize a sparse linear array to generate a pattern with a low sidelobe level (SLL). Next, by serving the results obtained previously as a constraint, an adaptive beamforming method is implemented to enhance the ...Show More
ANN-Assisted Quasi-Time-Invariant Beamforming for Retrodirective Frequency Diverse Array
Yong Qiang Hei;Xiao Yan Ju;Long Yuan Ma;Wen Tao Li;Xiao Wei Shi
Due to the range-angle-dependent beampattern, frequency diverse array (FDA) has attracted extensive attention. However, the inherent time-varying and range-angle coupling problems of the FDA are still troublesome. In this article, a quasi-time-invariant focusing beamforming scheme for retrodirective (RD)-FDA is proposed to alleviate the above tough problems. Specifically, linear and semicircular R...Show More
Design and Simulations of a Novel Ka-Band Isoflux Scanning Phased Array Antenna for GEO Satellites
Muren Cai;Wentao Li;Xiaowei Shi;Qiaoshan Zhang;Heng Liu;Yan Li;Jixiang Wan;Steven Gao
In this letter, we propose a novel spaceborne isoflux scanning phased array (ISPA) antenna at Ka-band for geostationary Earth orbit satellite communications. The ISPA can adaptively compensate for space loss variation during beam scanning. An innovative method for achieving the isoflux scanning characteristics of ISPA by using shared subarrays with an isoflux beam as equivalent elements has been p...Show More
Design and Implementation of A Miniature Millimeter Wave Radar System for Multiple Applications
Xiaofeng Li;Xinhuai Wang;Pengcheng Zhou;Xin Cui;Yin Xu;Xiaowei Shi
2023 International Conference on Microwave and Millimeter Wave Technology (ICMMT)
Year: 2023 | Conference Paper |
In this paper, a 77GHz linear frequency modulated continuous wave (FMCW) miniature millimeter wave radar system is designed and implemented based on the millimeter wave radar sensor chip AWR1843AOP from Texas Instruments (TI). The total power consumption of this radar system is about 1W, and the overall size of the system is 30mm*58mm, which has the advantages of low power consumption, small size ...Show More
A Dual Polarized Vivaldi Antenna Loaded with Dielectric Lens
2023 International Conference on Microwave and Millimeter Wave Technology (ICMMT)
Year: 2023 | Conference Paper |
A dual polarized Vivaldi antenna loaded with dielectric lens is proposed, which consists of a dual-slot Vivaldi antenna and a dielectric lens. Based on the study of dielectric lens, an elliptical lens containing two media is designed, which is loaded on the upper end of Vivaldi antenna. The lens converts the spherical wave into quasi-plane wave, thus increasing the antenna gain. Compared with the ...Show More
A Compact and High-Gain Serpentine Line Antenna
2023 International Conference on Microwave and Millimeter Wave Technology (ICMMT)
Year: 2023 | Conference Paper |
With low latency and round-the-clock operation, millimeter wave(mmW) radar have attracted great attention. However, the requirements of miniaturization, high gain, and specific orientation cannot be realized with a single conventional mmW antenna. To tackle the problem above, a compact and high-gain serpentine antenna array is proposed in this paper. The radiation efficiency is first improved by d...Show More
Shaped Power Pattern Synthesis of Linear Sparse Arrays with A Novel Hybrid Method
2023 International Conference on Microwave and Millimeter Wave Technology (ICMMT)
Year: 2023 | Conference Paper |
This paper proposes a hybrid algorithm for the synthesis of linear array with shaped beam and directivity gain constraints. The static and dynamic convex optimization(SADCP) is used to achieve a high performance on sidelobe level(SLL), null level, directivity gain and excitation control. In order to reduce the number of elements, matrix pencil method is used to get a sparse solution based on the r...Show More
Research on Anti-wideband Interference Performance of SFAP Algorithm
Yiming Wang;Xinhuai Wang;Xiaocheng Wang;Xin Cui;Yin Xv;Xiaowei Shi
2023 International Conference on Microwave and Millimeter Wave Technology (ICMMT)
Year: 2023 | Conference Paper |
In this paper, the principle and simulation of Space-Frequency Adaptive Processing algorithm are studied. And a comprehensive anti-interference performance verification experiment is designed to simulate the acquisition ability of satellite navigation signals under linear FM broadband interference and strong noise, and the effect of Space-Frequency Adaptive Processing algorithm is summarized. Expe...Show More
A novel four-polarization MIMO array with combined bridge
2023 International Conference on Microwave and Millimeter Wave Technology (ICMMT)
Year: 2023 | Conference Paper |
In this communication, a novel four-polarization MIMO array with combined bridge is proposed. The feed network of the MIMO array is composed of branch line coupler, Sheffman phase shifter, Wilkinson power divider, U-shaped branch and Π Type attenuator. By feeding different input ports, the antenna 0°/90°/±45°polarization can be achieved. Through simulation, the VSWR of antenna array is less than 1...Show More
K Band Transceiver Components
Jiangcan Zhu;Xinhuai Wang;Ye Peng;Yin Xu;Xiaowei Shi;Junjie Hu
2023 IEEE 6th International Conference on Electronic Information and Communication Technology (ICEICT)
Year: 2023 | Conference Paper |
The real-time nature of information is critical in modern information warfare. As the number of combat units gradually increases, it is necessary to establish a timely and reliable information sharing platform between each unit to complete the information sharing. Data chains enable rapid and reliable networking and sharing of information resources on the battlefield. In the networking system, eac...Show More
An Ultra-Wideband Oblique 45° Line Polarization Tightly Coupled Phased Array Antenna
2023 IEEE MTT-S International Wireless Symposium (IWS)
Year: 2023 | Conference Paper |
Cited by: Papers (1)
In this paper, an oblique 45° linear polarization close-coupled antenna unit operating from 2GHz to 18GHz is designed. The standing wave of the antenna unit in the working frequency band is less than 2.2, the tight coupling structure between the units effectively expands the antenna bandwidth, the middle consumable block film structure can effectively suppress the resonance point in the frequency ...Show More
Design of Cascaded Millimeter Wave Radar for Concealed Item Imaging
Xin Cui;Xinhuai Wang;Xikai Zhang;Yiming Wang;Xiaofeng Li;Yin Xu;Xiaowei Shi
2023 IEEE MTT-S International Wireless Symposium (IWS)
Year: 2023 | Conference Paper |
In this paper a 12-transmitter, 16-receiver cascaded millimeter-wave(mmWave) radar is designed for scenarios such as concealed item imaging and damage detection. The designed cascaded radar has 12 transmit antennas and 16 receive antennas, forming a virtual antenna array with 192 antenna elements. The cascaded radar is sampled in space by the movement of a two-axis motorized rail for two-dimension...Show More
Effective Artificial Neural Network Framework for Time-Modulated Arrays Synthesis
Yong Qiang Hei;Long Yuan Ma;Wen Tao Li;Jin Chao Mou;Xiao Wei Shi
The antenna array synthesis problem has long been known as a tough issue, which attracts considerable interest to explore high-performance low-complexity optimization techniques. In this article, an efficient artificial neural network (ANN) for time-modulated arrays (TMAs) synthesis is proposed. By defining the equivalent excitation properly, TMA synthesis can be first transformed to a generalized...Show More
Low-Profile Wideband Dual-Polarized Antenna for Millimeter-Wave Beam Steering Applications
Wen Tao Li;Wei Xing Cai;Jia Geng He;Yong Qiang Hei;Xiao Wei Shi
In this work, a dual-polarized endfire phased antenna array with a low-profile is proposed for millimeter-wave (mmW) beam steering application. The proposed antenna array is constructed by a $1\times5$ subarray with vertical polarization (V-pol) realized by novel SIW horn antenna and a $1\times4$ subarray with horizontal polarization (H-pol) realized by quasi-Yagi antenna. Characteristic mode ...Show More
A Simple Frequency- and Polarization-Reconfigurable Bent Monopole Antenna Based on Liquid Metal
In this letter, a frequency- and polarization-reconfigurable bent monopole antenna using liquid metal is proposed. The proposed antenna is designed to operate at continuously tunable frequencies and switch between left-handed circular polarization (LHCP) and right-handed circular polarization (RHCP) states. The frequency reconfigurability is achieved by controlling the length of the liquid metal t...Show More
Mixed-Mode Magic-Ts and Their Applications on the Designs of Dual-Band Balanced Out-of-Phase Filtering Power Dividers
In this article, two types of mixed-mode magic-Ts are proposed, which can realize out-of-/in-phase equal power divisions of multiple mixed modes ports with high isolation, common-mode (CM) rejection, and compact size. The first one, which has five ports, consists of a microstrip T-junction as a single-ended-to-single-ended (SETSE) in-phase power division network, and a microstrip/slotline transiti...Show More
Novel Unbalanced-to-Balanced Quad-Channel Diplexer With Controllable Bandwidth and High Isolation
Wen Tao Li;Hao Ran Zhang;Xue Jing Chai;Jin Chao Mou;Yong Qiang Hei;Xiao Wei Shi
A novel unbalanced-to-balanced (UBTB) quad- channel diplexer consisting of two balun filters sharing a common single-ended microstrip feeder is proposed. By loading a stepped-impedance quad-mode resonator (SIQMR) into the balun filter, not only each mode can be flexibly adjusted, but also the size of the circuit can be reduced. In addition, motivated by the internal hybrid coupling, two adjacent m...Show More
Sound Signal Detection Based on FMCW Milimeter Wave Radar
Hong Yang Xu;Xin Huai Wang;Yin Xu;Xiao Cheng Wang;Xin Li;Xiao Wei Shi
2022 International Conference on Microwave and Millimeter Wave Technology (ICMMT)
Year: 2022 | Conference Paper |
Cited by: Papers (1)
In this paper, FMCW millimeter wave radar sensor is used to detect the sound signal. The vibration of the surface of the sound source modulates the transmitted signal of the radar, which can recover the sound signal. Experiments have confirmed that the 77GHz millimeter wave radar can detect the tiny vibration of more than ten microns, avoid the mutual interference between multiple sound sources in...Show More
Research on Anti-wideband Interference Performance of Space - time Joint Algorithm of Beidou Receiver
Xiaocheng Wang;Xinhuai Wang;Pengcheng Zhou;Yin Xv;Xiaowei Shi
2022 International Conference on Microwave and Millimeter Wave Technology (ICMMT)
Year: 2022 | Conference Paper |
In this paper, the principle and simulation of space-time combined power inversion algorithm are studied, and a complete anti-interference performance verification process is built to test the acquisition ability of satellite navigation signals under linear frequency modulation broadband interference and strong noise, and evaluate the performance of the algorithm. Experiments show that the space-t...Show More
Design of Miniature Millimeter Wave Radar System Based on TI Integrated Chip
2022 International Conference on Microwave and Millimeter Wave Technology (ICMMT)
Year: 2022 | Conference Paper |
In this paper, a micro millimeter wave radar system based on TI integrated chip is designed and implemented. The system uses AWR1843 of TI company as the main chip, designs the peripheral circuit and antenna module, and realizes the miniaturization of radar system. The system can be widely used in automatic driving, uav obstacle avoidance, detection guidance and other fields.Show More
Bionic Snake-shaped Detection Robot Based on Millimeter Wave Radar
2022 International Conference on Microwave and Millimeter Wave Technology (ICMMT)
Year: 2022 | Conference Paper |
Cited by: Papers (1)
In this paper, a bionic snake robot based on 24GHz frequency modulated continuous wave (FMCW) radar is designed and implemented. The system adopts STM32F303 master control chip and BGT24MTR11 RF chip, and designs antenna module, RF transceiver system and snake-like mechanical structure. In addition, an algorithm was proposed to extract respiratory heartbeat data from small and resource-limited rad...Show More
Design of Vital Signs Detection System Based on 77GHz FMCW Radar
Pengcheng Zhou;Yin Xu;XinHuai Wang;Hongyang Xu;Xiaowei Shi;Xin Li
2022 International Conference on Microwave and Millimeter Wave Technology (ICMMT)
Year: 2022 | Conference Paper |
Cited by: Papers (3)
In this paper, a vital signs detection system based on 77GHz frequency modulated continuous wave (FMCW) radar is proposed and implemented. The peripheral radio frequency module and antenna array are designed on the basis of AWR1843 radar chip. A threshold discriminant method of target phase energy based on statistics is proposed to distinguish target and clutter signal in complex environment. EDAC...Show More
A Design of Millimeter-Wave Cavity Filter Based on Multiphysics Analysis
2022 International Conference on Microwave and Millimeter Wave Technology (ICMMT)
Year: 2022 | Conference Paper |
In this paper, in order to solve the problem of the performance degradation of millimeter wave cavity filters under extreme temperatures, this paper designs a fifth-order cavity filter with a center frequency of 25–27 GHz, and analyzes the environmental temperature caused by the copper millimeter wave cavity filter. Design a new structure that uses the inverse piezoelectric effect of piezoelectric...Show More
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