Shan Zhao
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
Shan Zhao has a total of 8 co-authors. Here are the top co-authors by number of shared publications:
- Zengrui Li
School of Information and Communication Engineering, Communication University of China, Beijing 100024, China
2 shared publications - Hongcheng Yin
The Science and Technology on Electromagnetic Scattering Laboratory, China Aerospace Science and Technology Corporation, Beijing 100854, China
1 shared publication - Hou Shu
School of New Media, Beijing Institute of Graphic Communication, Beijing 102600, China
1 shared publication - Hui Zhang
The State Key Laboratory of Media Convergence and Communication, School of Information and Communication Engineering, Communication University of China, Beijing 100024 China
1 shared publication - Kainan Qi
Science and Technology on Electromagnetic Scattering Laboratory, Second Institute of China Aerospace Science and Technology Corporation, Beijing, China
1 shared publication - Qingqi He
School of Electronic Engineering, Guangxi University of Science and Liuzhou 545006, China
1 shared publication
Latest Publications
- Open Access
- 15 November 2023
- Published by River Publishers in Applied Computational Electromagnetics Society Journal (ACES)
- Vol. 38 (6) , 409–415
Flat-topped Beams using Phase Compensation based on Low-profile Transmitarray
This paper proposes a method to add an additional phase compensation to conventional phased arrays to achieve flat-topped beam forming, which can convert the spherical waves emitted by common conical horn antennas into cylindrical flat-topped beams, at the same time, there is also a certain power enhancement. A centrosymmetric unit composed of four layers of F4B and metal patches is designed. By changing the value of the parameters, a 360∘ phase change can be achieved, and it has the advantages of small size and low-profile. To validate the design concept, a prototype of the transmitarray (TA) was designed, fabricated, and measured by calculating the phase distribution of the front. The measurement results show that the designed TA can achieve flat-topped beams at 5.2GHz, the maximum gain is 1.15dB higher than that of the horn antenna, and the flat-topped range is about ±10∘. The results are in good agreement with the simulation within the test range.
- 15 November 2023
- Published by River Publishers in Applied Computational Electromagnetics Society Journal (ACES)
- Vol. 38 (6) , 409–415
Open AccessFlat-topped Beams using Phase Compensation based on Low-profile Transmitarray
This paper proposes a method to add an additional phase compensation to conventional phased arrays to achieve flat-topped beam forming, which can convert the spherical waves emitted by common conical horn antennas into cylindrical flat-topped beams, at the same time, there is also a certain power enhancement. A centrosymmetric unit composed of four layers of F4B and metal patches is designed. By changing the value of the parameters, a 360∘ phase change can be achieved, and it has the advantages of small size and low-profile. To validate the design concept, a prototype of the transmitarray (TA) was designed, fabricated, and measured by calculating the phase distribution of the front. The measurement results show that the designed TA can achieve flat-topped beams at 5.2GHz, the maximum gain is 1.15dB higher than that of the horn antenna, and the flat-topped range is about ±10∘. The results are in good agreement with the simulation within the test range.
- Open Access
Ultra-Broadband Absorber with Large Angular Stability Based on Frequency Selective Surface
In this paper, a low-profile, double-layer absorber with ultra-broadband absorption and large-angle stability is proposed. In order to improve the angular stability, the square ring with concave–convex deformation is designed. It can expand the current path to realize the miniaturization of the absorber, which decreases the influence of oblique incident on absorption. The equivalent circuit model provides detailed resonance and admittance analysis, showing the existence of three resonances working together to achieve broadband absorption. The simulated results illustrate that the designed unit can achieve above 80% absorption within 2.09–18.1 GHz. The angular stability is up to 50° under TE/TM polarization with a period of 0.07 λL (the wavelength of the lowest operating frequency). The 300 mm × 300 mm prototype absorbers were fabricated for demonstration, with a total thickness of 0.096 λL. The measurement results are consistent with the simulated results, which shows that the designed absorber unit can achieve ultra-broadband and large-angle absorption. The performance of devices can be widely applied in infrared detection, radiation refrigeration, and stealth technology.
Open AccessUltra-Broadband Absorber with Large Angular Stability Based on Frequency Selective Surface
In this paper, a low-profile, double-layer absorber with ultra-broadband absorption and large-angle stability is proposed. In order to improve the angular stability, the square ring with concave–convex deformation is designed. It can expand the current path to realize the miniaturization of the absorber, which decreases the influence of oblique incident on absorption. The equivalent circuit model provides detailed resonance and admittance analysis, showing the existence of three resonances working together to achieve broadband absorption. The simulated results illustrate that the designed unit can achieve above 80% absorption within 2.09–18.1 GHz. The angular stability is up to 50° under TE/TM polarization with a period of 0.07 λL (the wavelength of the lowest operating frequency). The 300 mm × 300 mm prototype absorbers were fabricated for demonstration, with a total thickness of 0.096 λL. The measurement results are consistent with the simulated results, which shows that the designed absorber unit can achieve ultra-broadband and large-angle absorption. The performance of devices can be widely applied in infrared detection, radiation refrigeration, and stealth technology.