Yujun Yan
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
Yujun Yan has a total of 6 co-authors. Here are the top co-authors by number of shared publications:
Feng Lin
School of Integrated Circuits and Electronics, Beijing Institute of Technology, Beijing, China
1 shared publicationHongqi Tao
55th Research Institute of CETC, Nanjing, China
1 shared publication- Houjun Sun
Beijing Institute of Technology
1 shared publication - Kaiqiang Zhu
School of Integrated Circuits and Electronics, Beijing Institute of Technology, Beijing, China
1 shared publication Weibo Wang
55th Research Institute of CETC, Nanjing, China
1 shared publication- Yu Xiao
School of Electronics and Communication Engineering, Sun Yat-sen University, Shenzhen, China
1 shared publication
Latest Publications
- 11 November 2025
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Microwave and Wireless Technology Letters
- Vol. 36 (3) , 467-470
A Wideband GaAs Phase-Reconfigurable Reflector for K-Band Reflectarray Antenna
This letter presents a wideband phase-reconfigurable reflector (PRR) for a reconfigurable reflectarray antenna (RRA) in K-band, which is implemented in a 0.15- $\mu $ m GaAs pHEMT process. The proposed PRR consists of a series resonant network and a series-parallel resonant network, which are composed of three pHEMT switches, inductors, and capacitors. By using 0/−5-V voltage to control the on/off of three pHEMT switches separately, different circuit states can be formed. Constructing mappings between different circuit states and the required phase shifts can achieve a phase shift of 0°–360° in 90° steps while effectively reducing reflection losses (RLs) and improving bandwidth. The experimental results show that in the 20–27-GHz bandwidth, with phase shift errors (PEs) of each phase shift state less than ±15°, the RLs of all states are less than 2.35 dB, and the percentage bandwidth can reach 30%. To the best of our knowledge, this PRR achieves the maximum bandwidth among the published 90° step PRR.
- 11 November 2025
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Microwave and Wireless Technology Letters
- Vol. 36 (3) , 467-470
A Wideband GaAs Phase-Reconfigurable Reflector for K-Band Reflectarray Antenna
This letter presents a wideband phase-reconfigurable reflector (PRR) for a reconfigurable reflectarray antenna (RRA) in K-band, which is implemented in a 0.15- $\mu $ m GaAs pHEMT process. The proposed PRR consists of a series resonant network and a series-parallel resonant network, which are composed of three pHEMT switches, inductors, and capacitors. By using 0/−5-V voltage to control the on/off of three pHEMT switches separately, different circuit states can be formed. Constructing mappings between different circuit states and the required phase shifts can achieve a phase shift of 0°–360° in 90° steps while effectively reducing reflection losses (RLs) and improving bandwidth. The experimental results show that in the 20–27-GHz bandwidth, with phase shift errors (PEs) of each phase shift state less than ±15°, the RLs of all states are less than 2.35 dB, and the percentage bandwidth can reach 30%. To the best of our knowledge, this PRR achieves the maximum bandwidth among the published 90° step PRR.