Impact of the Gate Width of Al0.27Ga0.73N/AlN/Al0.04Ga0.96N/GaN HEMT on Its Characteristics by Liwei Jin, Zhiqun Cheng, Qingna Wang

Get full text

Accurate Modeling of GaN HEMTs Oriented to Analysis of Kink Effects in S₂₂ and h₂₁: An Effective Machine Learning Approach by Zegen Zhu, Gianni Bosi, Antonio Raffo, Giovanni Crupi, Jialin Cai

Get full text

Joint user grouping and antenna selection based massive MIMO beamforming by Qian WANG, Quan HUA, Yingchao ZHOU, Bin SHEN

“…In massive MIMO systems，when the number of users is larger as that of antennas at base station（BS），the various channels may be significantly different.A new zero-forcing beamformer design algorithm was proposed based on joint user grouping and antenna selection for massive MIMO dowlink systems.All users were divided into two groups and then the group of users with a better channel condition was selected to receive signal with selecting an optimal antenna combination for each transmit data stream，in order that RF circuit cost and power consumption could be reduced substantially with a little loss of performance in massive MIMO systems.The simulation results show that the proposed algorithm provides a better trade-off between rate performance and hardware complexity in massive MIMO system.…”
Get full text

A novel configuration of reconfigurable bandpass filter based on varactor diodes by Mohamed Guermal, Jamal Zbitou, Mostafa Hefnawi, Fouad Aytouna

“…To ensure the validity of the design, extensive simulations were conducted using the Advanced Design System ADS solver, a reliable tool for RF circuit analysis. The simulation results confirmed the effective performance of the filter, demonstrating not only its strong filtering capabilities but also the smooth reconfigurability achieved through the integration of the varactor diodes. …”
Get full text

Field measurement of atmospheric CO₂ column abundance based on portable laser heterodyne radiometer by Yong Wang, Yong Wang, Maolei Zhang, Maolei Zhang, Jiapeng Wang, Jiapeng Wang, Gang Wang, Gang Wang, Ruyue Cui, Ruyue Cui, Lei Dong, Lei Dong, Hongpeng Wu, Hongpeng Wu

“…To enhance performance, the radio frequency (RF) circuit system of the radiometer was thoroughly optimized, including adjustments to the filter bandwidth and the integration time of the lock-in amplifier. …”
Get full text

An AMC Backed Folded Dipole Slot Antenna Based on CMOS Process by Guo Qing Luo, Lin Qi Wu, Xiao Hong Zhang

Get full text

A High-Efficiency Compact Planar Antenna for ISM Wireless Systems by Tao Zhou, Yazi Cao, Zhiqun Cheng, Martine Le Berre, Francis Calmon

Get full text

Implementation of Low-Cost UHF RFID Reader Front-Ends with Carrier Leakage Suppression Circuit by Bin You, Bo Yang, Xuan Wen, Liangyu Qu

Get full text

A Printed LPDA Antenna Fed by a Microstrip Line to Double Sided Parallel Strip Line from Backside by Zhou Yang, Huang Jingjian, Wu Weiwei, Yuan Naichang

“…Using this feeding technique makes the printed LPDA antenna easier to be integrated into radio frequency (RF) circuits. In this paper, four layers are used to construct the antenna. …”
Get full text

Modeling of Inscribed Dual Band Circular Fractal Antenna for Wi‐Fi Application Using Descartes Circle Theorem by SatheeshKumar Palanisamy, Anitha R. Vaddinuri, Arfat Ahmad Khan, Muhammad Faheem

“…Incorporation with Circuits and Systems: Ongoing efforts are directed at seamlessly integrating these antennas with RF circuits and communication systems to enhance their practical utility and applicability. …”
Get full text