Abstract: In this letter, a circularly polarized (CP) massive multiple-input–multiple-output (MIMO) antenna with wide impedance/axial ratio (AR) bandwidths and reduced size is proposed. The antenna ...

Abstract: This letter presents a circularly polarized (CP) antenna based on cross-helix with a wide 3 dB axial ratio (AR) coverage. First, a twin-helix is utilized to attain a symmetrically ...

State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Frontiers Science Center for New Organic Matter, Nankai University, Tianjin 300071, China ...

Global Navigation Satellite Systems (GNSS), including GPS, GLONASS, Galileo, and BeiDou, have become indispensable for a wide range of applications such as navigation, surveying, and timing ...

ABSTRACT: A dual-band circularly polarized antenna, for applications of a global navigation satellite system (GNSS), is designed. The proposed antenna can generate two frequency bands, covering L1 ...

Can you chip in? The Internet Archive is introducing peer-to-peer (P2P) fundraising —a giving platform that allows individual supporters to host personalized campaigns to fundraise for the Internet ...

Laboratory of Advanced Optoelectronic Materials, Suzhou Key Laboratory of Novel Semiconductor-Optoelectronics Materials and Devices, State and Local Joint Engineering Laboratory for Novel Functional ...

Vortex Studio Mac delivers high-fidelity physics simulation for engineers and designers. This powerful macOS tool enables real-time 3D simulation. Vortex Studio for Mac is a professional engineering ...