Broadband Circularly Polarized Microstrip Antenna Array Using Sequentially Rotated Technique 英文原文及中文翻译

Broadband Circularly Polarized Slot Antenna Array 英文论文原文及中文翻译

Circularly Polarized Antennas 圆极化天线英文版，作者: Steven (Shichang) Gao, Qi Luo and Fuguo Zhu

A novel antipodal Vivaldi antenna with tapering serrated structure at the edges is proposed. Compared with traditional Vivaldi antennas without serrated structure, the gain of the designed antenna is significantly improved in the desired frequency band (4.5- 7.5 GHz). In addition, a 2 x 2 Vivaldi antenna array with an orthorhombic structure is designed and fabricated to achieve a circular polarization (CP) characteristic. With this configuration, the 3 dB axial ratio bandwidth of the array reach

In this Letter, we focus on the theoretical analysis of the relativistic energy and angular distributions of the ejected photoelectrons during the relativistic tunnel ionization of atoms by intense, circularly polarized light. We make a small modification of the general analytical expressions for these distributions. The role of the initial momentum, the ponderomotive potential, and the Stark shift are considered. We also present the maximal angle of electron emission.

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