- 标题
- 摘要
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- 实验方案
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COMPACT ROTMAN LENS STRUCTURE CONFIGURATIONS TO SUPPORT MILLIMETER WAVE DEVICES
摘要： The development of modern communication devices for the latest technologies such as 5G has brought the millimeter wave technology into the spotlight because it offers higher data rates and bandwidth. Since highly directional transmissions are necessary for communication in these frequencies due to high path loss and atmospheric absorption, the use of adaptive antennas is inevitable. Rotman lenses have long been used as analog beam forming networks to support linear array antennas for electronic scanning. Their broad bandwidth and planar structure make them ideal for a variety of applications. However, their overall dimensions can be prohibitive especially for large scan angles. In this paper, we propose a few compact configurations that reduce the overall dimensions of Rotman lens as much as 50% without degrading its performance.
关键词： compact configurations,Rotman lens,millimeter wave,beam forming networks,electronic scanning
更新于2025-09-23 15:21:21
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[IEEE 2019 IEEE Asia-Pacific Microwave Conference (APMC) - Singapore, Singapore (2019.12.10-2019.12.13)] 2019 IEEE Asia-Pacific Microwave Conference (APMC) - Two-Dimensional Electronically Controlled Scanning Phased Array Antenna Based on Liquid Crystal Material
摘要： In this paper, a two-dimensional electronically controlled scanning phased array antenna based on liquid crystal material is introduced. The structure consists of a 2×2 microstrip patch antenna array, a continuously variable helical folded delay line phase shifter, a RF feed and a bias network. The suspended stripline power divider, ground coplanar waveguide-suspended stripline transition structure and broadband patch antenna are studied respectively. The Ka-band LC passive phased array is developed by cascading the above circuits. The simulation results show that by tuning the excitation phases of each unit, the two-dimensional phase scan of the array is realized, the scanning angle is greater than ±30°, and the -10dB bandwidth of the array is larger than that of 4GHz.
关键词： Phased array,electronic scanning,liquid crystal
更新于2025-09-23 15:19:57