High gain antenna with wide angle radiation for modern wireless communication applications

2017 ◽  
Author(s):  
Bui Thi Duyen ◽  
Le Minh Thuy ◽  
Nguyen Quoc Cuong
Keyword(s):  
Wireless Communication ◽  
High Gain ◽  
Wide Angle ◽  
High Gain Antenna

scholarly journals Control and improvement of antenna gain by using multilayer non-uniform metasurfaces

2019 ◽  
Vol 6 ◽  
pp. 4 ◽  
Author(s):  
Jiaqi Han ◽  
Long Li ◽  
Tianliang Zhang ◽  
Rui Xi
Keyword(s):  
Phase Shift ◽  
Horn Antenna ◽  
High Gain ◽  
Wide Angle ◽  
Antenna Gain ◽  
Beam Control ◽  
High Gain Antenna ◽  
Relative Bandwidth ◽  
Control Capability

In this paper, a new high-gain antenna with beam control based on multilayer non-uniform metasurfaces (MNMSs) is proposed. The MNMS consists of multilayer non-uniform square and ring metal patches array. The phase-shift of the MNMS element can achieve 310° with the variation of geometrical sizes. Moreover, four high-gain antennas based on MNMS element are designed, fabricated, and measured to realize 0°, 30°, 45°, and 60° beam control in pitching plane, respectively. Relative bandwidth of the proposed high-gain antenna is above 12%. The simulated and measured results of the proposed antennas show that the wide-angle and azimuth direction beam control capability can be effectively realized by integrating different MNMS with the feeding horn antenna.

scholarly journals A Method for Measuring the Maximum Measurable Gain of a Passive Intermodulation Chamber

Electronics ◽  
2021 ◽  
Vol 10 (7) ◽  
pp. 770
Author(s):  
Zhanghua Cai ◽  
Yantao Zhou ◽  
Lie Liu ◽  
Francesco de Paulis ◽  
Yihong Qi ◽  
...  
Keyword(s):  
Approximate Method ◽  
Path Loss ◽  
High Gain ◽  
Directional Antenna ◽  
Anechoic Chamber ◽  
Measurement Interval ◽  
High Gain Antenna ◽  
Specific Relationship ◽  
Method Of Measurement ◽  
Passive Intermodulation

This paper presents an approximate method that allows the calculation of the maximum measurable gain (MMG) in an anechoic chamber. This method is realized by using a low passive intermodulation (PIM) medium-gain directional antenna. By reducing the distance between the antenna and the wall of the chamber to reduce path loss, the purpose of replacing a high-gain antenna with a medium-gain antenna is achieved. The specific relationship between distance and equivalent gain is given in this paper. The measurement interval is determined by the 3 dB beamwidth of the measurement antenna to scan the whole chamber. A set of corresponding data for the residual PIM level and the MMG of the chamber can be obtained by the method of measurement outlined herein. The feasibility of this method was verified by measurements in two PIM measurement chambers.

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