scholarly journals Magnetic field assisted beam-scanning leaky-wave antenna utilizing one-way waveguide

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Lujun Hong ◽  
Yun You ◽  
Qian Shen ◽  
Yazhou Wang ◽  
Xing Liu ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Beam Width ◽  
Main Beam ◽  
Leaky Wave ◽  
Beam Scanning ◽  
Scanning Angle ◽  
Leaky Wave Antenna ◽  
Wave Antenna ◽  
The One ◽  
Iron Garnet

AbstractWe propose a Leaky-Wave Antenna (LWA) based on one-way yttrium-iron-garnet (YIG)-air-metal waveguide. We first analyze the dispersion of the LWA, showing the one-way feature and the radiation loss. Owing to the unique one-way dispersive property, the beam radiated from the LWA can have very narrow beam width, at the same time having large scanning angle. The main beam angle obtained by full-wave simulation is consistent with our theoretical prediction with the aid of the dispersion. For a given frequency, we can realize continuous beam scanning by varying the magnetic field, where the 3 dB beam width is much narrower than previously demonstrated. Our results pave a new way to realize continuous angle scanning at a fix frequency for modern communications.

scholarly journals A Miniaturized Periodic Microstrip Leaky Wave Antenna with Shorting Pins

2019 ◽  
Vol 2019 ◽  
pp. 1-7
Author(s):  
Bin Xi ◽  
Yuanxin Li ◽  
Yunliang Long
Keyword(s):  
Transmission Line ◽  
Propagation Constant ◽  
Main Beam ◽  
Leaky Wave ◽  
Beam Scanning ◽  
Antenna Size ◽  
Leaky Wave Antenna ◽  
Wave Antenna ◽  
Effective Reduction ◽  
Frequency Changes

A miniaturized periodic microstrip leaky wave antenna (MLWA) with shorting pins is proposed in this paper. The suggested antenna consists of a number of stubs that are periodically placed on the side of the transmission line, with the outside edges of the stubs being all integrated with shorting pins. In comparison with the whole-width stubs MLWA, the proposed antenna has an advantage of effective reduction in antenna size for the similar beam-scanning capability. A series of simple and effective equations were obtained to calculate the propagation constant and determine the operating band of the antenna. The consistency of the calculated and measured propagation constant confirms the validity of the parameter equations. As demonstrated by experimental results, the main beam scans electronically and continuously from 145° to 61° in the y-z plane as the operating frequency changes from 5.7 GHz to 11.7 GHz.

Dual-polarized Fixed-frequency Beam Scanning Leaky-wave Antenna for 5G Communication

2021 ◽  
Vol 36 (7) ◽  
pp. 858-864
Author(s):  
Hao Li ◽  
Yong Zhou
Keyword(s):  
Electromagnetic Wave ◽  
Main Beam ◽  
Fixed Frequency ◽  
Leaky Wave ◽  
Beam Scanning ◽  
Leaky Wave Antenna ◽  
Wave Antenna ◽  
Low Profile ◽  
5G Communication ◽  
Dual Polarized

A low profile and dual-polarized fixed-frequency beam scanning leaky wave antenna for 5G communication is presented, which is based on a corrugated microstrip line (CML) called spoof surface plasmons transmission line. The antenna radiates horizontally polarized electromagnetic wave and vertically polarized electromagnetic wave using two different periodic antennas elements. The fabricated antenna is measured and the results show that the operating frequency of the antenna is 3.4-3.7 GHz. The measured main beam angle scans from -9° to -30°. The measured gain is from 8.3 dB to 9.7 dB over the working band.

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