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.

Design and Analysis of Full and Half Mode Substrate Integrated Waveguide Planar Leaky Wave Antenna with Continuous Beam Scanning in X-Ku Band

Frequenz ◽  
2019 ◽  
Vol 73 (5-6) ◽  
pp. 171-178 ◽  
Author(s):  
Ved Prakash ◽  
Sunita Kumawat ◽  
Priti Singh
Keyword(s):  
Characteristic Impedance ◽  
Substrate Integrated Waveguide ◽  
Continuous Beam ◽  
Leaky Wave ◽  
Beam Scanning ◽  
Paper Substrate ◽  
Maximum Gain ◽  
Leaky Wave Antenna ◽  
Wave Antenna ◽  
Frequency Changes

AbstractIn this paper, substrate-integrated waveguide (SIW) and half mode substrate integrated waveguide (HM-SIW) periodic leaky wave antennas (LWAs) are presented for the antenna applications. The continuous beam scanning (CBS) is realized by optimizing the unit cell by matching its impedance to the characteristic impedance of the waveguide. This leaky wave antenna is capable of total 60 ° scanning from −38 ° to + 22 ° as the frequency changes from 10.17 GHz to 16.3 GHz with a maximum gain of 11 dBi. Moreover, for further miniaturization, HM-SIW technology is employed in the presented LWA. This LWA is also capable of CBS from −50 ° to + 26 ° in the frequency band of 10 GHz to 16.5 GHz with a maximum gain of 12 dBi. The final prototypes of the both these antenna are fabricated and measured results are in agreement with the simulated ones.

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.

scholarly journals A Wide-Angle Scanning Leaky-Wave Antenna Based on a Composite Right/Left-Handed Transmission Line

2020 ◽  
Vol 10 (6) ◽  
pp. 1927 ◽  
Author(s):  
Shaoyi Xie ◽  
Jiawei Li ◽  
Guangjian Deng ◽  
Jiaxin Feng ◽  
Shaoqiu Xiao
Keyword(s):  
Transmission Line ◽  
Low Cost ◽  
Coplanar Waveguide ◽  
Main Beam ◽  
Wide Angle ◽  
Leaky Wave ◽  
Left Handed ◽  
Leaky Wave Antenna ◽  
Wave Antenna ◽  
Frequency Independent

This paper presents a frequency-independent, wide-angle scanning leaky-wave antenna (LWA), based on the composite right/left-handed transmission line (CRLH TL). The proposed LWA consists of a coplanar waveguide-grounded (CPWG) structure loaded by varactors. Loaded varactors are used to control the phase constant of the fundamental mode of the LWA by adjusting the applied DC voltage. The LWA has an excellent wide-angle scanning capability, a simple structure, and low cost. Results show that the main beam of an LWA with 20unit cells can scan from −66° to 62° at the operation frequency of3.0 GHz, with a peak gain of 9.9 dBi, and a gain fluctuation of less than 4.9 dB. The operation bandwidth and radiation efficiency are about 13% and over 50%, respectively. A 10-unit cascaded LWA prototype was designed, fabricated, and measured to verify the design concept.

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.

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