scholarly journals Selectivity of a resonant cavity antenna

2019 ◽  
Vol 30 ◽  
pp. 05033
Author(s):  
Viktor Bukharin ◽  
Nikolay Voytovich
Keyword(s):  
Antenna Array ◽  
Resonant Cavity ◽  
Experimental Results ◽  
Glide Path ◽  
Radiating Element ◽  
Electrodynamic Modeling

The main selective characteristics of a Resonant Cavity Antenna, which is a radiating element of the antenna array of a glide path station, are presented. The results of rigorous electrodynamic modeling of a resonator antenna and experimental results of studies on antenna samples are presented

scholarly journals A Design of Wide Band and Wide Beam Cavity-Backed Slot Antenna Array with Slant Polarization

2016 ◽  
Vol 2016 ◽  
pp. 1-7
Author(s):  
Huiying Qi ◽  
Ke Xiao ◽  
Fei Zhao ◽  
Shunlian Chai ◽  
Wenlu Yin
Keyword(s):  
Antenna Array ◽  
Wide Band ◽  
Experimental Results ◽  
Slot Antenna ◽  
Center Frequency ◽  
Challenging Problem ◽  
Wide Beam ◽  
Limited Size

Design of antenna array under the limitation of restricted size is a challenging problem. Cavity-backed slot antenna is widely used because of its advantages of small size, wide band, and wide beam. In this paper, a design of wide band and wide beam cavity-backed slot antenna array with the slant polarization is proposed. To obtain wide band and wide beam with limited size, the inverted microstrip-fed cavity-backed slot antenna (IMF-CBSA) is adopted as the element of 1 × 4 antenna array. The slant polarized antennas and their feeding networks are adopted because of their simple structures. The performance of the proposed antenna array is verified by the simulations and experiments. The measured VSWR < 2 bandwidth is 55% at the center frequency 21.8 GHz, and the gain is larger than 12.2 dB. Experimental results demonstrate that the proposed design achieves wide band and beam with the size of 68 mm × 56 mm × 14.5 mm.

In—Line Measurement Of High Temperature Dielectric Constant In The Process Of Sintering

1996 ◽  
Vol 430 ◽  
Author(s):  
Zhou Jian ◽  
Cheng Jiping ◽  
Tang Yuling ◽  
Qiu Jinyu
Keyword(s):  
Dielectric Constant ◽  
High Temperature ◽  
Resonant Cavity ◽  
Ceramic Materials ◽  
Dielectric Constants ◽  
Experimental Results ◽  
Cavity Method ◽  
Experimental Basis ◽  
Ceramic Samples ◽  
Line Measurement

AbstractIn this paper, a resonant cavity method is developed and some experimental results for measuring dielectric constants of ceramic samples (e. g. Al2O3) under different sintering temperatures are reported. The experiments show that this method has higher precision and good prospects of in—line monitoring the high temperature dielectric constant in the process of raising the temperature of the samples. These results provide some scientific experimental basis for physical research of ceramic materials.

Design and Implementation of an Adaptive Space–Time Antenna Array for GPS Receivers

Frequenz ◽  
2015 ◽  
Vol 69 (3-4) ◽  
Author(s):  
Jianxing Li ◽  
Ming Zhang ◽  
Hongyu Shi ◽  
Shi Zheng ◽  
Anxue Zhang
Keyword(s):  
Antenna Array ◽  
Global Positioning System ◽  
Experimental System ◽  
Space Time ◽  
Experimental Results ◽  
Lms Algorithm ◽  
Least Mean Square ◽  
Total Size ◽  
Gps Receivers ◽  
Global Positioning

AbstractIn this paper, an adaptive space–time antenna array to preserve global positioning system (GPS) signals while at the same time cancelling all interfering signals was designed and implemented. In the design, a new constraint vector and modified least mean square (M-LMS) algorithm were introduced and utilized to compute the real-time weights. An experimental system with a total size of 200 mm×200 mm×50 mm was implemented to verify the design. Design considerations and experimental results were presented and discussed. Experimental results show that high anti-jam capability has been achieved in the presence of wideband interfering signals. Therefore, the proposed design can be well applied for GPS receivers to enhance robustness.

scholarly journals Wide Scanning Angle Millimetre Wave 1 × 4 Planar Antenna Array on InP at 300 GHz

2021 ◽  
Vol 11 (15) ◽  
pp. 7117
Author(s):  
Bilal Hussain ◽  
Henrique M. Salgado ◽  
Luís M. Pessoa
Keyword(s):  
Antenna Array ◽  
Mutual Coupling ◽  
Phased Array ◽  
Planar Antenna ◽  
Millimetre Wave ◽  
Scanning Angle ◽  
Gain Variation ◽  
Inp Substrate ◽  
Radiating Element ◽  
Planar Antenna Array

The design of a uniformly spaced 1 × 4 linear antenna array using epitaxial layers of benzocyclobutene over an InP substrate is demonstrated. The array elements are conjugately matched with a uni-travelling carrier photodiode at the input. The phased array is optimised to counteract mutual coupling effects by introducing metal strips with isolated ground planes for each radiating element. The proposed antenna array can provide a gain of 10 dBi with a gain variation of ±3 dB. The array operates over a bandwidth of 10 GHz (295–305 GHz) with a wide scanning angle of 100° in the broadside.

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