scholarly journals Design of Arbitrarily Shaped Planar Microstrip Antenna Arrays with Improved Efficiency

2013 ◽  
Vol 2013 ◽  
pp. 1-10 ◽  
Author(s):  
Sheng Ye ◽  
Xianling Liang ◽  
Wenzhi Wang ◽  
Junping Geng ◽  
Ronghong Jin ◽  
...  
Keyword(s):  
Antenna Array ◽  
Antenna Arrays ◽  
Microstrip Antenna ◽  
Radiation Efficiency ◽  
Circular Array ◽  
Design Technique ◽  
Antenna Aperture ◽  
Microstrip Antenna Array ◽  
Microstrip Array

A design technique is described for an arbitrarily shaped planar microstrip antenna array with improved radiation efficiency. In order to fully utilize the limited antenna aperture, several basic modules are proposed from which we construct the array. A consideration of the aperture shape shows that with several practical examples a proper combination of these basic modules not only allows the convenient design of arbitrarily-shaped microstrip array, but also helps to improve the aperture radiation efficiency. To confirm the feasibility of the approach, a circular array with 256 elements was constructed and fabricated. Both computed and measured aperture radiation results are compared and these demonstrate that the design technique is effective for arbitrarily-shaped planar microstrip arrays.

scholarly journals Study of Four Element Microstrip Antenna Array Using Patch Type Electromagnetic Band Gap Structure

2018 ◽  
Vol 8 (5) ◽  
pp. 3470-3474
Author(s):  
K. P. Rao ◽  
P. V. Hunagund ◽  
R. M. Vani
Keyword(s):  
Band Gap ◽  
Antenna Array ◽  
Antenna Arrays ◽  
Microstrip Antenna ◽  
Radiation Characteristics ◽  
Patch Type ◽  
Electromagnetic Band Gap ◽  
Microstrip Antenna Array ◽  
Band Gap Structure ◽  
Gap Structure

This paper describes enhancements in the performance of four element microstrip antenna array. The conventional microstrip antenna array is producing gain equal to 6.81dB. With the introduction of U shape patch type electromagnetic band gap structure, the proposed microstrip antenna array is producing an improved gain of 20.33dB. It is producing reduced mutual coupling of -31.44, -36.41 and -31.62dB respectively. The radiation characteristics of the proposed microstrip antenna array are improved with appreciable decrease in back lobe radiation and increase in forward power. It is resonating at single band at 5.53GHz, producing an overall bandwidth of 109.45%, against 4.89% of conventional microstrip antenna array. Microstrip antenna arrays are designed using Mentor Graphics IE3D software and measured results are obtained using vector network analyzer.

Eight Element Antenna Array With Reduced Back Lobe Radiation

2020 ◽  
Vol 5 (2) ◽  
pp. 78-89
Author(s):  
Prahlada Rao ◽  
VANI R M ◽  
P V Hunagund
Keyword(s):  
Dielectric Constant ◽  
Resonant Frequency ◽  
Antenna Array ◽  
Antenna Arrays ◽  
Microstrip Antenna ◽  
Mutual Coupling ◽  
Dielectric Substrate ◽  
Good Reduction ◽  
Radiation Properties ◽  
Microstrip Antenna Array

The paper presents the improvement in the performance of eight element microstrip antenna array. The overall bandwidth of the proposed microstrip antenna array is equal to 85.74 % as compared to 4.98 % of the conventional antenna array. The proposed microstrip antenna array is producing good reduction in mutual coupling values at the resonant frequency of 5.53 GHz. Moreover, the radiation properties of conventional antenna array are improved with good reduction in power radiated in the undesired direction. The proposed microstrip antenna array is producing a healthy size reduction of 47.19 %. FR-4 glass epoxy substrate is used as dielectric substrate which has a dielectric constant of 4.2 and loss tangent of 0.0245. The microstrip antenna arrays are designed using Mentor Graphics IE3D software.

scholarly journals Millimeter-Wave Microstrip Antenna Array Design and an Adaptive Algorithm for Future 5G Wireless Communication Systems

2016 ◽  
Vol 2016 ◽  
pp. 1-10 ◽  
Author(s):  
Cheng-Nan Hu ◽  
Dau-Chyrh Chang ◽  
Chung-Hang Yu ◽  
Tsai-Wen Hsaio ◽  
Der-Phone Lin
Keyword(s):  
Antenna Array ◽  
Millimeter Wave ◽  
Antenna Arrays ◽  
Microstrip Antenna ◽  
Communication Systems ◽  
Minimum Mean Square Error ◽  
High Gain ◽  
Wireless Communication Systems ◽  
Low Profile ◽  
Microstrip Antenna Array

This paper presents a high gain millimeter-wave (mmW) low-temperature cofired ceramic (LTCC) microstrip antenna array with a compact, simple, and low-profile structure. Incorporating minimum mean square error (MMSE) adaptive algorithms with the proposed 64-element microstrip antenna array, the numerical investigation reveals substantial improvements in interference reduction. A prototype is presented with a simple design for mass production. As an experiment, HFSS was used to simulate an antenna with a width of 1 mm and a length of 1.23 mm, resonating at 38 GHz. Two identical mmW LTCC microstrip antenna arrays were built for measurement, and the center element was excited. The results demonstrated a return loss better than 15 dB and a peak gain higher than 6.5 dBi at frequencies of interest, which verified the feasibility of the design concept.

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