A compact suspended planar patch antenna for microwave imaging sensor array

Proceedings of the 2015 Third International Conference on Computer, Communication, Control and Information Technology (C3IT) Pub Date : 2015-03-16 DOI:10.1109/C3IT.2015.7060225

S. B. Belamgi, S. Ray

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引用次数: 1

Abstract

A compact suspended planar patch antenna is presented for microwave imaging sensor array designed at ISM Band. The radiating patch of the compact suspended antenna is placed at a height of 5mm considering air dielectric substrate (εr = 1.001). The antenna is fed by a coaxial probe and single shorting post is placed in its lower left corner of radiating edge. More compactness is achieved by cutting a single rectangular slot at one of the radiating edges of the patch antenna, resulting in an area reduction factor of approximately equal to 20. Compact suspended planar patch antenna design equations are validated by experimental data and data obtained using MoM based EM simulator (IE3D). The proposed antenna provides resonant frequency 2.45 GHz, impedance bandwidth 3.22%, S11 of-33 dB, gain of 3.9 dBi, and directivity 4.43 dBi with a high radiation efficiency of 88.7%. It is needed for microwave imaging sensor arrays. Simulated and fabricated planar patch antenna has achieved compact design by 95% size reduction compared to a conventional suspended planar patch antenna.

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一种用于微波成像传感器阵列的小型悬浮平面贴片天线

提出了一种用于ISM波段微波成像传感器阵列的小型悬浮平面贴片天线。考虑空气介质衬底，紧凑悬浮天线的辐射贴片放置在5mm高度(εr = 1.001)。天线由同轴探头馈电，在其辐射边缘的左下角放置单个短柱。通过在贴片天线的辐射边缘之一切割单个矩形槽来实现更紧凑性，从而产生约等于20的面积缩小系数。通过实验数据和基于MoM的电磁模拟器(IE3D)数据验证了紧凑悬浮平面贴片天线的设计方程。该天线谐振频率为2.45 GHz，阻抗带宽为3.22%，S11 -33 dB，增益为3.9 dBi，指向性为4.43 dBi，辐射效率高达88.7%。这是微波成像传感器阵列所需要的。与传统的悬挂式平面贴片天线相比，模拟制作的平面贴片天线实现了小型化设计，缩小了95%的尺寸。

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Proceedings of the 2015 Third International Conference on Computer, Communication, Control and Information Technology (C3IT)

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