Rhombus-Shaped Cross-Slot and Notched Loaded Microstrip Patch Antenna

Rhombus-Shaped Cross-Slot and Notched Loaded Microstrip Patch Antenna

Gaurav Varma (Bundelkhand Institute of Engineering and Technology Jhansi, India) and Rishabh Kumar Baudh (Bundelkhand Institute of Engineering and Technology Jhansi, India)
DOI: 10.4018/978-1-5225-9683-7.ch009
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The aim is to design a Rhombus microstrip patch antenna. The antenna operates at FL=1.447 GHz to FH=2.382 GHz frequency for wireless local area network (WLAN). This antenna operates at f=1.914 GHz resonant frequency. In microstrip patch antenna, many types of shapes like circular, triangular, rectangular, square, ring shape, etc. are used, but in this design a rectangular shape is used. In proposed antenna, the accuracy and efficiency are increased. Integral equation three-dimensional (3D) software (IE3D) is used for the optimize of the rhombus cross-slotted antenna design. The IE3D uses a full wave method of moment simulator. This antenna fabricated on FR4 glass epoxy double-sided copper dielectric material with relative permittivity of ∈ =4.4, thickness h= 1.60mm, and loss tangent is 0.013.
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Antenna Design And Material

A dielectric constant of this proposed antenna is 4.4, height of the dielectric substrate h=1.6mm and loss tangent tan δ=.012 are selected for the designing of this antenna. The designing frequency (fr) is 2.4 GHz.

Figure 1.

Geometry of proposed antenna


For designing a rectangular Microstrip patch antenna the width and length are calculated as below (Chadha and Kumar, 2012). The width of the rectangular patch can be calculated

Where C = Light’s speed (3x1011 mm/s), ƒ = Antenna design frequency, εr = Dielectric constant of substrate

The effective dielectric constant εre is calculated as

The extended patch length ΔL is calculated as and actual value of the patch length is calculated as follows

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