Logarithmic Slots Antennas Using Substrate Integrated Waveguide

This paper represents new generation of slotted antennas for satellite application where the loss can be compensated in terms of power or gain of antenna. First option is very crucial because it totally depends on size of satellite so we have proposed the high gain antenna creating number of rectang...

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Bibliographic Details
Published in:International journal of microwave science and technology 2015, Vol.2015, p.1-11
Main Authors: Kachhia, Jahnavi, Patel, Amit, Vala, Alpesh, Patel, Romil, Mahant, Keyur
Format: Article
Language:English
Subjects:
Antennas
Arrays
Gain
Microwaves
Noise levels
Satellites
Slot antennas
Waveguides
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Summary:This paper represents new generation of slotted antennas for satellite application where the loss can be compensated in terms of power or gain of antenna. First option is very crucial because it totally depends on size of satellite so we have proposed the high gain antenna creating number of rectangular, trapezoidal, and I shape slots in logarithm size in Substrate Integrated Waveguide (SIW) structure. The structure consists of an array of various shape slots antenna designed to operate in C and X band applications. The basic structures have been designed over a RT duroid substrate with dielectric constant of 2.2 and with a thickness of 0.508 mm. Multiple slots array and shape of slot effects have been studied and analyzed using HFSS (High Frequency Structure Simulator). The designs have been supported with its return loss, gain plot, VSWR, and radiation pattern characteristics to validate multiband operation. All the proposed antennas give gain more than 9 dB and return loss better than −10 dB. However, the proposed structures have been very sensitive to their physical dimensions.
ISSN:1687-5826
1687-5834
DOI:10.1155/2015/629797