Analytical Study of Miniaturization of Microstrip Antenna for Bluetooth/WiMax
In this paper, we propose a different size reduction approach of MSA for Bluetooth, WiMAX applications. Prime emphasize of this work is to study the reactance of MSA, i.e., effect of inductive and capacitive reactance and it is validated by Smith chart. A
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Abstract In this paper, we propose a different size reduction approach of MSA for Bluetooth, WiMAX applications. Prime emphasize of this work is to study the reactance of MSA, i.e., effect of inductive and capacitive reactance and it is validated by Smith chart. A novel technique of insertion of two parallel plates in the middle of patch and in close vicinity to the feed position to achieve the inductive effect for different applications is presented with 82 % size reduction. By single shorting plate along the edge of MSA and near to the feed position separately 2.4 and 3.5 GHz band with 75, 110 MHz BW and 3.4, 3.8 dBi gain, respectively, and 73 % size reduction is obtained. Capacitive effect by varying and selecting optimum feed position without any complexity for dual band WiMAX and WLAN 115, 150 MHz BW with gain 3.8, 4.3 dBi reported and 36 % of size reduction is reported.
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Keywords Miniaturized patch antenna Single/two parallel shorting plate Smith chart Capacitive and inductive reactance
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1 Introduction Compact designing of microstrip patch antennas has received much interest due to the increasing demand of small antennas for private communications systems such as portable and handheld wireless devices.
Pranjali Jumle (✉) Department of Electronics and Tele-Communication, Rajiv Gandhi College of Engineering and Research, Wanadongri, India e-mail: [email protected] Prasanna Zade Department of Electronics and Tele-Communication, Yeshwantrao Chavan of Engineering, Wanadongri, India e-mail: [email protected] © Springer Science+Business Media Singapore 2017 S.C. Satapathy et al. (eds.), Proceedings of the International Conference on Data Engineering and Communication Technology, Advances in Intelligent Systems and Computing 469, DOI 10.1007/978-981-10-1678-3_23
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Pranjali Jumle and Prasanna Zade
Microstrip antennas having the advantages of low profile, light weight, low fabrication cost, and compatibility with MMIC [1, 2], are half-wavelength structures which are bulky in personal wireless devices. Many techniques have been adopted to reduce the size of the patch antennas, such as employing high dielectric substrate [3, 4], introducing fractal geometries [5], introducing shorting post [3, 6], loading chip-resistor and chip-capacitor [7, 8], loading of complementary split-ring resonator [9], loading reactive components [10], lengthening electrical path of the current by meandering [3, 11], introducing slots and slits into the patch [12–14], loading suspended plate [15], also many papers have quoted the metamaterial structures to reduce the size of patch antennas [16]. Also, loading distributed reactive components yield in miniaturization. In [17], paper presents two by two multiple-input multiple-output patch antenna systems with complementary split-ring resonator loading on its ground plane for antenna miniaturization. In [18], a loaded shorting elements is introduced which are parasitic to the driven patch, but are shorted to the ground plane which results in size reduction as well as a
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