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Single-feed dual-frequency dual-polarized slotted square microstrip antenna

Microwave and Optical Technology Letters (Impact Factor: 0.62). 06/2000; 25(6). DOI: 10.1002/(SICI)1098-2760(20000620)25:63.3.CO;2-Y
Source: OAI

ABSTRACT A novel dual frequency dual-polarized square microstrip patch antenna embedded with a slot is presented. The proposed antenna offers tunability of the frequency ratio between the two frequencies by adjusting the slot dimensions. This configuration also provides a size reduction up to -51 and 35% for the two modes as compared to a square micro strip patch antenna

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Available from: Vasudevan Kesavath, Dec 17, 2014
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    • "Recent studies on microstrip antennas have primarily concentrated on the improvement of bandwidth and on the design of multifunction operations [1]-[9]. Along with this revised interest on the applications of microstrip antennas, development of efficient and accurate simulation tools to help analyze and design such antennas has gained some interest as well. "
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    ABSTRACT: Dual frequency operation of antennas has become a necessity for many applications in wireless communication systems such as GPS, GSM services operating at two different frequency bands and services of PCS and IMT-2000 applications. Although there are various techniques to achieve dual-band operation from various types of microstrip antennas, there is no efficient design tool that has been incorporated with a suitable optimization algorithm. In this paper the cavity-model based simulation tool along with an intelligent fuzzy system is presented for the design of dual-band microstrip antennas, using multiple shorting strips placed between the patch and ground plane. Since this approach is based on cavity model, the multiport approach is efficiently employed to analyze the effects of the shorting strips on the input impedance. Then the optimization of the positions of shorting strips is performed via an intelligent fuzzy system, to achieve an acceptable antenna operation over the desired frequency bands. The antennas designed by this efficient design procedure were realized experimentally, and the results are compared. In addition, these results are also compared to the results obtained by the commercial electromagnetic simulation tool, FEM-based software HFSS by ANSOFT.
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    • "Recent studies on microstrip antennas have primarily concentrated on the improvement of bandwidth and on the design of multifunction operations [1]–[9]. As a result, almost 100% bandwidth in terms of VSWR, and dual-band operations for GSM900 and GSM1800 WLAN services have been successfully accomplished and demonstrated [1], [6]. "
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    ABSTRACT: Dual-frequency operation of antennas has become a necessity for many applications in recent wireless communication systems, such as GPS, GSM services operating at two different frequency bands, and services of PCS and IMT-2000 applications. Although there are various techniques to achieve dual-band operation from various types of microstrip antennas, there is no efficient design tool that has been incorporated with a suitable optimization algorithm. In this paper, the cavity-model based simulation tool along with the genetic optimization algorithm is presented for the design of dual-band microstrip antennas, using multiple slots in the patch or multiple shorting strips between the patch and the ground plane. Since this approach is based on the cavity model, the multiport approach is efficiently employed to analyze the effects of the slots and shorting strips on the input impedance. Then, the optimization of the positions of slots and shorting strips is performed via a genetic optimization algorithm, to achieve an acceptable antenna operation over the desired frequency bands. The antennas designed by this efficient design procedure were realized experimentally, and the results are compared. In addition, these results are also compared to the results obtained by the commercial electromagnetic simulation tool, the FEM-based software HFSS by ANSOFT.
    IEEE Transactions on Antennas and Propagation 09/2003; DOI:10.1109/TAP.2003.814732 · 2.46 Impact Factor
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    • "Although probe fed microstrip antennas present inherently reduced operating bandwidths in the order of 1{2% at low frequencies [9], multiple works can be found in the literature, focused on improving the impedance bandwidth of these structures. Bandwidths around 4% can be obtained by introducing short circuited parasitic elements [9] or with an H-shaped radiating patch [10], providing circular polarization. Further improvements can be achieved using thick air substrates with L-shaped probes [11] (26.5%), Tshaped probes [12] [13] (33{40%) or with stacked patches on thick dielectric layers [14] (up to 60%). "
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    ABSTRACT: A microstrip antenna consists of conducting patch on a ground plane separated by dielectric substrate. This concept was undeveloped until the revolution in electronic circuit miniaturization and large-scale integration in 1970. After that many authors have described the radiation from the ground plane by a dielectric substrate for different configurations. |In this work, a probe fed microstrip antenna design for the implementation of two dimensional arrays with individually fed radiating elements is presented. The performance of the antenna element, both isolated and in a 4 £ 4 fixed array topology, is analyzed HFSS simulation software. Prototypes of the antenna element and of the array are manufactured and measured for the experimental validation of the design We obtained radiation patterns, return loss, input impedance, E-field, H-field and current distributions that are simulated for this proposed antenna with Ansoft-HFSSsoftware.
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