Main Article Content
In this paper, a novel circular slotted rectangular patch antenna with three triangle shape Defected Ground Structure (DGS) has been proposed. Radiating patch is made by cutting circular slots of radius 3 mm from the three sides and center of the conventional rectangular patch structure and three triangle shape defects are presented on the ground layer. The size of the proposed antenna is 38 X 25 mm2. Optimization is performed and simulation results have been obtained using Empire XCcel 5.51 software. Thus, a miniaturized antenna is designed which has three impedance bandwidths of 0.957 GHz, 0.779 GHz, 0.665 GHz with resonant frequencies at 3.33 GHz, 6.97 GHz and 8.59 GHz and the corresponding return loss at the three resonant frequencies are -40 dB, -43 dB and -38.71 dB respectively. A prototype is also fabricated and tested. Fine agreement between the measured and simulated results has been obtained. It has been observed that introducing three triangle shape defects on the ground plane results in increased bandwidth, less return loss, good radiation pattern and better impedance matching over the required operating bands which can be used for wireless applications and future 5G applications.
Authors who publish with this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
C.A. Balanis, Antenna theory: analysis and design, John Wiley & Sons, 2016.
A. Sharma, N.K. Atal Rai, Study of Microstrip Rectangular Patch Antenna and its various parameters, International Journal 1(2): pp. 49-51, 2013.
J.L Volakis, C.C. Chen, K. Fujimoto, Small antennas: miniaturization techniques & applications, Vol.1. New York: McGraw-Hill, 2010.
M.U. Khan, M.S. Sharawi, R. Mittra, Microstrip patch antenna miniaturisation techniques: a review, IET Microwaves, Antennas & Propagation 9(9): pp. 913- 922, 2015.
K.H. Chiang, K.W. Tam, Microstrip monopole antenna with enhanced bandwidth using defected ground structure, IEEE antennas and wireless propagation letters, 7: pp. 532-535, 2008.
C. Kumar, D. Guha, Defected ground structure (DGS)- integrated rectangular microstrip patch for improved polarisation purity with wide impedance bandwidth, IET Microwaves, Antennas & Propagation, 8(8): pp. 589-596, 2014.
M.A. Antoniades, G.V. Eleftheriades, A compact multiband monopole antenna with a defected ground plane, IEEE Antennas and wireless propagation letters 7: pp. 652-655, 2008.
P. Singh, R. Tomar, The use of defected ground structures in designing microstrip filters with enhanced performance characteristics, Procedia Technology 17: pp. 58-64, 2014.
L.H. Weng, Y.C. Guo, X.W. Shi, X.Q. Chen, An overview on defected ground structure, Progress In Electromagnetics Research 7: pp. 173-189, 2008.
W.C. Liu, C.M. Wu, Y. Dai, Design of triple-frequency microstrip-fed monopole antenna using defected ground structure, IEEE transactions on antennas and propagation 59(7): pp. 2457-2463, 2011.
J. Pei, A.G. Wang, S. Gao, W. Leng, Miniaturized triple-band antenna with a defected ground plane for WLAN/WiMAX applications, IEEE Antennas and Wireless Propagation Letters 10: pp. 298-301, 2011.
A.K. Gautam, L. Kumar, B.K. Kanaujia, K. Rambabu, Design of compact F-shaped slot triple-band antenna for WLAN/WiMAX applications, IEEE Transactions on Antennas and Propagation 64(3): pp. 1101-1105, 2016.
D.D. Krishna, M. Gopikrishna, and C. K. Aanandan, A CPW-fed triple band monopole antenna for WiMAX/WLAN applications, 38th IEEE European Conference on Microwave, EuMC 2008, pp. 897-900, 2008.
W.S. Chen, K.Y. Ku, Band-rejected design of the printed open slot antenna for WLAN/WiMAX operation, IEEE Transactions on Antennas and Propagation, 56(4): pp. 1163-1169, 2008.
K. Yin, J.P. Xu, Compact ultra-wideband antenna with dual bandstop characteristic, Electronics Letters, 44(7): pp. 453-454, 2008.
J.Y. Deng, Y.Z. Yin, S.G. Zhou, Q.Z. Liu, Compact ultra-wideband antenna with tri-band notched characteristic, Electronics Letters 44(21): pp. 1231- 1233, 2008.
A. Nouri, G.R. Dadashzadeh, A compact UWB bandnotched printed monopole antenna with defected ground structure, IEEE Antennas and Wireless Propagation Letters, 10: pp. 1178-1181, 2011.
M. Abdollahvand, G. Dadashzadeh, D. Mostafa, Compact dual band-notched printed monopole antenna for UWB application, IEEE Antennas and Wireless Propagation Letters 9: pp. 1148-1151, 2010.
X.J. Liao, H.C. Yang, N. Han, Y. Li, Aperture UWB antenna with triple band-notched characteristics, Electronics Letters, 47(2): pp. 77-79, 2011.
A.B. Ericsson, 5G Radio Access-Research and Vision, Ericsson White Paper, 284: pp. 23-3204, 2013.
S. Chen, J. Zhao, The requirements, challenges, and technologies for 5G of terrestrial mobile telecommunication, IEEE Communications Magazine, 52(5): pp. 36-43, 2014.