Design and Measurement of Novel Shaped Microstrip Antenna with DGS for Radar Applications

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R. Kiruthika 1 T. Shanmuganantham 1,*

1. Dept. of Electronics Engg., Pondicherry University, Puducherry – 605 014, India

* Corresponding author.


Received: 10 Nov. 2017 / Revised: 29 Dec. 2017 / Accepted: 13 Feb. 2018 / Published: 8 May 2018

Index Terms

Defected Ground Structure, FR4 Epoxy, bandwidth, return loss


In this paper, a novel shaped patch antenna for triple band frequency of operation in X-band (radar) is defined. The antenna resonates under three frequency bands at 10 GHz, 10.93 GHz and 11.68 GHz respectively which are included in the X-band frequency range. The substrate material used as the dielectric between the patch and the ground is of Flame Retardant Version 4 (FR4) Epoxy. The DGS (Defected Ground Structure), usually included in the back conductor of the Microstrip patch antenna is used to tune the frequency and also to boost the characteristics of the antenna. The same is included in this depicted antenna with circular ring shaped slot to vary the performance. FEM (Finite Element Method) based Ansoft High Frequency Structural Simulator (HFSS) V.12 is used for designing and verifying the features of the proposed antenna. The size of the depicted model on the whole is of 31.34 × 28.33 × 1.6 mm3. For the first, second and third resonant frequency, a bandwidth of 480 MHz, 600 MHz and 420 MHz correspondingly is obtained with a return loss value of -18.47 dB, -42.22 dB and -19.74 dB. The other parameters of the antenna are also conferred in this paper.

Cite This Paper

R. Kiruthika, T. Shanmuganantham," Design and Measurement of Novel Shaped Microstrip Antenna with DGS for Radar Applications", International Journal of Wireless and Microwave Technologies(IJWMT), Vol.8, No.3, pp. 33-41, 2018. DOI: 10.5815/ijwmt.2018.03.04


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