Design & Analysis of Microstrip Antenna with Multi-frequency Operations
Manish Rai1, Sandeep Kumar2, Jayanta Ghosh3
1Manish Rai, Electronics & Communication Department, National Institute of Technology Patna, India.
2P.Sandeep Kumar, Electronics & Communication Department, National Institute of Technology Patna, India.
3Dr. Jayanta Ghosh, Electronics & Communication Department, National Institute of Technology Patna, India.
Manuscript received on March 20, 2013. | Revised Manuscript received on April 15, 2013. | Manuscript published on April 30, 2013. | PP: 335-338 | Volume-2, Issue-4, April 2013. | Retrieval Number: D1437042413/2013©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: In this paper the theoretical and simulated results of rectangular microstrip are presented which can be utilized for multi-frequency operation. For this purpose, two rectangular microstrip antennas are designed with center frequencies 9 GHz and 5.67 GHz. Various parameter such as width, dielectric constant & effective length are calculated. Then the antenna impedance is matched to 50 ohm of coaxial fed for maximum power transfer. Now the designed structure is rearranged for multi-frequency operation by connecting two microstrip antennas at corner with corner excitation. The operating frequency, return loss and radiation pattern of the proposed structure are investigated. We observe a drastic reduction in resonant frequency. The radiation pattern for each resonating frequencies is nearly same. The frequency ratio (the ratio of second or higher resonating frequency to the first resonating frequency) of the proposed antenna is observed to be increased. The entire simulation work is done on IE3D software.
Keywords: Microstrip Antenna, Rectangular, Multi-frequency, Return loss, Frequency Ratio.