Bandwidth Improvement of the Rectangular Microstrip Antenna by Using Single Dipole Stub
Yazdan Khan1, Ashish Kumar2, Aakash Dhiman3
1Yazdan Khan, ECE, Shoolini University, Solan (H.P), India.
2Ashish Kumar, ECE, Shoolini University, Solan (H.P), India.
3Aakash Dhiman, ECE, Shoolini University, Solan (H.P), India.
Manuscript received on March 24, 2013. | Revised Manuscript received on April 08, 2013. | Manuscript published on April 30, 2013. | PP: 280-282 | Volume-2, Issue-4, April 2013. | Retrieval Number: D1395042413/2013©BEIESP

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Abstract: In the most recent days microstrip antennas are mostly used in the wireless communication due to the salient features like low cost, less weight, small size. But these antennas are having some drawbacks like narrow bandwidth, low gain etc. In this paper a microstrip antenna with wide bandwidth is presented. For this purpose we took two different radiating elements which are connected together through a matched section and these elements are embedded on a single layer structure. This new introduced structure offers a dual-band microstrip antenna. By controlling the resonant frequency of these two elements, means by keeping constant value of resonant frequency of one element and varying the resonant frequency of other element, then a much more improved bandwidth approximately 21 % has been obtained. Representation, calculation and measurement for this new antenna has been done with the help of software MATLAB and also from EM-TALK online antenna calculator.
Keywords: Bandwidth Improvement; Microstrip Antenna; Radiating elements; Resonant Frequency.