Paper Title
Small Size Dual Band Microstrip Antenna with One Band Circularly Polarized Characteristics

Abstract
This research article is going to inform a dual frequency band triangular -shaped microstrip antenna. The antenna provides dual frequency bands and a circularly polarized band which is superimposed with the higher frequency band. The dual frequency with circular polarization characteristics has been acquired by using two additional slits on the triangular shaped microstrip patch antenna and a defective ground structure with a small notch. The proposed antenna contributes two frequency bands of 2.2-3 GHz and 8.1-9.2 GHz. The obtained circular polarization bandwidth ranges from 7.95 GHz to 9.13 GHz. The simulated peak gain at 8.1 GHz is 9.13 dBi respectively. The radiation patterns (E plane and H plane) are satisfactory at the different resonate frequencies of the proposed antenna. The proposed antennas are designed and simulated by high-frequency-structure-simulator (HFSS) software and simulated results (reflection co-efficient peak gain and normalized (EH plane) radiation patterns, right-handed circularly polarized radiation pattern and left-handed circularly polarized radiation pattern) are discussed here. The proposed antenna might be beneficial for many wirelessly efficient applications. Keywords - Triangular Patch Antenna, Dual-Frequency, Circular Polarization, Reflection Co-Efficient, Gain And Radiation Patterns