![]() ![]() In this paper, we obtain the left-handed circularly polarized (LHCP) and right-handed circularly polarized (RHCP) of triangular array eight patches antennas using corporate feeding-line for circularly polarized-synthetic aperture radar (CP-SAR) sensor embedded on unmanned aerial vehicle (UAV) with compact, simple, and efficient configuration. ![]() In conclusion, all of these advantages make it particularly valuable in multistandard antenna applications design such as GSM950, WCDMA1800, LTE2300, and WLAN2400. Moreover, the measured results are good agreement with the simulated results. Furthermore, after CSBA (Model 2) structure was applied to MIMO 22 (Model 3) and the MIMO antenna obtain good mutual coupling (<-15dB). The result showed that proposed antenna CSBA (Model 2) has wider-bandwidth of 58,2% and smaller-size of 18.2%. After the structure of MIMO 22 was applied, the size of antenna MIMO-CBSA (Model 3) became 180 mm x 180 mm with a mutual coupling (S21)=-26.18 dB and mutual coupling (S31)=-26.41 dB. This antenna has a size 63x90 mm and 51.5x90 mm for CCSA (Model 1) and CSBA (Model 2), respectively. The simulation has been conducted using Advanced Design System (ADS). An FR4 substrate with er=4.4, thickness h=1.6 mm, and tan d=0.0265 was used. Therefore, this research was investigated conventional circular shape antenna (CCSA), circular shaped beleved antenna (CSBA), and MIMO circular shaped beleved antenna (MIMO-CBSA) as Model 1, Model 2, and Model 3, respectively. Further, this proposed antenna structure will be applied to multiple input multiple output (MIMO) antenna 22. As the novelty, to enhance bandwidth and reduce antenna size, beleved half-cut microstrip structure is proposed. ![]() In this paper, circular-shaped microstrip antenna was simulated, fabricated, and measured accordingly.
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