Author_Institution :
Key Lab. of Minist. of Educ. of China for Res. & Design of Electromagn. Compatibility of High Speed Electron. Syst., Shanghai Jiao Tong Univ., Shanghai, China
Abstract :
A fully parameterized angularly zigzagged planar self-complementary dual-armed sinuous antenna with diameter D = 73.8 mm is optimally designed and simulated with Ansoft HFSS™ v.13. Ultra-wideband (S11 ≤ -10 dB), good transient properties, full polarization, and high gain (5 dBi-7 dBi) are acquired within band 1.5 GHz-15 GHz. Three linearly polarized bands (AR≥30 dB): f1=3.1 GHz (2.85 GHz-3.78 GHz, 30%), f3 = 5.5 GHz (5.28 GHz-5.84 GHz, 10%), f4 = 8.4 GHz, f5 = 10 GHz (7.87 GHz-10.41 GHz, 25.4%) and two circularly polarized bands (AR≤15 dB): f2 = 4.6 GHz (4.2 GHz-4.75 GHz, 12%, RHCP), f6 = 13.4 GHz(11.54 GHz-15 GHz, 25.8%, LHCP) are obtained within this band. Gain patterns of these bands are all bidirectional in broadside (Theta = 0°) and almost azimuth-free in horizontal plane with 26°-140° axial ratio beam width. So it is very attractive to application in ultra-wideband multi-polarization systems, such as electronic warfare, track and guidance radar, radio astronomy and other communication systems.
Keywords :
directive antennas; planar antennas; ultra wideband antennas; Ansoft HFSS v.13; axial ratio beam width; bidirectional antenna; communication systems; electronic warfare; frequency 1.5 GHz to 15 GHz; fully parameterized angularly zigzagged planar antenna; gain patterns; guidance radar; horizontal plane; linearly polarized bands; radio astronomy; self-complementary dual-armed sinuous antenna; size 73.8 mm; transient property; ultrawideband antenna; ultrawideband multipolarization systems; Gain; Helical antennas; Polarization; Ultra wideband antennas; LHCP1; RHCP; full polarization; self-complementary; sinuous antenna; ultra-wideband;
