Title :
A Double-Layer Dipole-Array Polarizer with a Low-Sidelobe Radial Line Slot Antenna
Author :
Unno, Masahide ; Hirokawa, Jiro ; Ando, Makoto
Author_Institution :
Dept. of Electr. & Electron. Eng., Tokyo Inst. of Technol., Tokyo
Abstract :
We design a double-layer dipole polarizer to convert circular polarization to linear one with reflection cancellation to mount over a sidelobe-suppressed circularly-polarized radial line slot antenna (RLSA) at 9.3GHz. The measured XPD of only the polarizer is 15.1dB at 9.3GHz. The center frequency of the polarizer in the measurement becomes higher by 400MHz than that in the design. The result of the linearly polarized RLSA integrated with the polarizer nearly equals to that of the polarizer itself.
Keywords :
dipole antenna arrays; electromagnetic wave polarisation; linear antenna arrays; slot antenna arrays; XPD; circular polarization; double-layer dipole-array polarizer; linearly polarized RLSA; low-sidelobe radial line slot antenna; reflection cancellation; Antenna measurements; Antenna radiation patterns; Apertures; Dipole antennas; Feeds; Frequency measurement; Optical reflection; Polarization; Reflector antennas; Slot antennas;
Conference_Titel :
Microwave Conference, 2007. APMC 2007. Asia-Pacific
Conference_Location :
Bangkok
Print_ISBN :
978-1-4244-0748-4
Electronic_ISBN :
978-1-4244-0749-1
DOI :
10.1109/APMC.2007.4555076
