Title :
Arbitrary dual-band circularly polarized patch antenna
Author :
Gani, Herman ; Guo, Y.X. ; Ong, L.C.
Author_Institution :
Inst. for Infocomm Res., Singapore, Singapore
Abstract :
A novel dual-band circularly polarized antenna is proposed with each band in a broadband operation. A dual-band double annular slot antenna is used as the radiator. A dual-band branch line coupler (BLC), which is obtained by replacing the λ/4 right-handed transmission lines (RHTL) in a conventional BLC with λ/4 composite right/left handed transmission lines (CRLH TLs), is employed to feed the dual-band radiator. The design has been simulated by IE3D and ADS.
Keywords :
UHF antennas; antenna feeds; broadband antennas; electromagnetic wave polarisation; microstrip antennas; microstrip couplers; multifrequency antennas; slot antennas; 1.7 to 1.85 GHz; 860 to 980 MHz; BLC; CRLH TL; arbitrary dual-band antenna; branch line couplers; broadband operation; circularly polarized patch antenna; double annular slot antenna radiator; quarter-wavelength composite right/left handed transmission lines; Bandwidth; Broadband antennas; Couplers; Dual band; Feeds; Frequency; Impedance; Patch antennas; Polarization; Slot antennas;
Conference_Titel :
Antenna Technology: Small Antennas and Novel Metamaterials, 2005. IWAT 2005. IEEE International Workshop on
Print_ISBN :
0-7803-8842-9
DOI :
10.1109/IWAT.2005.1461063
