Title :
Phase shifter using an artificial magneto-dielectric for beam-tilting of base station array antenna
Author :
Lee, Youngsung ; Moon, Junyoung ; Ha, Jaegeun ; Lee, Youngki ; Choi, Jaehoon
Author_Institution :
Dept. of Electron. & Comput. Eng., Hanyang Univ., Seoul, South Korea
Abstract :
A phase shifter using an artificial magneto-dielectric substrate for array antenna is proposed. The miniaturization was achieved using an artificial magneto-dielectric (AMD) realized by a split ring resonator (SRR). By using an AMD on a T-junction power divider, a phase shift was designed to operate over the Mobile-WiMAX band (2.3 GHz ~ 2.4 GHz). The proposed AMD is compact in size and yields low insertion loss. The designed phase shifter has a return loss of higher than 10dB and transmission coefficient of less than 7dB from 1.8GHz to 2.4GHz. The array antenna with the proposed phase shifter has a beam-tilting capability of 10 degree at 2.4 GHz.
Keywords :
UHF antennas; UHF phase shifters; antenna arrays; dielectric resonator antennas; power dividers; T-junction power divider; artificial magneto-dielectric substrate; base station array antenna; beam-tilting capability; frequency 1.8 GHz to 2.4 GHz; mobile-WiMAX; phase shifter; split ring resonator; transmission coefficient; Antenna arrays; Arrays; Microwave theory and techniques; Permeability; Phase shifters; Power dividers; Substrates; Array Antenna; Artificial Magneto-dielectric (AMD); Beam-Tilting; Phase Shifter; Split-Ring Resonator(SRR);
Conference_Titel :
Microwave Conference Proceedings (APMC), 2011 Asia-Pacific
Conference_Location :
Melbourne, VIC
Print_ISBN :
978-1-4577-2034-5
