Title :
Design of a WLAN antenna with high isolation characteristic
Author :
Cha, Sung-Yong ; Lee, Wang-Sang ; Oh, Kyoung-Sub ; Yu, Jong-Won
Author_Institution :
Korea Adv. Inst. of Sci. & Technol. (KAIST), Daejeon, South Korea
Abstract :
In this letter, a design procedure of a wideband WiFi antenna is presented. The proposed antenna consists of a 4-port patch antenna, LTCC hybrid quadrature coupler, and front-end structure. By taking advantage of LTCC components, the bandwidth property is improved and the front-end structure size is minimized. Also, using the proposed antenna and front-end structure, a low cost repeater system is implemented successfully. For verification, the proposed antenna is fabricated on FR4 substrate. From the measured results at the operating frequency 2.45 GHz, isolation between transmitter and receiver is achieved below -40 dB over a 100MHz bandwidth.
Keywords :
UHF antennas; ceramic packaging; microstrip antennas; wireless LAN; 4-port patch antenna; FR4 substrate; LTCC hybrid quadrature coupler; WLAN antenna; frequency 2.45 GHz; high isolation characteristic; receiver; transmitter; wideband Wi-Fi antenna; Antenna measurements; Bandwidth; Frequency measurement; Patch antennas; Repeaters; Transmission line measurements; 4-port patch antenna; LTCC; WiFi antenna; circulator; isolation; repeater;
Conference_Titel :
Microwave Conference Proceedings (APMC), 2011 Asia-Pacific
Conference_Location :
Melbourne, VIC
Print_ISBN :
978-1-4577-2034-5
