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

fYear

2011

Firstpage

1830

Lastpage

1833

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference Proceedings (APMC), 2011 Asia-Pacific

Conference_Location

Melbourne, VIC

Print_ISBN

978-1-4577-2034-5

Type

conf

Filename

6174129