Design of absorber based on metamaterial structure to improve the isolation of WCDMA indoor repeater

Author

Nanae Yoon ; Hyoungjun Kim ; Chulhun Seo

Author_Institution

Dept. of Electron. Eng., Soongsil Univ., Seoul, South Korea

fYear

2012

fDate

4-7 Dec. 2012

Firstpage

568

Lastpage

570

Abstract

In this paper, WCDMA indoor repeater antenna for high isolation using the absorber based on Metamaterial structure is proposed. The proposed antenna is composed of main patch, parasitic patch and proposed absorber. The required WCDMA bandwidth is obtained by utilizing the coupling between the main and parasitic patches. The absorber consists of split ring resonators (SRRs) and complementary spiral (CS) structure. The size of the absorber based on metamaterial structure is 14 mm × 14 mm, the absorption is about 93 % at 2.18 GHz. The isolation characteristic of proposed WCDMA indoor repeater antenna is improved by using the proposed absorber. The proposed WCDMA indoor repeater antenna has a gain higher than 6 dBi with a VSWR less than 2, and isolation between the service and donor antenna greater than 80 dB over the WCDMA band from 1.92 GHz to 2.17 GHz, respectively. The volume of the proposed repeater antenna is 90 mm × 90 mm × 44.8 mm.

Keywords

code division multiple access; electromagnetic wave absorption; indoor radio; metamaterial antennas; microstrip antennas; microstrip resonators; radio repeaters; CS structure; SRR; WCDMA bandwidth; WCDMA indoor repeater antenna; WCDMA indoor repeater isolation improvement; absorber design; antenna gain; complementary spiral structure; donor antenna; frequency 1.92 GHz to 2.17 GHz; isolation characteristics; main patch; metamaterial structure; parasitic patch; service antenna; split ring resonators; Metamaterials; Multiaccess communication; Receiving antennas; Repeaters; Spread spectrum communication; Transmitting antennas; WCDMA indoor repeater antenna; absorber; isolation enhancement; metamaterial; patch antenna;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference Proceedings (APMC), 2012 Asia-Pacific

Conference_Location

Kaohsiung

Print_ISBN

978-1-4577-1330-9

Electronic_ISBN

978-1-4577-1331-6

Type

conf

DOI

10.1109/APMC.2012.6421666

Filename

6421666