Isolation Improvement of a Microstrip Patch Array Antenna for WCDMA Indoor Repeater Applications

This paper presents the isolation improvement techniques of a microstrip patch array antenna for the indoor wideband code division multiple access (WCDMA) repeater applications. One approach is to construct the single-feed switchable feed network structure with an MS/NRI coupled-line coupler in orde...

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Bibliographic Details
Published inInternational journal of antennas and propagation Vol. 2012; no. 2012; pp. 1 - 8
Main Authors Lee, Hong-Min, Park, Jinwon
Format Journal Article
LanguageEnglish
Published Cairo, Egypt Hindawi Puplishing Corporation 01.01.2012
Hindawi Publishing Corporation
Wiley
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Summary:This paper presents the isolation improvement techniques of a microstrip patch array antenna for the indoor wideband code division multiple access (WCDMA) repeater applications. One approach is to construct the single-feed switchable feed network structure with an MS/NRI coupled-line coupler in order to reduce the mutual coupling level between antennas. Another approach is to insert the soft surface unit cells near the edges of the microstrip patch elements in order to reduce backward radiation waves. In order to further improve the isolation level, the server antenna and donor antenna are installedinorthogonal direction. The fabricated antenna exhibits a gain over 7 dBi and higher isolation level between server and donor antennas below −70 dB at WCDMA band.
ISSN:1687-5869
1687-5877
DOI:10.1155/2012/264618