A miniaturized wideband double-sided parallel strip line (DSPSL) hybrid coupler with phase inverter

This paper presents a miniaturized wideband DSPSL hybrid coupler with phase inverter; the open-stubs are also introduced to further reduce the size of the hybrid coupler. The design strategies and procedures of the hybrid coupler are presented at first. A prototype operating at 1 GHz is fabricated f...

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Bibliographic Details
Published inDian zi xue bao Vol. 39; no. 6; pp. 1452 - 1455
Main Authors Yang, Guo-Biao, Che, Wen-Quan, Gu, Li-Ming
Format Journal Article
LanguageChinese
Published 01.06.2011
Subjects
Bandwidth
Dubnium
Inverters
Joining
Noise levels
Prototypes
Strategy
Wideband
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Summary:This paper presents a miniaturized wideband DSPSL hybrid coupler with phase inverter; the open-stubs are also introduced to further reduce the size of the hybrid coupler. The design strategies and procedures of the hybrid coupler are presented at first. A prototype operating at 1 GHz is fabricated for verification. The experimental results show that the size of the proposed hybrid is reduced to 11% of the conventional hybrid coupler. The relative operating bandwidth is greater than 80%, return loss at the central operating frequency is less than -20 dB, while the isolation is less than -30 dB.
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ISSN:0372-2112