{"title":"Miniaturization design of 3dB directional coupler applied to balanced power amplifier in WLAN system","authors":"Weidong Kong, Peng Li, Meng Chang, Guohui Yang","doi":"10.1109/ICEICT.2016.7879770","DOIUrl":null,"url":null,"abstract":"This paper designs a 3dB branch line coupler which is applied to the balanced power amplifier. By the traditional meandering method, the microstrips of the branch line coupler are bended to inside, thereby the size of the structure is reduced. The size of optimized branch line coupler is 0.18λ×0.13λ. Test results show that, in the 2.4∼2.485 GHz band, the magnitude of the straight port is consistent with that of the coupling port, and the phase difference can be 90 degree. Also, the isolation degree is greater than 15dB.","PeriodicalId":224387,"journal":{"name":"2016 IEEE International Conference on Electronic Information and Communication Technology (ICEICT)","volume":"74 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2016-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"6","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2016 IEEE International Conference on Electronic Information and Communication Technology (ICEICT)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ICEICT.2016.7879770","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 6
Abstract
This paper designs a 3dB branch line coupler which is applied to the balanced power amplifier. By the traditional meandering method, the microstrips of the branch line coupler are bended to inside, thereby the size of the structure is reduced. The size of optimized branch line coupler is 0.18λ×0.13λ. Test results show that, in the 2.4∼2.485 GHz band, the magnitude of the straight port is consistent with that of the coupling port, and the phase difference can be 90 degree. Also, the isolation degree is greater than 15dB.
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