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- W2912903060 abstract "This paper proposed a wideband 90-degree forward coupler with tunable coupling ratio. The proposed coupler is designed based on two 90°hybrids and varactor based tuning networks. The varactor based tuning network changes the reflection phase difference between the even- and odd-mode circuits of the proposed coupler and leads to the variable coupling ratio. The varactor diodes in the tuning network with two different bias voltages can achieve wide tunable coupling ratio and operation bandwidth. Example circuit covers 1-2GHz. The input return loss and isolation can be kept in good performance across the designed band while the coupling ratio is tuning from +9dB to −20dB. The prototype circuit is fabricated on a 0.5mm-thick RO4003 substrate to demonstrate the proposed wide band tunable coupler." @default.
- W2912903060 created "2019-02-21" @default.
- W2912903060 creator A5015210128 @default.
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- W2912903060 date "2018-11-01" @default.
- W2912903060 modified "2023-09-26" @default.
- W2912903060 title "A Wideband Forward Coupler with Tunable Coupling Ratio Using Varactor Based Tuning Network" @default.
- W2912903060 cites W2040489051 @default.
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- W2912903060 doi "https://doi.org/10.23919/apmc.2018.8617311" @default.
- W2912903060 hasPublicationYear "2018" @default.
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