An Innovative Ultra Wideband Microstrip Phase Shifter Based on the LANGE Coupler

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Provided by: International Journal of Science and Engineering Applications (IJSEA)
Topic: Hardware
Format: PDF
In this paper, the authors explain about coupled line in the standard schiffman phase shifters structure and replace it with Lange coupler. To having a wider bandwidth, the stronger coupling is required. One way to achieve strong coupling is using of the parallel coupled lines that this property exist in the Lange coupler. So this paper discusses the design of fixed broadband phase shifter by using the Lange coupler and a novel phase shifters will be introduced according to the standard schiffman phase shifters. Finally, optimal parameters to achieve the desired performance will be shown.
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