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Prof. Ashraf Shawky Selim SayedAhmed Mohra :: Publications: |
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| Title: | Compact Cascaded Branch Line Coupler using T-Sections Conversion |
| Authors: | Hesham. A. Mohamed and Ashraf S. Mohra |
| Year: | 2017 |
| Keywords: | Branch line coupler, T- section, small size |
| Journal: | 2017, 34th NATIONAL RADIO SCIENCE CONFERENCE (NRSC 2017), March 13‐16, 2017, Port Said, Egypt Arab Academy for Science, Technology & Maritime Transpt. |
| Volume: | 1 |
| Issue: | 1 |
| Pages: | Not Available |
| Publisher: | Not Available |
| Local/International: | Local |
| Paper Link: | Not Available |
| Full paper | Ashraf Shawky Selim SayedAhmed Mohra_20-2017_compact cascaded branch line coupler using T-section conversion.pdf |
| Supplementary materials | Not Available |
| Abstract: |
The branch line coupler has many applications such as phase shifters, vector modulators, amplifiers and mixers and etc. The conventional branch line coupler consists of four arms each have λ/4 length with different impedances. To broaden the bandwidth, the couplers need to be cascaded, but due to the cascading, the overall size will be very large. To minimize the overall size, a T-section conversion was used instead of each of the quarter wave length arms. The new cascaded coupler occupies 33.5% of the area needed for the conventional cascaded coupler. Added to the size reduction, the new cascaded branch line coupler has nearly the same frequency response and fractional bandwidth as the conventional cascaded branch line coupler. |
