Denis A. Letavin, Yury E. Mitelman, Victor A. Chechetkin. Usage of lowpass filters for miniaturization of microstrip branch-line hybrid couplers. In 2016 International Conference on Advances in Computing, Communications and Informatics, ICACCI 2016, Jaipur, India, September 21-24, 2016. pages 2311-2314, IEEE, 2016. [doi]
Abstract is missing.