referaty konferencyjne Gruszczyński S., Sachse K., Compensated broadband five-section directional coupler for application in Butler matrices, [w:] 4-th Microwave and Radar Week MRW-2010: 18th International Conference on Microwaves, Radar and Wireless Communications, MIKON-2010, Vilnius, Lithuania, June 14-16, 2010. Vol. 1 / [ed. Borisas Levitas]. Vilnius: JUSIDA, . s. 240–243 Sachse K., Wincza K., Broadband 4x4 Butler matrix in microstrip multilayer technology designed with the use of three-section directional couplers and phase correction networks, [w:] 4-th Microwave and Radar Week MRW-2010: 18th International Conference on Microwaves, Radar and Wireless Communications, MIKON-2010, Vilnius, Lithuania, June 14-16, 2010. Vol. 1 / [ed. Borisas Levitas]. Vilnius: JUSIDA, . s. 260–263 Gruszczyński S., Sachse K., Wincza K., Design of a broadband low-loss coupled-line multisection symmetrical 3-dB directional coupler in suspended stripline technology, [w:] 2010 Asia-Pacific Microwave Conference Proceedings, APMC 2010, Dec. 7-10 , Yokohama, Japan. Tokyo: The Institute of Electronics, Information and Communication Engineers, cop. 2010. s.