A broadband 3 dB tandem coupler utilizing right/left handed transmission line sections / Kamil STASZEK, Jakub SOROCKI, Piotr KAMIŃSKI, Krzysztof WINCZA, Sławomir GRUSZCZYŃSKI // IEEE Microwave and Wireless Components Letters ; ISSN 1531-1309. — 2014 vol. 24 no. 4, s. 236–238. — Bibliogr. s. 238, Abstr.. — tekst: http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=6712927

Reduced-length two-section directional couplers designed as coupled-line sections connected with the use of uncoupled lines / Kamil STASZEK, Piotr KAMIŃSKI, Krzysztof WINCZA, Sławomir GRUSZCZYŃSKI // IEEE Microwave and Wireless Components Letters ; ISSN 1531-1309. — 2014 vol. 24 no. 6, s. 376–378. — Bibliogr. s. 378, Abstr.. — tekst: http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=6784330

Switched-beam antenna array with broadside beam fed by modified Butler matrix for radar receiver application / Piotr KAMIŃSKI, Krzysztof WINCZA, Sławomir GRUSZCZYŃSKI // Microwave and Optical Technology Letters ; ISSN 0895-2477. — 2014 vol. 56 no. 3, s. 732–735. — Bibliogr. s. 735, Abstr.. — tekst: https://onlinelibrary-1wiley-1com-1r3ntz4td019f.wbg2.bg.agh.edu.pl/doi/epdf/10.1002/mop.28131