Broadband Equal-Split Directional Couplers Composed of Cascade- and Tandem-Connected Coupled-Line Sections Having Unequal Lengths. - Kinga Gawel; Magda Kalawska; Kamil Staszek; Robert Smolarz; Slawomir Gruszczynski; Krzysztof Wincza (IEEE Access, 2021)

Four-Node Antenna Feeding Network for Interfacing With Differential Front-End Electronics. - Ilona Piekarz; Jakub Sorocki; Robert Smolarz; Slawomir Gruszczynski; Krzysztof Wincza (IEEE Access, 2021)

Multisection Ultra-Broadband Directional Coupler Designed in MMIC Technology. - Robert Smolarz; Slawomir Gruszczynski; Krzysztof Wincza (IEEE Access, 2021)

A 24 GHz Microwave Sensor With Built-in Calibration Capability Designed in MMIC Technology. - Robert Smolarz; Kamil Staszek; Krzysztof Wincza; Slawomir Gruszczynski (IEEE Access, 2021)

Broadband Monolithic GaN Balanced Amplifier Composed of Mixed Cascade-Tandem Directional Couplers and Cascode Stages. - Robert Smolarz; Kamil Staszek; Slawomir Gruszczynski; Krzysztof Wincza (IEEE Access, 2023)

Impedance-Transforming Transdirectional Coupled-Line Directional Couplers With Maximum Achievable Transformation Ratio. - Krzysztof Wincza; Kamil Staszek; Robert Smolarz; Slawomir Gruszczynski (IEEE Access, 2024)