Reduced-length tandem directional couplers designed in microstrip technique for use in balanced amplifiers

• DOI: 10.23919/mikon54314.2022.9924717
• Publication Date: 2022-12-07T20:46:10Z
• Authors: Robert Smolarz; Kamil Staszek; Krzysztof Wincza; Slawomir Gruszczy...
• Keywords: Tandem

In this paper, a tandem connection of hybrid couplers realized in microstrip technique is presented. The proposed structure designed as two coupled-line sections having different electrical lengths and the same value coupling coefficient. Such approach can be used to reduce overall size component, what more attractive comparison classic topology. Furthermore, verify possibility implementation conjunction with active devices, directional coupler implemented balanced amplifiers utilized PCB MMIC technologies operating at 1 GHz 20 GHz, respectively.