Beamforming networks for multiple beam antennas are believed to be in the vanguard of
technological developments in mmWave for 5G wireless applications. The basic idea of …

The present work is devoted to the miniaturization of a conventional three branch line
coupler device in UHF band. The procedure for designing miniature structures based on …

To miniaturize directional couplers, the replacement of their quarter-wave sections with
electrodynamic structures with equivalent characteristics at smaller physical dimensions is …

Based on the study of miniaturization of the coupler, the advantages of using slots to create
conditions for additional miniaturization of the structure are considered. In this paper, we …

The paper proposes and investigates the topology of a phase shifter based on a directional
coupler. The dimensions of such a device are reduced by using artificial transmission lines …

The article describes the basic information on the miniaturization of the in-phase antiphase
coupler. A description of the process of downsizing due to the use of artificial transmission …

The article defines the design process of a compact coupler used in the microwave
technology as a power divider or adder. It is shown that replacing quarter-wave cuts with …

This paper introduces an innovative dual-band Butler matrix (BM) characterized by
compactness and an enhanced frequency ratio (K). The design employs meandered lines …

This paper describes the analysis of a compact branch-line coupler design. The miniature
structure is obtained by substituting the quarter-wave sections with equivalent circuits …

This work is devoted to the development of a miniature directional coupler with a wide
passband for maritime communications equipment. Artificial transmission lines having …