In this paper, a compact branch microstrip coupler with the simple structure using T-shaped
resonators and open-ended stubs at 1.8 GHz is designed and fabricated. The proposed …

In this paper, a novel branch-line coupler using meandered line compact microstrip resonant
cell (MLCMRC) and bended lines is proposed. The presented coupler works at 0.9 GHz …

This work presents a 28-GHz Butler matrix based switched-beam antenna for fifth-
generation (5G) wireless applications. It integrates a 1× 4 microstrip antenna, a 4× 4 Butler …

The tunability in phase characteristics becomes more and more important in the modern
wireless communication system. However, the existing phase tunable coupler structures …

This paper presents a novel design of a wideband highly-selective bandpass filtering branch-
line coupler (FBLC). By integrating a coupled microstrip line, and an open-ended stub at …

In this brief, for the first time, a novel wideband coupled-line filtering coupler for arbitrary high
power-division ratios is proposed. By utilizing three different types of λ/4 coupled-line …

A branch-line hybrid (BH) topology is suggested, consisting of four equal lengths of
transmission-line sections (TLs) with two different characteristic impedances and four …

In this paper, a new coupler is designed using proposed resonator cell and meandered
lines. The proposed coupler correctly works at 1 GHz operating frequency. The compact size …

In this paper, new 3 dB/10 dB filtering couplers using branch line loading, multi-line hybrid
coupling, and electromagnetic coupling, which are based on self-packaged suspended …

In this paper, we propose an optimization-driven framework for the design of wideband multi-
section branch-lines that exhibit varying branch impedances. Even-odd mode analysis is …