Abstract Design optimization of passive microwave components is an intricate process,
especially if the primary objective is a reduction of the physical size of the structure. The …

Small size has become a crucial prerequisite in the design of modern microwave
components. Miniaturized devices are essential for a number of application areas, including …

Accurate performance evaluation of microwave components can be carried out using full‐
wave electromagnetic (EM) simulation tools, routinely employed for circuit verification but …

This article presents our study on a wideband miniaturized Butler matrix (BM) beamforming
network based on a stacked metallic waveguide layout in millimeter-wave band. The size …

A complementary split-ring resonator (CSRR)-loaded substrate-integrated waveguide (SIW)
phase shifter and its application to a six-port junction is presented and demonstrated in this …

This letter proposes a miniaturized wideband Butler matrix (BM) based on dual-layer half-
mode substrate integrated waveguide (HMSIW) structure. By virtue of the excellent features …

This manuscript shows a novel compact branch-line coupler with radial stubs installed on
each branch. The proposed implementation is only 10 mm by 10 mm and it achieved a size …

The employment of numerical optimization techniques for parameter tuning of microwave
components has nowadays become a commonplace. In pursuit of reliability, it is most often …

In this article, an integrated substrate groove gap waveguide (Integrated‐SGGW) is
proposed, which is composed of gap and groove layer in printed circuit board technology …

In this paper, a directional coupler is designed using the substrate integrated waveguide
(SIW) method. The SIW coupler consists of a double‐layer with transverse rectangular slots …