Single-layer, wideband, and low-loss corporate-feed networks for slot antenna arrays are
described. The antenna is built using ridge gap waveguide technology, formed between two …

A wideband 2× 2-slot element for a 60-GHz antenna array is designed by making use of two
double-sided printed circuit boards (PCBs). The upper PCB contains the four radiating cavity …

This paper presents the design of microstrip-ridge gap waveguide using via-holes in printed
circuit boards, a solution for high-frequency circuits. The study includes how to define the …

Recently, gap waveguides have been shown as a potential alternative to convenational
waveguides in the millimeter-wave band. Until now, groove gap waveguide (GGW) has …

A new kind of contactless electromagnetic bandgap (EBG) structure in the form of interdigital-
pin bed of nails is introduced for the first time in this paper. It consists of two metal plates with …

Ridge air-gapped waveguide and groove air-gapped waveguide are the most commonly
used air-gapped waveguides. In this work, a full air-gapped waveguide (FGW) is first …

This paper presents a comprehensive study of a groove gap waveguide (also known as a
waffle-iron) bandpass filter at Ka-band (26.5-40 GHz), fabricated using a high resolution …

This letter reports the concept, design, fabrication, and characterization of a novel 64-
element, slot-based and substrate-integrated coaxial line (SICL)-fed dual-polarized antenna …

Recently, ridge gap waveguides are considered as guiding structures in high-frequency
applications. One of the major problems facing this guiding structure is the limited ability of …

In this article, a high-isolation power divider with ultrawideband characteristics for
simultaneous operation in two adjacent bands is proposed. The power divider is developed …