In recent years, the hybrid branch‐line coupler has attracted much attention due to its
appealing features such as of low cost and ease in fabrication for wireless communications …

Radio astronomy is a subfield of astronomy that explores the universe via radio signals up to
a few terahertz. Since the first detection of radio signals from the Milky Way by Karl G. Jansky …

Terahertz technology is a hotspot in the current academic research. In this study, a 400 GHz
broadband multi‐branch waveguide hybrid coupler is designed, but it is very difficult to …

This paper presents a mechanical reliability study of 3-dB waveguide hybrid couplers in
submillimeter and terahertz bands. To show the necessity of improving the mechanical …

This paper presents a 324-element 2-D broadside array for radio astronomy instrumentation
which is sensitive to two mutually orthogonal polarizations. The array is composed of …

We present a design and synthesis procedure for a new 90° waveguide hybrid with ultra-low
amplitude imbalance. This novel hybrid design is based on Reed's multiple branch …

A bandwidth optimization model for a novel equivalent 90° transmission-line section is
proposed in this paper. Furthermore, the structure of 3-D compact 3-dB branch-line …

This paper presents the design, fabrication and testing of two cryogenic 90° hybrid couplers
operating at Ka and Ku bands. The hybrid couplers use a CPW based tandem coupled line …

The major mm and sub-mm radio-astronomy observatories are prioritizing instantaneous
bandwidth widening for their current or planned upgrades this decade. We present an ultra …

We present the design and results of characterization of a new sideband separating (2SB)
mixer for 800-950 GHz, based on superconductor-insulator-superconductor (SIS) junctions …