Aims. In March 2008, the APEX facility instrument was installed on the telescope at the site
of Lliano Chajnantor in northern Chile. The main objective of the paper is to introduce the …

For terahertz systems, rectangular waveguide is an ideal low loss medium for
interconnectivity and the construction of passive circuits. A drawback when manufacturing …

A silicon deep reactive-ion etching (DRIE) process has been developed, using multiple SiO
2 masks to enable multidepth waveguide features with±2% tolerance. The unique capability …

In this paper, we report about the development, fabrication, and characterization of a
balanced waveguide hot electron bolometer (HEB) receiver for the Atacama Pathfinder …

It is difficult to package and interconnect components and devices at millimeter-waves (mm-
waves) due to excessive losses experiences at these frequencies using traditional …

Frequency-domain solvers are used extensively for modeling arbitrary metal-based
terahertz structures. Four well-known commercially available electromagnetic (EM) …

A novel technology for the manufacturing of micromachined all-metal waveguide circuits and
structures for frequency bands ranging from 200 up to 7000 GHz (sub-millimetre and THz) is …

The intermediate frequency (IF) characteristics, the frequency dependent IF impedance, and
the mixer conversion gain of a small area Hot Electron Bolometer (HEB) have been …

We present results for the successful fabrication of low-loss THz metallic waveguide
components using direct machining with a CNC end mill. The approach uses a split-block …

APEX, the Atacama Pathfinder Experiment, is collaboration between Max Planck Institut fur
Radioastronomie (MPIfR) with Astronomisches Institut Ruhr Universitat Bochum, Onsala …