Group for Advanced Receiver Development (GARD)

Radio & Space Science Department
Chalmers University of Technology
Gothenburg, Sweden

Group for Advanced Receiver Development (GARD) is an instrumentation group of Onsala Space Observatory (OSO) and has two locations: at Chalmers University Campus in Gothenburg city, and at OSO.  GARD is located in the house of Chalmers Microtecnology Centre (MC2).  The Onsala Space Observatory is situated about 30 miles south from Gothenburg, and is the Swedish National Facility for Radio Astronomy. The Onsala Space Observatory is part of the Department of Earth and Space Sciences, Chalmers University of Technology, (CTH).

GARD responsibility

OSO 20 m antenna

OSO 25 m antenna


Staff (frontend, backend, microwaves, electronics):

Group at CTH, Göteborg: frontend, optics, cryogenics, cold IF*, cryogenics.
Group at OSO: warm/cold IF, backend, electronics, cooling machines, maintenance.




Aghdam, Parisa

Göteborg, CTH

Post graduate student

Belitsky, Victor

Göteborg, CTH

Head of GARD

Billade, Bhushan

Göteborg, CTH

Post graduate student, Tech Lic

Desmaris, Vincent

Göteborg, CTH

PhD, APEX Project

Ferm, Sven-Erik

Göteborg, CTH

Technician, our best fine mechanic guy

Fredrixon, Mathias

Göteborg, CTH

Research Engineer, ALMA Band 5

Lapkin, Igor

Göteborg, CTH

Research Engineer

Meledin, Denis

Göteborg, CTH

PhD, Research engineer, APEX Project

Pavolotsky, Alexey

Göteborg, CTH

PhD, Senior Research Engineer, ALMA Band 5 Manager

Rashid, Hawal

Göteborg, CTH

PhD student, OSO NGReceiver

Sundin, Erik

Göteborg, CTH

Research Engineer, Tech Lic, ALMA Band 5

Strandberg, Magnus

Göteborg, CTH

Research Engineer, Tech Líc, ALMA Band 5

Whale, Mark

Göteborg, CTH

Dr, Swedish Balloon Microwave Radiometer

† Names are in alphabetic order

Friends of GARD

Disclaimer: Please note that the links below lead to the abandoned web-pages.  GARD do
not provide contact information to former employees.


Risacher, Christophe

SOFIA Project


Robles, Victor Perez


Now back home in Mexico

Vassilev, Vessen

MC2, Chalmers

Microwave Laboratory

Monje, Raquel

Caltech, CA

Post Doc

Henke, Doug

Victoria, Canada

Research Associate

Dochev, Dimitar


Consultancy company

Johnsen, Gert


Consultancy company

Hansen-Torvaldsson, Monica



Nyström, Olle

Göteborg, CTH

Post graduate student, ALMA Band 5

Service (for internal use):

PRIMULA & Tur/Retur & Faktureportalen

For Students

Thesis Work within GARD  ‑  currently no actual announcements, but contact us if you are interested in THz technology

Course ``MM and SubMM (THz) Receiver Technology for Instrumentation'',  RRY070, Sp3, 2011 can be found  here


GARD Technologies

Poster displaying GARD developments in Terahertz (MM and SubMM) technologies

GARD Projects:

Atacama Pathfinder EXperiment (APEX)

(Joint Project by European Southern Observatory, Max Plank Institute for Radio Astronomy, Bonn  and Onsala Space Observatory).

Atacama Large Millimeter Array (ALMA) Band 5

ALMA Band 5 is European Commission FP6 funded infrastructure project.  The project aims developing components, design and built a prototype receiver cartridge to comply with specifications of ALMA Band 5.  After that, six ALMA Band 5 receiver cartridges should be built.  More information on ALMA could be found at the official project web-page ,

Current status of the project: PDR passed in March 2008, prototype cartridge is ready during Spring 2009.  Extensive PDR documentation to the ALMA Band 5 Project could be found on ALMA documentation server.  For more details please visit dedicated ALMA Band 5 Project page.

Interface structure study of Nb/Al-AlOx/Nb superconductive tunnel junctions

Collaborative Project with Surface Analysis Laboratory, Moscow Power Engineering Institute

Old GARD projects

Herchel HIFI, Odin, ALMA site testing, etc.: Old projects



     Alexey B. Pavolotsky, Dimitar Dochev, and Victor Belitsky, “Aging- and annealing-induced variations in Nb/Al–AlO x /Nb tunnel junction properties”, American Institute of Physics, J. of Applied Physics, 109, 024502 2011 (doi: 10.1063/1.3532040).

     Dimitar Dochev, Vincent Desmaris, Denis Meledin, Alexey Pavolotsky, Victor Belitsky, “A Technology Demonstrator for 1.6–2.0 THz Waveguide HEB Receiver with a Novel Mixer Layout”, Int. Journal of Infrared, Millimeter and Terahertz Waves, vol. 32, No. 4, pp 451-465, April 2011. (doi: 10.1007/s10762-011-9774-9).


Linked docs and complete List (up to 2011)

Collaboration with:

·       Department of Microtechnology and NanoScience, Chalmers University of Technology, Göteborg.

·       Space Research Organization of the Netherlands (SRON), Groningen, The Netherlands.

·       Institute of Applied Physics (IAP), Russian Academy of Sciences, N. Novgorod, Russia.

·       GARD is a member of AMSTAR RadioNet FP6 and AMSTAR+ RadioNet FP7

Job Opportunities within GARD:

Please contact Victor Belitsky or Professor Hans Olofsson.

Contact & Address:

Postal Address (Group in Gothenburg):

Chalmers University of Technology
SE-412 96 Göteborg

Visiting/Delivery Address:

Kemivägen 9, Chalmers Tekniska Högskola
Tel: 46 31 7721000 (via CTH switching board)
FAX: 46 31 7721801

Inside Sweden please use 031 as area code

Map to find GARD and campus map for printing

OSO Group Address

Information for visitors:

Please, find a popular web-page of the Onsala Space Observatory here.
Chalmers University Campus map.
Travel / tourist information about Gothenburg city, useful information about Sweden, if you want to settle in Gothenburg area.

Site maintained by Magnus Strandberg