Mathias Fredrixon

Senior Research Engineer at GARD Technology

Mathias is involved in the development of receivers for radio astronomy mainly for the telescopes at Onsala, the ALMA telescope and the APEX telescope.In the GARD group, Mathias is responsible for the development of CAD models, drawings and contacts with mechanical workshops.Mathias first assignment at Chalmers was development and tests for the Space Telescope ODIN that was launched 2001.The work at GARD involves everything from programming, measurements in the lab and installing receivers at 5100 meters over sea level in the Chilean mountains in South America.

Source: chalmers.se
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Showing 28 publications

2020

Wideband 67-116 GHz receiver development for ALMA Band 2

P. Yagoubov, T. Mroczkowski, Victor Belitsky et al
Astronomy and Astrophysics. Vol. 634
Journal article
2019

A 1mM SIS receiver utilizing different intermediate frequency (IF) configurations

Denis Meledin, Vincent Desmaris, Erik Sundin et al
ISSTT 2019 - 30th International Symposium on Space Terahertz Technology, Proceedings Book, p. 164-167
Paper in proceedings
2018

ALMA Band 5 receiver cartridge: Design, performance, and commissioning

Victor Belitsky, Maria Bylund, Vincent Desmaris et al
Astronomy and Astrophysics. Vol. 611
Journal article
2018

SEPIA - A new single pixel receiver at the APEX telescope

Victor Belitsky, Igor Lapkin, Mathias Fredrixon et al
Astronomy and Astrophysics. Vol. 612
Journal article
2016

Broken-step Phenomenon in SIS Mixers

Andrey Ermakov, Victor Belitsky, Parisa Yadranjee Aghdam et al
27th International Symposium on Space Terahertz Technology, ISSTT 2016, Nanjing, China
Paper in proceedings
2015

A new 3 mm band receiver for the Onsala 20 m antenna

Victor Belitsky, Igor Lapkin, Mathias Fredrixon et al
Astronomy and Astrophysics. Vol. 580
Journal article
2014

Dual Band MM-Wave Receiver for Onsala 20 m Antenna

Igor Lapkin, Mathias Fredrixon, Erik Sundin et al
Proceedings of the TWENTY-FIFTH INTERNATIONAL SYMPOSIUM ON SPACE TERAHERTZ TECHNOLOGY, April 27-30, 2014, Moscow, Russia, p. 132-
Paper in proceedings
2012

Performance of the First ALMA Band 5 Production Cartridge

Bhushan Billade, Olle Nyström, Denis Meledin et al
IEEE Transactions on Terahertz Science and Technology. Vol. 2 (2), p. 208-214
Journal article
2011

Performance of the first ALMA Band 5 production cartridge

Bhushan Billade, Olle Nyström, Denis Meledin et al
Proceedings of the 22nd International Symposium on Space Terahertz Technology, April 26-28th, 2011 - Tucson, Arizona, USA, p. 56-56
Paper in proceedings
2010

ALMA band 5 cartridge performance

Bhushan Billade, Igor Lapkin, Olle Nyström et al
21st International Symposium on Space Terahertz Technology 2010, ISSTT 2010; Oxford; United Kingdom; 23 March 2010 through 25 March 2010, p. 112-
Paper in proceedings
2010

Design and performance of ALMA band 5 receiver cartridge

Victor Belitsky, Bhushan Billade, Vincent Desmaris et al
35th International Conference on Infrared Millimeter and Terahertz Waves (IRMMW-THz), 2010, p. 1-2
Paper in proceedings
2010

Design and Performance of ALMA Band 5 Receiver Components

Bhushan Billade, Igor Lapkin, Olle Nyström et al
Osservatorio Astronomico di Roma
Conference poster
2010

Advanced Technologies for Radio Astronomy Instrumentation

Victor Belitsky, Bhushan Billade, Vincent Desmaris et al
Osservatorio Astronomico di Roma
Conference poster
2010

Integrated Setup for THz Receiver Characterization

Olle Nyström, Hawal Marouf Rashid, Bhushan Billade et al
21st International Symposium on Space Terahertz Technology 2010, ISSTT 2010; Oxford; United Kingdom; 23 March 2010 through 25 March 2010, p. P6-4
Paper in proceedings
2009

Prototype ALMA Band 5 Cartridge:Design and Performance

Victor Belitsky, Igor Lapkin, Bhushan Billade et al
Proceedings of the 20TH INTERNATIONAL SYMPOSIUM ON SPACE TERAHERTZ TECHNOLOGY, Charlottesville, VA, USA, April 20-22, 2009, s. 2-5
Paper in proceedings
2009

Terahertz Instrumentation For Radio Astronomy

Victor Belitsky, Bhushan Billade, Vincent Desmaris et al
International Symposium on Terahertz Science and Technology between Japan and Sweden, p. 28-29
Conference contribution
2009

Optics Design and Verificatgion for the APEX Swedish Heterodyne Facility Instrument (SHeFI)

Olle Nyström, Igor Lapkin, Vincent Desmaris et al
Journal of Infrared, Millimeter, and Terahertz Waves. Vol. 30 (7), p. 746-761
Journal article
2009

A 1.3-THz Balanced Waveguide HEB Mixer for the APEX Telescope

Denis Meledin, Alexey Pavolotskiy, Vincent Desmaris et al
IEEE Transactions on Microwave Theory and Techniques. Vol. 57 (1), p. 89-98
Journal article
2008

A Swedish heterodyne facility instrument for the APEX telescope

Vessen Vassilev, Denis Meledin, Igor Lapkin et al
Astronomy and Astrophysics. Vol. 490 (3), p. 1157-1163
Journal article
2008

Optics Design and Verification for the APEX Swedish Heterodyne Facility Instrument (SHeFI)

Igor Lapkin, Olle Nyström, Vincent Desmaris et al
In Proceedings of The 19th International Symposium on Space Terahertz Technology, Groningen, 28-30 April, 2008, ed. W. Wild, Space Research Organization of the Netherlands (SRON). Vol. Part I, p. 351-357
Paper in proceedings
2008

APEX Band T2: A 1.25 – 1.39 THz Waveguide Balanced HEB Receiver

Denis Meledin, Vincent Desmaris, Sven-Erik Ferm et al
Proceedings of The 19th International Symposium on Space Terahertz Technology, Groningen, 28-30 April, 2008, ed. W. Wild, Space Research Organization of the Netherlands (SRON). Vol. part I, p. 162-166
Paper in proceedings
2007

Facility Heterodyne Receiver for the Atacama Pathfinder Experiment Telescope

Victor Belitsky, Igor Lapkin, Vessen Vassilev et al
Proceedings of Joint 32nd International Conference on Infrared Millimeter Waves and 15th International conference on Terahertz Electronics, Sept 3-7, 2007, City Hall, Cardiff, Wales, UK, p. 326-328
Paper in proceedings
2007

Molecular oxygen in the p Ophiuchi cloud

B. Larsson, René Liseau, L. Pagani et al
Astronomy & Astrophysics. Vol. 466, p. 999-1003
Journal article
2006

A 279-381 GHz SIS Receiver for the APEX Telescope

C. Risacher, Victor Belitsky, Igor Lapkin et al
Proceedings of the 16th International Symposium on Space Terahertz Technology, Chalmers University of Technology, Gothenburg, Sweden, May 2-4, 2005, p. 432-437
Conference contribution
2006

A 0.8 mm heterodyne facility receiver for the APEX telescope

Christophe Risacher, Vessen Vassilev, Raquel Monje et al
Astronomy & Astrophysics. Vol. 454, p. L17-L20
Journal article
2004

A Gaussian Beam Measurement Range for mm and Sub-mm Receivers

Miroslav Pantaleev, Victor Belitsky, Karsten Ermisch et al
in “Proceedings of Fifteenth International Symposium on Space Terahertz Technology” Massachusetts, USA, p. www.stt.2004.org/-
Conference contribution
2004

Measurement Results of Gaussian Beam Verification for HIFI Instrument of Herschel Space Observatory

Miroslav Pantaleev, Karsten Ermisch, Mathias Fredrixon et al
in “Proceedings of SPIE in Modeling and Systems Engineering for Astronomy”. Vol. 5497, p. 586-595
Paper in proceedings
2003

The Odin satellite - I. Radiometer design and test

U. Frisk, MAGNE HAGSTRÖM, J. Ala-Laurinaho et al
Astronomy and Astrophysics. Vol. 402 (3), p. L27-L34
Journal article

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