Design and Characterization of a 211-275 GHz Sideband Separating Mixer for the APEX Telescope
Journal article, 2008

We present the final results of the development and characterization of the sideband separating superconductor-insulator-superconductor (SIS) mixer for the APEX telescope band 1 (211-275 GHz). The sideband separation is achieved by using a quadrature scheme where the RF and a local oscillator (LO) power are applied to two identical double sideband SIS mixers. All mixer components, including the LO and RF distribution circuitry, are integrated into a single mixer block. To achieve a compact design we developed a superconducting Lange coupler, based on Nb thin film, which is used as an IF hybrid. Typical single sideband noise temperature of 100˚K and sideband rejection ratio of about 12 dB and are measured.

SIS mixer

sideband separating mixers

quadrature hybrid

Author

Vessen Vassilev

Chalmers, Department of Radio and Space Science, Advanced Receiver Development

Doug Henke

Chalmers, Department of Radio and Space Science, Advanced Receiver Development

Igor Lapkin

Chalmers, Department of Radio and Space Science, Advanced Receiver Development

Olle Nyström

Chalmers, Department of Radio and Space Science, Advanced Receiver Development

Raquel Monje

Chalmers, Department of Radio and Space Science, Advanced Receiver Development

Alexey Pavolotskiy

Chalmers, Department of Radio and Space Science, Advanced Receiver Development

Victor Belitsky

Chalmers, Department of Radio and Space Science, Advanced Receiver Development

IEEE Microwave and Wireless Components Letters

1531-1309 (ISSN)

Vol. 18 1 58 - 60

Subject Categories

Astronomy, Astrophysics and Cosmology

Other Electrical Engineering, Electronic Engineering, Information Engineering

DOI

10.1109/LMWC.2007.912026

More information

Latest update

11/5/2018