The Band3 ALMA front end receiver incorporates sideband-separating (2SB) superconductor-insulator-superconductor (SIS) RF hybrid assemblies to achieve low noise temperatures. The 2SB RF hybrid assembly consists of a feedhorn to direct the RF signals, RF and IF quadrature hybrids for separating the USB and LSB signals, and two SIS mixers to down convert the 100 GHz RF signals to 4-8 GHz IF signals. These assemblies require careful matching of the phase and amplitude of the signals in the USB and LSB pathways to minimize receiver noise. The individual components undergo careful characterization and tests to build suitable 2SB RF hybrids assemblies.
Design and characterization of sideband-separating SIS mixer RF hybrids for the Band 3 receiver (84-116 GHz)
01.01.2005
1747127 byte
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
P1_20 Sideband-Separating SIS Mixer at W-band
British Library Conference Proceedings | 2003
|WA1-3 Design and Characterization of Two Sideband SIS Mixer RF Hybrids for the ALMA Band 3 Receiver
British Library Conference Proceedings | 2005
|WB2-2 Waveguide Sideband Separating SIS mixer at 650 GHz
British Library Conference Proceedings | 2005
|A Low Noise 100 GHz Sideband-Separating Receiver
British Library Online Contents | 2004
|British Library Online Contents | 2004
|