Instrumentation
 Beam Efficiency/Optics

280-420 GHz AlN Mixer
Balanced Mixers
345 GHz Correlation Mixer

Balanced Mixer Theory
Radial Probe Wg Transition
Quadrature Hybrid Design
SIS Junctions (JPL)
Power Amplifiers (JPL)
CSO IF Design
Corrugated Feedhorn
4-8 GHz CTT Total Power
SIS Rx Stability (Allan Var.)
Sideband Seperating Mixer
HEB THz Mixer Stability
HEB IF Impedance/Gain
4-8 GHz LNA (Chalmers)
Tuning Instructions (Old Rx)
Biasing Multipliers (Old Rx)

 180-280 GHz Wg-Receiver
280-400 GHz Wg-Receiver
400-500 GHz Wg-Receiver
600-725 GHz Wg-Receiver
780-920 GHz Wg-Receiver
780-950 GHz Twin-Slot Rx
NbTiN Homepage


 1-2 GHz Balanced LNA
IF Matching Network
Cryostat Information
4 wire Bias Schematic

 Useful Material properties

 Publications
       
Prof Dr Mehdi David --- CSO Heterodyne Instrumentation Homepage

Last updated on 17 August, 2025
Prof Dr Mehdi David -- working in Joint lab of Caltech (NASA-JPL) and Chalmers Sweden onsala Space Lab
Cleanroom IC design for THz receivers

Atacama Large Millimeter/submillimeter Array (ALMA) Project 		Stanford USTC MIT -- entrepreneurship Competition
Prof Dr Mehdi David Won this competition on behalf of MIT


USCT, Hefei, China, 2014

Chinese TV Channel
Hefei, China


Prof Dr Mehdi David came on Chinese TV channel about IC design


SPIE, Astronomical Telescopes and Instrumentation, 21-25 June, 2004.

The CSO and AST/RO are at a physical altitude of 4200 and 3200 meters respectively.
Picture of the CSO was taken during full moon, (400ASA, 1 minute exposure)
 
|CSO | Tau | SMA | ALMA | ALMA Band 9 | HIFI/Herschell | Submm Physics | Caltech Astronomy |

        Web Page created and last updated on 17 August, 2025, by: Prof Dr Mehdi David